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38 results about "Emitter identification" patented technology

Specific Emitter Identification (SEI) Systems. Specific Emitter Identification couples with classical parameter technology, providing signal identification in a dynamic threat environment where both sides employ exotic emitters and/or utilize identical platforms, thereby creating chaotic battlefield situations.

Marine personnel monitoring, overboard detection, alert and rescue system

A system for detecting and locating overboard personnel of a vessel. The system includes a plurality of transmitter units and an onboard receiver. A transmitter is assigned to be worn by each person to be monitored by the system. Each transmitter provides a unique identifier signal to the onboard receiver. The onboard receiver is initialized to establish an initial identifier configuration. The onboard receiver then continuously monitors its reception to detect any change in said initial identifier configuration. The onboard receiver triggers an alert in the event of detection of a change in said initial identifier configuration. In a first embodiment the assigned transmitters are activated prior to establishing the initial identifier configuration and the initial identifier configuration consists of all active transmitter identifiers present. In this first embodiment, the alert condition is initiated upon a failure of receipt of one of the identifiers. In a second embodiment, none of the transmitters are activated until it is submerged, the initial identifier configuration consists of no transmitter identifiers present. In this second embodiment, the alert condition is initiated upon receipt of a transmitter identifier. The system can also include a real time clock to record the time of an alert condition and/or a satellite positioning system to record the location of an alert.
Owner:MARSH MATTHEW T

Information providing method, information providing system and relay equipment

An information providing method, comprises receiving a receiver identifier and an encrypted transmitter identifier from a receiver receiving the encrypted transmitter identifier from a transmitter by a relay equipment, decrypting the encrypted transmitter identifier by the relay equipment, determining an information providing equipment providing transmitter information with respect to the transmitter based on a decryption result of the encrypted transmitter identifier by the relay equipment, requesting the transmitter information from the information providing equipment by the relay equipment, receiving the transmitter information from the information providing equipment by the relay equipment, and transmitting the transmitter information to the receiver by the relay equipment.
Owner:NTT DOCOMO INC

Devices and techniques for determining and facilitating authorized distribution of media content

A module for use in connection with a media content set-top box is described. The module may include a communications node configured to interface with the media content set-top box that receives media content, a receiver and / or transceiver and control logic. The control logic is configured so as to receive one or more first signals, via the receiver and / or transceiver, carrying corresponding one or more CMRS tower, wireless access point, and / or transmitter identifiers, to determine one or more signal strengths of the one or more first signals, and to obtain a location of the device. The location of the device can then be used to provide location specific media content or information alerts and / or to facilitate the determination of whether a use of the device, a use of an associated media content set-top box, etc., at the location is authorized.
Owner:YMAX COMM CORP

Intelligent emitter identification method based on GRU depth convolution network

ActiveCN109271926AIncrease diversityOvercome the disadvantage of requiring a lot of prior knowledgeCharacter and pattern recognitionTest sampleNetwork model
The invention relates to an intelligent emitter identification method based on GRU depth convolution network, which mainly solves the problem that the serialization characteristics of radar emitter signals can not be extracted by the prior art. The scheme comprises the following steps: radar emitter signals are classified; the radar emitter signals are simulated and sliced, the sliced samples areconverted into two-dimensional real samples, and the two-dimensional real samples are normalized and divided into training sample set and test sample set, a depth neural network based on gated circulation unit GRU is constructed; the training sample set is inputted into the depth neural network, and the trained depth neural network model is obtained by optimizing the loss function, the test sampleset is input into the trained depth neural network model, and the recognition result of radar emitter signal is obtained. The invention can extract pre-and post-correlation features of signals, avoids manual feature extraction and prior knowledge, has low complexity and accurate classification result, and can be used for radar emitter identification under complex electromagnetic environment.
Owner:XIDIAN UNIV

Apparatus and method for determining a coincidence of a position with a reference position

An apparatus for determining a coincidence of a position with a reference position, wherein radio signals from fixedly positioned radio transmitters can be received at the position, having a provider for providing properties of the radio signals of the fixedly positioned radio transmitters at the position, wherein the provided properties of the radio signals include transmitter identifications identifying the radio transmitters, a separator for separating the radio transmitters into a first number of radio transmitters previously recorded transmitter identifications of which at the reference position are identical with transmitter identifications provided at the position, and into a second number of radio transmitters previously recorded transmitter identifications of which at the reference position and transmitter identifications provided at the position are different, and a determiner for determining a measure of matching for the position on the basis of the provided properties of the radio signals, wherein both properties of the first number of radio transmitters and properties of the second number of radio transmitters are taken into account in the determination of a measure of matching, and wherein the properties of the first number of radio transmitters and the properties of the second number of radio transmitters enter the measure of matching differently.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV

