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50 results about "Hydrographic survey" patented technology
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Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore oil exploration/offshore oil drilling and related activities. Strong emphasis is placed on soundings, shorelines, tides, currents, seabed and submerged obstructions that relate to the previously mentioned activities. The term hydrography is used synonymously to describe maritime cartography, which in the final stages of the hydrographic process uses the raw data collected through hydrographic survey into information usable by the end user.
Method for generating electronic channel chart based on Changjiang River standards
InactiveCN102095425AEnsure safetyEnsure integrityInstruments for road network navigationInformation processingSource Data Verification
The invention discloses a method for generating an electronic channel chart based on the Changjiang River standards, which is mainly based on the digital channel measurement data transmission standard of the Changjiang River, the digital channel measurement data verification standard of the Changjiang River and the electronic sea chart data protection scheme recommended by IHO (International Hydrography Organization), sets up a standardized electronic channel chart database of the Changjiang River by utilizing advanced computer network technology, data communication technology and geographic information processing technology, realizes the measurement and the management for channels over the Changjiang River, the generation of the electronic channel chart and the automation, integration and networking of the entire release process by means of the generation flow including data acquisition, data processing, editing of the channel chart, checking of the channel chart, release of the channel chart and application of the channel chart, and provide, in the form of browser, the latest electronic channel chart service for ships sailing on the Changjiang River, shipping related departmentsand enterprises and public institutions in time. The method has the obvious advantages of normative data format, complete data updating mechanism, mature business system, safe information protection mechanism, great advantage in popularization and the like.
Owner:长江南京航道局 +2
Portable multi-beam depth sounder
InactiveCN101000241ASolve the problem of water depth data (21)Improve measurement efficiencyElectric signal transmission systemsOpen water surveyMass storageOcean bottom
The invention relates to portable type multi-beam depth sounder. It includes above water control processing extension, receive-dispatch combining transducer array, receive-dispatch switching circuit. The above water control processing extension is made up of industrial personal computer, programmable signal source, signal emitting, adjusting, collecting, and processing systems, display, and mass storage. The invention uses multi channel transducer array and pre-forming multi wave packet technique to gain multipoint depth water data for once measure to increase measuring accuracy and working efficiency. And the transducer is hung at the side of the ship which is portable and convenient for installing. Thus the invention can be widely used in underwater topographic survey for shallow sea and inland lake and river, ocean engineering, reservoir survey etc.
Owner:HARBIN ENG UNIV
Apparatus and method for the mounting, deployment and use of hydrographic surveying devices
InactiveUS20020067662A1Promote sportsTransducer detailsSound producing devicesVertical planeDrive shaft
A vessel of generally conventional design is provided with a hydrographic survey apparatus in which the transducer of the survey apparatus is mounted on a boom swingable about a substantially horizontal axis between a deployed and stowed position. The boom is located in a slot aligned in a vertical plane along the boat's centerline and extends downward from the boat's top deck. The boom is mounted at one end near the bow of the boat by attachment to a drive shaft extending beam-wise or transversely across the slot. The drive shaft is operated by a hydraulic rotary actuator. The transducer is mounted on the free end of the boom and is swingable about the drive shaft into and out of the water. The transducer is thus selectively movable from a stowed position to a deployed position in front of the vessel where it is placed in still non-turbulent water, i.e.; water that is free from mechanical vibration and noise of the survey boat and aquatic turbulence from the hull.
Owner:CARNEY THOMAS
Hydrographic survey ship measurement cable taking-up and setting-out device
ActiveCN103072672AAvoid damageCompact structureCargo handling apparatusPassenger handling apparatusFrequency conversionEngineering
The invention discloses a hydrographic survey ship measurement cable taking-up and setting-out device, which comprises a hydrographic winch device, a deflecting pulley, a cable taking-up and setting-out crane jib and a cable tensioning device, wherein the hydrographic winch device is arranged on an orlop deck, and comprises a frequency conversion brake motor, a speed reducer and a cable drum; one end of a cable is fixedly arranged on the cable drum; the other end of the cable is led to an outer part of a ship board through the deflecting pulley arranged on a lower side of an upper deck; and the cable taking-up and setting-out crane jib is arranged on one side of the upper deck, which is close to the ship board, and comprises a vertical cradle, a horizontal hanging beam, a foundation support, a folding draw bar, a first pulley, an X-axial direction angle sensor and a horizontal hanging beam taking-up mechanism. The hydrographic survey ship measurement cable taking-up and setting-out device has a compact structure and is convenient to use, the horizontal hanging beam can be quickly set out or stored in the vertical cradle, the X-axial direction angle sensor and a hydrographic survey instrument on ends of the horizontal hanging beam can be prevented from being damaged due to storm attach after the horizontal hanging beam is stored, and the reliability in operation of the device is improved.
