48 results about "GPS/INS" patented technology

A real-time integrated vehicle positioning method and system with differential GPS can substantially solve the problems encountered in either the global positioning system-only or the inertial navigation system-only, such as loss of global positioning satellite signal, sensitivity to jamming and spoofing, and an inertial solution's drift over time. In the present invention, the velocity and acceleration from an inertial navigation processor of the integrated GPS/INS system are used to aid the code and carrier phase tracking of the global positioning system satellite signals, so as to enhance the performance of the global positioning and inertial integration system, even in heavy jamming and high dynamic environments. To improve the accuracy of the integrated GPS/INS navigation system, phase measurements are used and the idea of the differential GPS is employed. However, integer ambiguities have to be resolved for high accuracy positioning. Therefore, in the present invention a new on-the-fly ambiguity resolution technique is disclosed to resolve double difference integer ambiguities. The real-time fully-coupled GPS/IMU vehicle positioning system includes an IMU (inertial measurement unit), a GPS processor, and a data link which are connected to a central navigation processor to produce a navigation solution that is output to an I/O (input/output) interface.

The present invention relates to a radio frequency identification (RFID) tag installation system using a vehicle and method thereof. The RFID tag is installed on the road to provide a driver with position information and road information such as speed limit, road name. etc in his or her traveling region. By using our present invention, RFID tag can be installed with small manpower in short a time. The system uses two CCD cameras, two GPS receivers, an INS and a DMI, and includes: a vehicle position and yaw extractor by using the two GPS receivers; orientation extractor for the vehicle by using INS, a GPS/INS/DMI integrator for GPS outage and for INS error correction; two cameras interior/exterior orientation extractor for the CCD cameras; a target position extractor for finding 3-dimensional coordinates; a road information storage for supplying road information such as a speed limit and a rout number of a road; an RFID tag writer for inputting the information obtained from the target region position extractor and the road information storage; and an RFID tag installer for attaching the RFID tag on the road.

The invention discloses a tunnel lining defect ground-penetrating radar detection system on the basis of a wall clinging type detection vehicle. The tunnel lining defect ground-penetrating radar detection system comprises the wall clinging type detection vehicle, a GPS/INS (global positioning system/inertial navigation system) combined navigation module, a vehicular communication and transmission module, a movement controller, a ground-penetrating radar module and a ground workstation. The wall clinging type detection vehicle is used for being attached onto tunnel lining surfaces and can move according to set paths; the GPS/INS combined navigation module is used for navigating the detection vehicle; the vehicular communication and transmission module is used for being in two-way communication with the ground workstation, receiving instruction signals of the workstation and transmitting positioning signals and detection signals to the workstation; the detection vehicle can move under the control of the movement controller; the ground-penetrating radar module is used for detecting cavities in lining back surfaces; the ground workstation is used for designing and controlling the navigation paths for the wall clinging type detection vehicle, and detection data transmitted by the detection vehicle can be received, analyzed and displayed by the ground workstation; the GPS/INS combined navigation module, the vehicular communication and transmission module, the movement controller and the ground-penetrating radar module are mounted on the wall clinging type detection vehicle. The tunnel lining defect ground-penetrating radar detection system has the advantages that traffic closure can be omitted, and the tunnel lining defect ground-penetrating radar detection system is low in cost and high in precision.

The invention discloses a substation inspection robot navigation method and system based on neural network assistance. According to the method, a GPS/INS integrated navigation system is used for providing navigation and positioning services for an inspection robot, the positioning precision is higher than that of a single set of navigation equipment, error estimation and correction are conducted on the navigation and positioning system of the inspection robot through unscented Kalman filtering, and the positioning precision is improved compared with traditional linear Kalman filtering. A radial basis function neural network is introduced and used for improving the problem that the positioning accuracy of the GPS/INS integrated navigation system becomes poor under the condition that GPS signals are lost. When the GPS is not available, the system predicts the navigation error through the neural network, and the prediction result is used for error correction of the system, so that the positioning precision and reliability of the system are improved. The requirement for hardware is low, a series of algorithms can be achieved through software programming, and the cost is low.

This invention relates to one GPS/INS combination position guide system and its speed test correction method, wherein, the system comprises CPU unit, INS module, GPS receiver and touch screen control unit, wherein, the INS module generated speed impulse signals and movable rotation signal into GPS receiver impulse signal input end and angle signal input end; GPS receiver position guide signal output end is through latitude signals through signal speed impulse displacement value, speed impulse signal into position guide signal input end.

The invention discloses a poly GPS/INS and a transportation image fusion and positioning method applied to accurately position vehicles, belonging to the technical field of information fusion technology and intelligent information processing. In the invention, the poly GPS/INS and transportation image video and other traffic information are combined and fusion processing is carried out on such traffic information to obtain equivalent measured value; filtering is carried out by introducing state equations of the system; finally accurate vehicle positioning information is obtained. When datum mark information is collected by the image, the measured value of the datum mark is directly marked; so that system error returns to zero, thus improving positioning accuracy while supplementing some information on special road sections (such as the tunnel) by means of estimation.