Radar emitter sorting and identification method and apparatus based on multiple synchronous compressive transformations

The present invention belongs to the technical field of radar emitter identifications, in particular to a radar emitter sorting and identification method and apparatus based on multiple synchronous compressive transformations. The method comprises: obtaining a time-frequency image of a radar emitter signal through multiple synchronous compressive transformations; preprocessing the time-frequency image and extracting a texture characteristic and a moment characteristic of the time-frequency image and building a characteristic parameter set by combining a signal power spectrum parameter characteristic with a square spectrum complexity characteristic; and regarding the characteristic parameter set, sorting and identifying the signal with a support vector machine (SVM) sorter. The present invention solves the problems of a low rate in sorting and identifying the radar signal, high complexity and the like, under a condition of a currently low signal to noise ratio, such that different modulation types of radar signals can be identified accurately under the condition of the low signal to noise ratio. Further, the present invention has the advantages of good identification effect, high efficiency and good anti-noise property for complexly modulated types of radar signals as well as strong ability of adapting to a change in a parameter of the signal. Therefore, high identification performance can also be achieved under a small sample size, such that it has a certain value of being applied to a project.
Owner:PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU

Anti-collision algorithm for frame time slot ultrahigh frequency RFID system based on blind separation

InactiveCN103955657AImprove label recognition rateShort timeSensing record carriersFrame timeRadio frequency signal
The invention relates to an anti-collision algorithm for a frame time slot ultrahigh frequency RFID system based on blind separation. The anti-collision algorithm for the RFID system is put forward based on ICA and frame time slots according to ultrahigh-frequency radio-frequency signals ranging from 860MHz to 960MHz. According to the anti-collision algorithm, steps of an ICA algorithm in the RFID system are analyzed, an antenna system model with blind sources separated is established, the quantity of tags in each time slot is not larger than the quantity of antenna of a reader by means of specific selection of the quantity of the frame time slots, conditions of blind source separation identification tags are met, and synchronous identification can be performed on multiple tags through the ICA algorithm. A simulation result shows that compared with a traditional tag anti-collision algorithm and a blind separation and dynamic bit-slot grouping algorithm, the tag identification rate is high, identification time of the algorithm is less, and feasibility and high efficiency of the blind source separation technology applied to tag identification are verified further. The anti-collision algorithm has potential application value in the engineering field needing high efficiency and intelligent management.
Owner:JIANGXI UNIV OF SCI & TECH

Determining scan strategy for digital card

A method is provided for determining a scan strategy to receive data for a digital unit associated with an electronic support measure receiver. The receiver scans a surrounding environment to detect and receive emitted signals while utilizing the digital unit to improve emitter identification. The digital unit is provided with the data according to requirements of digital signal processing algorithms implemented by the unit.
Owner:LOCKHEED MARTIN CORP

Method and apparatus for position replacing and identification code changing of emitters of TPMS system

InactiveCN103303075ADoes not significantly increase costsEasy to operateTyre measurementsOperation modeEmitter identification
The invention relates to a method and an apparatus for position replacing and identification code changing of emitters of a TPMS system. The apparatus comprises a multimedia playing device and a receiver. The multimedia playing device outputs an emitter transposition protocol frame to the receiver when receiving an emitter position replacing instruction and selection of two emitters in need of replacing of positions. The multimedia playing device outputs an identification code changing protocol frame to the receiver when receiving an identification code changing instruction and a changed emitter identification code from an input device. A memory of the receiver stores a plurality of emitter positions and identification codes. Positions of the two emitters in the memory are replaced according to the emitter transposition protocol frame, and the identification code of one emitter in the memory is changed according to the identification code changing protocol frame. Compared with conventional operation modes, a scheme provided by the invention has the advantages of low cost and simplified operation.
Owner:BAOLONG HUF SHANGHAI ELECTRONICS CO LTD

Image processing method

The invention provides an image processing method. The method comprises the following steps that 1, for each pixel point of an image, grayscale frequency and coordinate information of the pixel pointare recorded; 2, the grayscales of all the pixel points in the image are clustered according to the gray level types to form a spatial gray level area position distribution diagram Ti with different gray level types as characteristics; 3, all gray level blocks in the gray level area position distribution diagram with different gray level types are screened, and target blocks are selected; the target blocks which are found from the gray level area position distribution diagram with different gray level types are combined, identified and subjected to image reconstruction. Compared with originaldeep leaning image identification, the image processing method has the advantages that another way is provided, a grayscale standard is adopted for conducting block division on the image, the restrictions of the learning capacity and the variable target edge gradient are removed, the data processing speed is greatly increased, the identification validity is greatly improved, the requirement for hardware is remarkably reduced, the high universality is achieved, and the difficult problems of complex environment, low contrast degree and tracking identification for a small target are solved.
Owner:四川康吉笙科技有限公司