Owner:镇江赛尔尼柯自动化股份有限公司
Hydrographic survey device for small water area
The invention discloses a hydrographic survey device for a small water area, characterized by arranging a fixed mechanism at the side of the water area, fixing a suspension support at the opposite side; a guiding steel rope is arranged between the fixed mechanism and the suspension support; a mobile pulley rack is driven to horizontally move by a driving wheel arranged on a driving belt of the fixed mechanism; the end of the rope is provided with a measurement sensor by the pulleys of the mobile pulley rack; and the rope is reeled or unreeled by rotating the rollers on the fixed mechanism to realize the vertical movement of the measurement sensor; a control disc controls a main transmission shaft and a belt wheel transmission shaft to individually or synchronously rotate by a clutch, and drives the measurement sensor to move horizontally at a constant depth underwater to measure the data of different positions of the fixed depth, or drives the measurement sensor to vertically move at a fixed position to measure the data of different depths. The invention has the advantages of simple structure, convenient usage and movement, safety, reliability, and high data acquisition efficiency, and can be suitable for different work environments of small reservoirs or ponds.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Up-down symmetrical and anti-dumping unmanned ship system
The invention relates to the field of unmanned ships, and aims at the problem that the unmanned ship cannot work normally when the hull of the existing hydrographic survey unmanned ship is overturned due to encountering wind and waves or other reasons; The entire hull of the ship is symmetrical up and down, that is, the structure of the upper and lower hulls is symmetrical along the central axis. Two thrusters are placed at the tail to realize the functions of advancing, turning and retreating of the hull. The entire unmanned ship system includes two parts: the remote control and the powered hull. Through the cooperation between the remote control and the powered hull, when the hull rolls over for unknown reasons, it can still work normally, which overcomes the traditional unmanned ship. Disadvantages of not working after overturning.
Owner:天津市创恒机器人技术有限公司
Vertical array system suitable for acoustics hydrographic survey in high latitude extremely cold sea area
ActiveCN107356233ANormal working conditionReduce power consumptionVibration measurement in fluidOpen water surveyEnvironmental noiseEngineering
The invention discloses a vertical array system suitable for acoustics hydrographic survey in a high latitude extremely cold sea area. The vertical array system comprises a plurality of hydrophones, which are serially connected through a high strength cable. Each hydrophone comprises a high sensitivity hydrophone head, which is used to receive marine environmental noises and underwater acoustic communication signals; a signal collecting and conditioning circuit, which is used to collect and condition the high sensitivity hydrophone head; a sensor module, which is used to collect the information of pressure, temperature, dip angle, acceleration speed, and azimuth and comprises a pressure sensor, a dip angle sensor, an acceleration speed sensor, a temperature sensor, and an azimuth sensor; a main controller, which is used to control the data transmission between each module; and a high precision real time clock, which is used to realize crude precision synchronization of all hydrophone nodes. The provided system is not limited by the cable, the electrical equipment in the vertical array can be used in an extremely cold environment, and thus the whole system can be used in deep sea acoustic measurement of seas of North Pole and seas next to North Pole.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI
Resolving directional information in sonar arrays
InactiveUS20070008821A1High resolutionMulti-channel direction findingSound producing devicesSonarHydrophone
The invention concerns the resolution of directional information in sonar arrays. In particular it concerns a method for resolving such directional information, which may be useful in hydrographic surveys. The method comprises the steps of receiving a block of sensor data, containing time series from an array of hydrophone sensors, and beamforming to produce beam data including estimates of the directions of arrival from those beams and estimates of source strength. The method further comprises the steps of selecting a subset of the beams and refining the estimates of the directions of arrival from those beams, and, combining the refined estimates of directions of arrival from those beams with either the sensor data or the beam data, and performing a fit to the sensor data or beam data to develop an output containing refined direction of arrival data and refined source strength data.