Tunnel primary support and secondary lining quality detection equipment based on an adsorption type unmanned aerial vehicle carrying platform comprises an adsorption type unmanned aerial vehicle usedfor being adsorbed to the surface of a tunnel lining and moving according to a set path; the GPS/INS integrated navigation module is used for navigating the unmanned aerial vehicle; the airborne communication and transmission module is used for bidirectional communication with a ground workstation; the motion controller is used for controlling the unmanned aerial vehicle to move; the camera deviceis used for confirming the crack position; the radar host is used for tunnel primary support and secondary lining quality detection; the jet engine is used for providing power adsorbed on the wall ofthe tunnel; the ground workstation is used for designing and controlling a navigation path of the adsorption type unmanned aerial vehicle and receiving, analyzing and displaying detection data returned by the unmanned aerial vehicle; the GPS/INS integrated navigation module, the vehicle-mounted communication and transmission module, the motion controller, the camera device, the jet engine and thegeological radar are all installed on the adsorption type unmanned aerial vehicle.

The invention discloses a self-adaptive vehicle-mounted integrated navigation and positioning method, which comprises the steps of performing multi-sensor information fusion on a satellite positioning system and a strapdown inertial navigation system, constructing an adjustment factor according to factors such as satellite positioning quality on the basis of a standard integrated navigation system, and performing real-time self-adaptive adjustment on a system observation noise array, that is, constructing a self-adaptive GPS/INS Kalman filtering algorithm, thereby being capable of obtaining the position, the speed, the attitude, the acceleration, the angular velocity and other information of the high-precision vehicle in any complex environment. The method is high in real-time performance and good in robustness.

The invention relates to a three-dimensional environment sensing system for large excavating equipment in a complex environment. The system comprises a system control and data fusion processing module, a synchronous data acquisition module, a GPS/INS integrated navigation module, two PSD vibration measurement modules and two single-line two-dimensional laser radars. The synchronous data acquisition module is connected with the two single-line two-dimensional laser radars, is connected with the GPS/INS integrated navigation module, is connected with the two PSD vibration measurement modules andis connected with the system control and data fusion processing module; and the two single-line two-dimensional laser radars are respectively connected with the two PSD vibration measurement modules;and the GPS/INS integrated navigation module is connected with the synchronous data acquisition module and the system control and data fusion processing module. According to the system, hard synchronization of data of the system and data of the vibration measurement module is achieved through laser radar synchronization pulses, timestamps are stamped, time synchronization is conducted on the dataand pose data with time information measured by the GPS/INS integrated navigation module, vibration compensation and coordinate transformation are conducted, and complete and accurate three-dimensional environment perception information is obtained.

The invention discloses a pilot ship sea test system and a ship overall performance test method thereof. The pilot ship sea test system comprises a pilot ship and an auxiliary ship system. The pilot ship comprises a ship body system, a data acquisition system and a remote control and remote measurement system. The ship body system comprises a ship body shell, a propelling device and a rudder device. The data acquisition system comprises a sensor, a data acquisition instrument and a first computer; the remote control and remote measurement system comprises a GPS/INS device, an AD module and a first radio station. The auxiliary ship system comprises a following speedboat and an environment measuring ship, and a second radio station and a second computer are installed on the following speedboat. Real and reliable data sources can be provided for ship comprehensive performance test and evaluation of stability, floatability, sinking resistance, resistance and propulsion, maneuverability andseakeeping, wave load, slamming load, underwater explosion, structural strength and the like of complete and damaged ships through the pilot ship sea test system.

The invention belongs to the technical field of integrated navigation, and particularly relates to a GPS/INS integrated navigation system clock error correction method based on satellite PPS. According to the method, an INS clock is corrected by means of a GPS atomic clock, the technical problem that a GPS/INS integrated navigation system in the prior art has clock errors, and short-term stability of INS time and long-term stability of GPS time are combined, so that the integrated system obtains higher navigation positioning precision.

The invention relates to a navigation attitude method for a vehicle-mounted azimuth open-loop horizontal attitude angle closed loop. The method comprises the steps of: obtaining navigation parametersand navigation parameter errors of a vehicle through a GPS/INS integrated navigation system, wherein the navigation parameters comprise the attitude, the speed and the position of the vehicle; selecting one Kalman filtering mode of open-loop Kalman filtering and closed-loop Kalman filtering according to a preset threshold speed; and substituting the navigation parameters and the navigation parameter errors obtained by the GPS/INS integrated navigation system into the selected Kalman filtering mode to perform navigation calculation, outputting a navigation result, and performing navigation calculation on the GPS/INS integrated navigation system through Kalman filtering by adopting the method, so that azimuth angle small-amplitude oscillation of an unmanned navigation system during static orquasi-static or low-speed advancing is eliminated, and the navigation precision of the unmanned navigation system is improved.

The invention discloses an intelligent automobile interconnection and exchange safety system, which comprises a central data storage and processor, a big data cloud server, a vehicle-mounted sensor, adriver identity recognition system, a face recognition device, a safety monitoring system, a vehicle-mounted alarm system, a driver driving information system, a camera, an auditing system, a replacement system, a prompting system and a marking system, wherein the vehicle-mounted sensor comprises a GPS/INS integrated navigation system, a laser radar and a camera, collected vehicle driving state information is transmitted to the central data storage and processor through a CANBUS, and the face recognition device comprises a plurality of face recognition cameras with different angles. The accuracy of the information is ensured, some irrelevant information can be prevented from occupying information space or confusing information viewing of people, and when a user drives to a picture information or video information uploading road section, the user can be marked and prompted, so that the user can know the road condition information in advance, and the driving safety of the user is ensured.