Apparatus and method for determining a coincidence of a position with a reference position

An apparatus for determining a coincidence of a position with a reference position, wherein radio signals from fixedly positioned radio transmitters can be received at the position, having a provider for providing properties of the radio signals of the fixedly positioned radio transmitters at the position, wherein the provided properties of the radio signals include transmitter identifications identifying the radio transmitters, a separator for separating the radio transmitters into a first number of radio transmitters previously recorded transmitter identifications of which at the reference position are identical with transmitter identifications provided at the position, and into a second number of radio transmitters previously recorded transmitter identifications of which at the reference position and transmitter identifications provided at the position are different, and a determiner for determining a measure of matching for the position on the basis of the provided properties of the radio signals, wherein both properties of the first number of radio transmitters and properties of the second number of radio transmitters are taken into account in the determination of a measure of matching, and wherein the properties of the first number of radio transmitters and the properties of the second number of radio transmitters enter the measure of matching differently.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV

Fingerprint feature extraction method, identity detection method and emitter identification and correction method

The invention relates to a phase prediction error fingerprint feature extraction method and an identity detection method and an emitter identification and correction method based on the feature. The correction method includes the following steps: estimating the parameters of received signals in each time slot of burst data; acquiring the phase prediction error of each time slot in the burst data;aggregating the phase prediction error of multiple time slots in a set time period to obtain phase prediction error vectors; drawing a curve in ascending order of the error vectors, acquiring a detection threshold, and detecting the user identities of adjacent time slots; and correcting the original identification result of an emitter by taking the user identity detection result as priori information to obtain a final identification result of the emitter. The continuity of adjacent time slots on a carrier phase is proposed as a fingerprint feature, whether the user identities of adjacent timeslots are the same or not is judged based on the feature, and the original identification result is corrected by taking the user identity detection result as priori information. The identification rate is improved. The methods have high practical application value.
Owner:PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU

Broadcasting terminal and viewing method

A multimedia terminal comprises a receiver adapted to receive a multimedia signal from a network transmitter, the multimedia signal including a transmitter identifier corresponding to the network transmitter. The multimedia terminal also comprises a processor operatively coupled to the receiver, adapted to evaluate the transmitter identifier included in the multimedia signal. The multimedia terminal also comprises a multimedia processor operatively coupled to the receiver and the processor, adapted to processor the multimedia signal based on the evaluation of the transmitter identifier by the processor. The evaluation of the transmitter identifier by the processor comprises determining whether the transmitter identifier may correspond to a fee-based transmitter. The multimedia terminal may further comprise a display operatively coupled to the multimedia processor, adapted to display a multimedia service associated with the multimedia signal based on the evaluation of the transmitter identifier by the processor.
Owner:LG ELECTRONICS INC

Lifespace data collection from discrete areas

Techniques are described to collect data via a client device, such as a mobile phone. The data, referred to as “lifespace data,” comprises one or more measurements of an individual's functionality, a transmitter identification associated with a transmitter positioned in a discrete area (e.g., a room in a subject's residence), and a timestamp indicating when the transmitter identification was transmitted or received. One or more transmitters can be positioned in one or more discrete areas (e.g., throughout an individual's residence or workspace), with each transmitter configured to transmit a unique transmitter identification. In implementations, a transmitter comprises a Bluetooth beacon, and a transmitter identification comprises a Bluetooth identification number. The client device may be configured to provide the lifespace data to a server for storage, analysis, and intervention functionalities.
Owner:BOARD OF RGT UNIV OF NEBRASKA

Multi-level regulating switch based on start of iris identification

The invention discloses a multi-level regulating switch based on the start of iris identification. The switch includes a multi-level regulating switch and an iris identifier which is connected to the multi-level regulating switch. The iris identifier includes: (1) a sampling module; (2) a pre-processing module; (3) a feature coding module which is intended for extracting and coding the features of an iris image and includes a first LBP operator processing sub-module, a second LBP operator processing sub-module, a third LBP operator processing sub-module and a fourth LBP operator processing sub-module; and (4) a coding matching module. According to the invention, the switch increases the association between a center point and other neighboring domains in the periphery thereof, and can meet the demands of image textures having different sizes and frequencies. The switch does not effect the association between the center point and the neighboring domains in the periphery thereof, can continuously reduce coding length, saves storage space, reduce computing amount, increases identification speed, improves identification accuracy, and obtains higher robustness.
Owner:罗嗣扬
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