Owner:SONARTECH ATLAS
Underwater topographic survey simulation method and simulator thereof
ActiveCN108253934AFacilitates analog measurementsRealize the simulation training functionCosmonautic condition simulationsMeasuring open water depthPrediction algorithmsHydrographic survey
The invention relates to the technical field of marine charting, specifically to an underwater topographic survey simulation method and a simulator thereof. The method comprises the following steps: changing the ship speed and rudder angle of a simulated surveying ship by using a simulated controller of the surveying ship by a user, and calculating and simulating the position of the surveying shipaccording to a position simulation algorithm; sending a GPS positioning signal to an upper computer according to a positioning signal simulation algorithm; generating the depth finder sound wave transmitting direction of a ship posture according to a posture simulation algorithm of the surveying ship; calculating instantaneous tide water level height according to a tide prediction algorithm in the period defined by the user; calculating a measurement result of instantaneous water depth according to a water depth simulation algorithm, and sending the measurement result to the upper computer for installing underwater topographic survey navigation collection software. Under the premise of no wading measurement, the measurement result similar to real water depth measurement is provided for hydrographic sounding navigation collection software. A vivid water depth measurement environment is provided for the user through a simulated underwater topographic survey signal generated by a simulation system.
Owner:PLA DALIAN NAVAL ACADEMY
Bionic tail fin capable of being used for overwater measuring equipment power
InactiveCN106043645ARealize reciprocating swingReduce the totalPropulsive elements of non-rotary typeElectricityDrive shaft
The invention provides a bionic tail fin capable of being used for overwater measuring equipment power. The bionic tail fin is mainly characterized in that transmission shafts in transmission connection with two sliding blocks connected to two guide rails are arranged in a tail fin shell, sliding block movement starting and stopping limiting pieces are arranged at the position, at the two ends of each sliding block, of each guide rail, photocoupling switch devices are arranged at the positions of the sliding block movement starting and stopping limiting pieces of each sliding block, the two ends of each sliding block are provided with light shading boards, one end of each guide rail is provided with an electromagnet, and the electromagnets are connected with an electric controller. The bionic tail fin has the beneficial effects of being environment-friendly, free of pollution, good in silencing effect, simple in structure, low in cost and long in service life, and the propelling efficiency and the energy-saving effect can be effectively improved. The bionic tail fin can be used for a system such as a small hydrographic survey vessel with the relatively high self-restraint time requirement, can also be used as a propelling system for a pure electric propelling ship and further can be used for certain special occasions, such as underwater acoustical signal collection, with the special requirements for the noise of the propelling system.
Owner:HENAN UNIVERSITY
Large ocean sea channel surveying vessel
PendingCN112937779AReasonable layout designVersatileCargo handling apparatusVessels for aircraftMeasurement deviceOcean sea
The invention relates to a large ocean sea channel surveying vessel which carries various high-performance specialized ocean surveying equipment systems, and comprises a manned measurement boat, an unmanned measurement boat, an autonomous unmanned underwater vehicle release and recovery system, a pull-type measurement device, a navigation type multi-element measurement system, a thermohaline depth gauge detector, an underwater fixedly-mounted acoustic device and a measurement winch device. The measurement operation deck area comprises a tail operation area and a broadside operation area, and the multi-point putting and recycling requirements of measurement equipment can be met; the underwater fixedly-mounted acoustic device is mounted at the bottom of the ship in front of 1 / 3 of the length of a midship of the ship through a bow hoisting appendage; a stabilizer adopts a retractable fin stabilizer and a passive controllable anti-rolling tank, and two types of stabilizer equipment are intelligently and automatically controlled through a combined control system; the surveying vessel is further provided with a DP-2-level dynamic positioning system, and the surveying precision, continuity and reliability in the long-period gridding surveying operation and fixed-point surveying operation process in the deep sea and the far sea can be guaranteed.
Owner:708TH RES INST OF CSSC
Novel single-beam detector
InactiveCN104698464AHigh precisionImprove performanceAcoustic wave reradiationExternal storageTransducer
The invention discloses a novel single-beam detector. The detector comprises a transducer, a transmitting device, a receiving device, a micro-controller, a display device, an external storage device, a power conversion device and a data repetition module. The novel single-beam detector provided by the invention has the characteristics of being high in precision, good in performance, high in reliability, convenient to operate and the like, the minimal measurable depth is about 0.15m, and the measuring precision is 0.1%; meanwhile, data input ports and data output ports of various hydrographic survey equipments are arranged at the same time, and a sounding data repetition software is designed, therefore a user can successively analyze and process data on a computer after the sounding data is output. According to the novel single-beam detector provided by the invention, the difficult problems of high-precision hydrographic survey for shallow water can be solved, a platform can be provided for data fusion of various hydrographic survey equipments, and finally the convenience can be provided for the successive processing and analysis requirements of data by a customer.
Owner:SUZHOU SOUNDTECH OCEANIC INSTR
Integral sampling system
The embodiment of the invention provides an integral sampling system, and aims to solve the technical defect that in the prior art, a cable needs to be released down underwater to take samples such as a water sample and a plankton sample or data such as hydrographic survey respectively. According to the technical scheme of the embodiment of the invention, the integral sampling system comprises a pullable cable, a plankton net, a water sampler and a hydrologic detector, wherein the plankton net comprises a netting; a net hole is formed in one end of the netting; a net bottom tube is arranged at the other opposite end; the net hole is connected with the cable through a biological net cable; the water sampler is arranged on the cable; the hydrologic detector is buckled on the net hole through a detector protection rope buckle.
Owner:SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Wireless power supply system for under-deepwater hydrographic survey
InactiveCN102593961AWide range of workDive deepElectromagnetic wave systemCircuit arrangementsMeasurement deviceElectric power system
The invention discloses a wireless power supply system for an under-deepwater hydrographic survey, belonging to an important auxiliary device for carrying out hydrographic gauging operations under a deepwater condition in an outdoor environment. The device is an advanced device which can ensure normal work of an underwater measurement machine by using a portable large-power power source to generate alternating magnetic field effects, and transmitting electromagnetic energy to an underwater hydrographic measurement device through an electromagnetic resonance coil. The wireless power supply system mainly comprises a direct-current power source (1), an oscillating circuit (2), a power thyristor (3), a resonance transmission coil (4), a resonance receiving coil (5), a rectifying circuit (6), a storage battery (7) and a measurement device (8). The wireless power supply system disclosed by the invention can provide electric power for the hydrographic gauging operations under the deepwater condition in the outdoor environment, and has the advantages of wide work range, flexible transmission manner, safety and reliability and the like.
Owner:TIANJIN POLYTECHNIC UNIV
Resolving directional information in sonar arrays
The invention concerns the resolution of directional information in sonar arrays. In particular it concerns a method for resolving such directional information, which may be useful in hydrographic surveys. The method comprises the steps of receiving a block of sensor data, containing time series from an array of hydrophone sensors, and beamforming to produce beam data including estimates of the directions of arrival from those beams and estimates of source strength. The method further comprises the steps of selecting a subset of the beams and refining the estimates of the directions of arrival from those beams, and, combining the refined estimates of directions of arrival from those beams with either the sensor data or the beam data, and performing a fit to the sensor data or beam data to develop an output containing refined direction of arrival data and refined source strength data.
Owner:SONARTECH ATLAS
River hydrographic survey method and device
ActiveCN113219202AGuaranteed accuracySame cross sectionMeasuring open water movementMeasuring open water depthHydrometryRiver routing
The invention discloses a river hydrographic measurement method and device, and the method comprises the following steps: S1, selecting a measurement part on a to-be-measured river; s2, obtaining the shape of the cross section of the measured part; s3, selecting a plurality of measurement points at the measurement part, and recording the positions of the measurement points on the cross section; s4, measuring different measuring points respectively; s5, fitting the measurement result to obtain a hydrological fitting function of the measurement value in the cross section range; and S6, performing integration on the hydrological fitting function in the region of the cross section to obtain corresponding hydrological data. The problems in the prior art can be solved, and the measurement precision of the river flow and the sand content is improved.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Snorkeling type emergency hydrographic survey device
PendingCN114323199AReduce tensionAccurate measurementWaterborne vesselsMachines/enginesStream gaugeHydrometry
The invention provides a snorkeling type emergency hydrographic survey device, which comprises a telescopic rod piece, a fixing device and a measuring device, and is characterized in that the telescopic rod piece comprises a head rod section, a plurality of middle rod sections and a tail rod section which are in sliding fit in sequence; a rotating seat is fixed at the end part of the tail rod section, a winding wheel is fixedly arranged on one side of the tail rod section, and a steel wire is wound on the winding wheel; the measuring device comprises a suspension ball, a flow meter and a radar water level gauge, a steel wire penetrates out of the first rod section and bypasses the first fixed pulley, the other end of the steel wire is connected with a support, a plurality of slings are connected below the support, the suspension ball is connected below the slings, and the flow meter and the radar water level gauge are fixedly arranged below the suspension ball; a fixing device is arranged at one end of the tail rod section. According to the invention, the floating ball is used as a flow measurement carrier, so that the pulling force on the telescopic rod piece is greatly reduced, the manual hydrographic measurement operation difficulty is reduced by using the telescopic rod section, the measurement can be independently completed even if one person is on one side of a river bank, and the hydrographic measurement cost is reduced.
Owner:SHUIWEN WATER RESOURCE INSPECTION BUREAU XUCHANG HENAN +3
Lubricating structure of main cable of hydrometric cableway
InactiveCN106813650ATroubleshoot poor performanceEven lubrication and maintenanceMeasurement apparatus componentsOpen water surveyEngineeringHydrographic survey
The invention relates to a lubricating structure of a main cable of a hydrometric cableway and solves the problem that the lubricating maintenance difficulty of hydrometric cableways bestriding a riverway is great. The device comprises a main cable bestriding the two sides of a riverbank, a triangular rack for mounting a hydrographic survey device is hanged on the main cable, the triangular rack bestrides the main cable through a front road wheel and a back road wheel, a lubricating barrel which moves along the triangular rack is also arranged behind the triangular rack, the main cable penetrates through the lubricating barrel, a brushing roller attached to a main cable brushing lubricant is arranged in the lubricating barrel, rotating sleeves with threads separately sleeve the main cable on the front and back sides of the brushing roller axially, and the rotating sleeves rotate as the main cable twitches. According to the lubricating structure provided by the invention, the main cable of the hydrometric cableway is lubricated and maintained by means of the lubricating barrel travelling along with the triangular rack; by matching the brushing roller with the rotating sleeves, the lubricant is uniformly coated to the surface of the main cable, and the lubricating maintenance effect is good.
Owner:浙江省水文管理中心
Tracking and measuring system for water level in pipeline
PendingCN113324612AUndisturbedIncreased durabilityMachines/enginesLevel indicatorsHydrometryDrive wheel
The invention discloses a system for tracking and measuring a water level in a pipeline, belonging to the technical field of hydrographic survey. According to the invention, a liquid level detector is utilized to replace an existing detection devices for liquid levels in pipelines, avoids winding and knotting between the detection devices and ropes, can avoid interference of obstacles in pipelines, and is hardly affected by environment, high in measurement precision and long in service life. The system comprises: a transmission rope, wherein the tail end of the transmission rope is connected with the liquid level detector; a driving wheel, wherein the front end of the transmission rope is fixedly connected with the driving wheel, the driving wheel is further connected with a power source, and the driving wheel can drive the liquid level detector to operate through the transmission rope according to a set program; a driven wheel, which is used for metering the movement distance of the transmission rope and is synchronously connected with an angular displacement sensor through a transmission mechanism, wherein the transmission rope winds the driven wheel; and a control system, wherein the liquid level detector, the power source and the angular displacement sensor are connected with the control system, and the control system can obtain position information of the liquid level detector and measurement data of the angular displacement sensor and output a power source control signal to control the liquid level detector to conduct automatic monitoring according to a set automatic program.
Owner:山东省海河淮河小清河流域水利管理服务中心 +2
Depth reference frame point laying method for coastal sea area of China
The invention discloses a Chinese coastal sea area depth reference frame point layout method, and belongs to the field of depth reference precision control research. According to the method, on the basis of a nautical chart depth datum plane model, the nonlinear change degree of the nautical chart depth datum plane in different directions is researched by using a second derivative, and the tolerance requirement of the nautical chart depth datum plane model error and a mathematical model of the datum plane maximum interpolable distance in different directions are deduced. According to the method, a tolerance index of datum plane interpolation is given by combining a tolerance index of water depth measurement in Sea Channel Measurement Standards (GB12327-1998), an effective range of datum plane linear interpolation is determined, graphic expression of the effective range is realized, on one hand, research results can provide a theoretical basis for layout of frame points in coastal sea areas in China, and on the other hand, the research results can provide a theoretical basis for layout of frame points in coastal sea areas in China; a means is provided for rationality evaluation of frame point positions; on the other hand, arrangement of a tide station can be assisted, and water level reduction precision is improved.
Owner:PLA DALIAN NAVAL ACADEMY
Sampling supporting and fixing structure for hydrographic survey unmanned ship
PendingCN113955023AFirmly connectedImprove stabilityWaterborne vesselsUnmanned surface vesselsHydrometryStructural engineering
The invention discloses a sampling supporting and fixing structure for a hydrographic survey unmanned ship; the structure comprises two ship bodies, the two ship bodies are oppositely arranged, a driving structure is installed at one end of each ship body, guide rods are symmetrically fixed to the top faces of the ship bodies, supporting structures are installed on the guide rods, and a measuring platform is arranged between the ship bodies. The measuring platform is composed of a damping structure, a first mounting structure and a second mounting structure, the first mounting structure is mounted on one side of the interior of the damping structure, and the second mounting structure is mounted on the other side of the interior of the damping structure. According to the invention, hydrographic survey equipment can be placed in a classified mode according to actual installation requirements, different hydrographic data can be conveniently collected in the later period, meanwhile, the influence of water surface shifting on the hydrographic survey equipment on the hydrographic survey unmanned ship can be filtered and removed, so that using firmness and measurement stability are improved.
Owner:江苏雨能水利工程有限公司
Full-automatic hydrographic survey hanging box
The invention relates to a full-automatic hydrographic survey hanging box which comprises a hanging box body and a travelling crane support. The hanging box body is provided with a base plate and a side frame, a hanging box lifting coiling block driving motor is installed below the base plate, the hanging box lifting coiling block driving motor is in transmission connection with hanging box lifting coiling blocks, the number of the hanging box lifting coiling blocks is four, a lifting hanging rope is connected to each hanging box lifting coiling block and is connected with the travelling cranesupport through guide wheels arranged at the four corners of the hanging box body, and the travelling crane support is used for moving on a suspension cable to drive the hanging box body to move horizontally; and the hanging box body is further provided with an instrument automatic lifting device. By means of the full-automatic hydrographic survey hanging box, automatic measurement can be carriedout on the hydrologic condition without needing a person to stand on the hanging box body.
Owner:ZHENGZHOU XINGRUI WATER CONSERVANCY TECH
Fully automatic hydrographic measurement hanging box
The invention relates to a full-automatic hydrographic survey hanging box which comprises a hanging box body and a travelling crane support. The hanging box body is provided with a base plate and a side frame, a hanging box lifting coiling block driving motor is installed below the base plate, the hanging box lifting coiling block driving motor is in transmission connection with hanging box lifting coiling blocks, the number of the hanging box lifting coiling blocks is four, a lifting hanging rope is connected to each hanging box lifting coiling block and is connected with the travelling cranesupport through guide wheels arranged at the four corners of the hanging box body, and the travelling crane support is used for moving on a suspension cable to drive the hanging box body to move horizontally; and the hanging box body is further provided with an instrument automatic lifting device. By means of the full-automatic hydrographic survey hanging box, automatic measurement can be carriedout on the hydrologic condition without needing a person to stand on the hanging box body.
Owner:黄河水利委员会河南水文水资源局
Underwater acoustic signal detection method based on Rydberg atomic radar
PendingCN114459589ATaking into account large bandwidthTaking into account featuresVibration measurement in fluidElectromagentic field characteristicsUltra-widebandMulti band
The invention discloses an underwater acoustic signal detection method based on a Rydberg atomic radar, and the method comprises the steps: transmitting a microwave signal to a water surface through a multi-frequency-band microwave source, enabling the microwave signal of each frequency band to sense the fluctuation of the water surface and generate a reflection echo, carrying out the primary receiving of the reflection echo of the microwave signal of each frequency band through a Rydberg atomic antenna array, and carrying out the secondary receiving of the reflection echo of the microwave signal of each frequency band; and inverting a water surface fluctuation signal according to the micro-Doppler effect, and fitting a sound induced component through high-pass filtering. The performance of a traditional radar is upgraded through the capability advantages of Rydberg atoms in the aspects of high-sensitivity electromagnetic signal sensing, ultra-wideband multi-band parallel signal detection and the like, so that the requirement for micro-Doppler water surface fluctuation measurement is met; meanwhile, due to the fact that the working frequency of the underwater sound signals is larger than the fluctuation frequency of water surface waves, high-frequency effective information can be extracted from low-frequency strong background noise through a high-pass filter, and a brand-new and feasible underwater sound signal detection means with upgraded performance is provided for underwater exploration, hydrographic survey, diving search and rescue and the like.
Owner:军事科学院系统工程研究院网络信息研究所
A Multi-beam Outlier Data Processing Algorithm Based on Thiessen Polygon Graph
InactiveCN107798339BImprove objectivityImprove robustnessCharacter and pattern recognitionUsing wave/particle radiation meansInformation dispersalAlgorithm
The invention discloses a multi-beam abnormal value data processing algorithm based on a Thiessen polygon graph: construct a Voronoi graph for the seabed measurement area, record the coordinate value of each vertex; obtain effective water depth point distance, take the Voronoi polygon vertex as the origin, effectively The distance of the sounding point is the radius, search for the sounding points within this range; calculate the information propagation model of each sounding point to the Voronoi node; use the median filter to calculate the initial value of the sounding sequence, and control the order in which the sounding points enter the filter; use the dynamic The linear model estimates the depth of the node, and obtains the estimated value of the depth of the node and the uncertainty of the sounding; according to the uncertainty of the sounding, the gross error of the multi-beam sounding measurement is eliminated according to the precision measurement requirements of the IHO hydrographic specification. The Voronoi diagram constructed by the invention can well reflect the real topography of the seabed, make full use of the discrete water depth points measured by the multi-beam, improve the precision of multi-beam data processing, and further improve the refined expression of the seabed topography.
Owner:TIANJIN UNIV
Method for calculating reservoir inflow
ActiveCN113239642AImprove computing powerGuaranteed accuracyClimate change adaptationHydro energy generationHydrometryWater leakage
Owner:DATANG GANSU POWER GENERATION +1
Multifunctional unmanned aerial vehicle for hydrographic survey
PendingCN113955105ARealize measurement workLanding safetyFloatsWithdrawing sample devicesHydrometryCommunications system
The invention relates to a multifunctional unmanned aerial vehicle for hydrographic survey; the multifunctional unmanned aerial vehicle comprises an unmanned aerial vehicle body, the unmanned aerial vehicle body is circular, and a flying device, a floating device and a hydrographic survey device are arranged on the unmanned aerial vehicle body; through the arrangement of a fish lead, the flow velocity and flow direction of water in hydrological monitoring are detected, sampling is carried out, and multifunctional hydrological measurement is achieved; through the arrangement of an air bag, the unmanned aerial vehicle can be prevented from being damaged by water entering the unmanned aerial vehicle after falling into water, and the lead fish can be submerged into the water to realize hydrological measurement operation; landing nails are arranged, so that the unmanned aerial vehicle can be installed under poor weather conditions, and the unmanned aerial vehicle can land safely; and through a wireless communication system of the unmanned aerial vehicle, data acquired by the Doppler probe can be transmitted back and analyzed in real time, so that the working efficiency is improved.
Owner:江苏雨能水利工程有限公司
Simulation Method and Simulator for Underwater Terrain Measurement
ActiveCN108253934BFacilitates analog measurementsRealize the simulation training functionCosmonautic condition simulationsMeasuring open water depthTerrainPrediction algorithms
The invention relates to the technical field of marine charting, specifically to an underwater topographic survey simulation method and a simulator thereof. The method comprises the following steps: changing the ship speed and rudder angle of a simulated surveying ship by using a simulated controller of the surveying ship by a user, and calculating and simulating the position of the surveying shipaccording to a position simulation algorithm; sending a GPS positioning signal to an upper computer according to a positioning signal simulation algorithm; generating the depth finder sound wave transmitting direction of a ship posture according to a posture simulation algorithm of the surveying ship; calculating instantaneous tide water level height according to a tide prediction algorithm in the period defined by the user; calculating a measurement result of instantaneous water depth according to a water depth simulation algorithm, and sending the measurement result to the upper computer for installing underwater topographic survey navigation collection software. Under the premise of no wading measurement, the measurement result similar to real water depth measurement is provided for hydrographic sounding navigation collection software. A vivid water depth measurement environment is provided for the user through a simulated underwater topographic survey signal generated by a simulation system.
Owner:PLA DALIAN NAVAL ACADEMY
A Vertical Array System Suitable for Acoustic Hydrographic Surveying in High Latitude Extremely Cold Sea Areas
ActiveCN107356233BNormal working conditionReduce power consumptionVibration measurement in fluidOpen water surveyEnvironmental noiseEngineering
The invention discloses a vertical array system suitable for acoustics hydrographic survey in a high latitude extremely cold sea area. The vertical array system comprises a plurality of hydrophones, which are serially connected through a high strength cable. Each hydrophone comprises a high sensitivity hydrophone head, which is used to receive marine environmental noises and underwater acoustic communication signals; a signal collecting and conditioning circuit, which is used to collect and condition the high sensitivity hydrophone head; a sensor module, which is used to collect the information of pressure, temperature, dip angle, acceleration speed, and azimuth and comprises a pressure sensor, a dip angle sensor, an acceleration speed sensor, a temperature sensor, and an azimuth sensor; a main controller, which is used to control the data transmission between each module; and a high precision real time clock, which is used to realize crude precision synchronization of all hydrophone nodes. The provided system is not limited by the cable, the electrical equipment in the vertical array can be used in an extremely cold environment, and thus the whole system can be used in deep sea acoustic measurement of seas of North Pole and seas next to North Pole.
Owner:INST OF ACOUSTICS CHINESE ACAD OF SCI
Salinization exploring tube for hydrographic surveying
PendingCN107643545AUniform salinizationEasy to moveElectric/magnetic detection for well-loggingWell loggingEngineering
The invention relates to a salinization exploring tube for hydrographic surveying. The salinization exploring tube comprises a salinization pipe, a flow regulator arranged at the upper end inside thesalinization pipe, a measuring part arranged at the upper end of the salinization pipe in threaded connection, and a connector arranged at the upper end of the measuring part. The salinization pipe isa cylindrical pipe body with an open upper end and a sealed bottom; and through holes are formed in the pipe wall of the salinization pipe uniformly. A long hole is formed in the measuring part; nylon poses are arranged at the two ends of the long hole respectively; and lead electrodes are arranged at the nylon posts respectively. According to the invention, the salinization pipe is arranged forsalinization; the salinization speed is adjusted by using the flow regulator, so that the well liquid salinization of the measuring segment becomes uniform and the detection accuracy is improved; withthe long hole of the measuring part, the well liquid floes between electrodes; and the electrodes and the measuring part are isolated and insulated with each other by the nylon posts, the space around the electrodes is coated with the large-size nylon material being the good insulating material, and the relative distance is small, so that the influence on well liquid measurement after salinization by the wall rock in the well is minimized during well logging.
Owner:中国煤炭地质总局一二九勘探队
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