86 results about "Radar transmitter" patented technology

This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for bistatic radar assistance sensing. A radar-receiver receives (210), from a radar-transmitter, a configuration message that configures the radar-receiver to assist the radar-transmitter with bistatic radar sensing. The radar-receiver receives (214) a reflection of the radar signal. Responsive to the receiving the reflection of the radar signal, the radar-receiver transmits (218), to the radar-transmitter, a radar measurement report message. The radar-receiver receives (202), from the radar-transmitter, a radar capability enquiry. The radar-eceiver transmits (204), to the radar-transmitter in response to the radar capability enquiry, a radar capability response that indicates radar capabilities supported by the radar-receiver for the bistatic radar sensing.

A wireless communication network performs multi-static radar operations, including operating multiple access points as geographically-diverse radar transmitters that transmit illumination signals, for illumination of a target region, and an example User Equipment (UE) operates as a radar receiver with respect to the multi-static radar transmission. The network may perform multi-static radar operations on demand, for power savings and interference reduction, and UEs may indicate particular radar-sensing needs or capabilities when requesting multi-static radar operation, for consideration by the network when configuring the corresponding illumination-signal transmissions.

The invention relates to a radar system (100) and a method for operating a radar system (100). Furthermore, the invention relates to a radar transmitter (50), a radar receiver (70), and a central unit (10) of such a radar system (100). In addition, the invention relates to a method for operating a radar transmitter (50), a method for operating a radar receiver (70), and a method for operating a central unit (10). The generated radar ramp signal is designed to have a multitude of orthogonal carrier frequencies. This advantageously enables continuous, interference-free operation with high measurement quality, even if individual frequency ranges are affected by interference.

A gunshot detection system includes a housing, a radar transmitter connected to the housing, a plurality of radar antennas connected to the housing, and a controller connected to the housing. The controller is operatively connected to the radar transmitter to cause the radar transmitter to generate radar transmission signals. The controller is configured to receive and record reflection data from the plurality of radar antennas. The controller is configured to determine a gunshot origination location of each bullet moving through a detection zone based on the reflection data.

Systems and methods are described, and one system includes a three-dimensional (3D) geometric tracker connected to a multiband (MB) inverse synthetic aperture array radar (ISAR), and a classification / alarm logic. The MB ISAR includes spatially distributed radar transmitters (TXs) and receivers (RXs), a TX / RX allocation logic, and a tomographic (TM) image logic. The TX / RX allocation logic is configured to receive 3D tracking data from the 3D geometric tracker, indicating subject 3D position and 3D orientation and, in response, dynamically allocate TXs and RXs to maintain MB illumination of and maintain MB reception of multiple scatter angles from subjects. The TM image processor is configured to construct TM images from the scatter angles, using 3D tracking data, for input to the classification and alarm logic. Optionally, the TX / RX resource allocation logic is configured to receive situation feedback data, for feedback adjusting of allocation of TXs and RXs.

A first radar transmitter capable of transmitting a pulse-modulated radar signal to a target, a second radar transmitter capable of transmitting a radar signal to the target, a radar receiver capable of simultaneously receiving a radar signal transmitted by the first radar transmitter and reflected by the target and a radar signal transmitted by the second radar transmitter and reflected by the target, and a signal control unit to control one or more of a carrier frequency, a pulse recurrence frequency, and a duty ratio of a pulse-modulated radar signal, and a carrier frequency of a non-pulse-modulated radar signal with respect to the first radar transmitter or the first radar transmitter and the second radar transmitter are provided.

The artificial intelligence (AI) drone shooting device according to the present invention comprises: a drone aircraft (100) equipped with a radar that identifies and tracks a target; and a shooting control device (200) attached to the lower part of the drone to control automatic shooting. The drone aircraft (100) includes a GPS antenna unit (110) for determining the current location of the drone; a radar transceiver unit (120) for detecting elevation, azimuth, and distance values ​​of a target object; and a communication antenna unit (130) capable of communicating with a remote control unit. The radar transceiver unit (120) is installed on the drone aircraft in a vertical structure with a radar transmitter (Tx) and a receiver (Rx) to facilitate target detection and tracking even when the tracked target rapidly ascends or descends. The fire control device (200) includes a camera unit (210) composed of an optical (EO) camera, a TOD camera, and a laser rangefinder (LRF) to capture images of the target object; and a firing device (220) including a gun support and a firing device.

The invention provides a laser radar calibration method and device and a computer readable storage medium, and the method comprises the steps: obtaining the working time and junction temperature of n times of scanning of a laser radar, and determining the emission light intensity of the laser radar according to the working time and junction temperature of n times of scanning. Further, probe light is emitted to the target object, an echo signal is received, and the reflectivity of the target object is obtained according to the intensity of the emitted light and the echo signal. Through the method, the device and the computer readable storage medium, the problem that the measured reflectivity information is inaccurate due to power attenuation of the laser radar transmitter can be improved, and the accuracy of the detection information is improved.

In MIMO radar systems using the FM-ICW system, interference occurs in the beat signal due to cross-correlation components when the target is at close range. [Solution] The radar transmitter 200 is a transmitting signal that repeats a transmitting chirp signal consisting of multiple pulses having a transmission interval and whose frequency changes over time, and applies one of several classified phase change amounts with respect to the distance to the target to each of the multiple pulses in the transmitting chirp signal, and outputs with a time shift amount; and the radar receiver 300 receives a receiving signal that repeats a receiving chirp signal consisting of multiple pulses of the transmitting chirp signal of the transmitting signal received from multiple receiving antennas 12 that receive the received wave that has been reflected off the target from the transmitted wave from multiple transmitting antennas 11, and generates a beat signal having a frequency that is the difference between the frequencies of the corresponding pulses of the transmitting chirp signal and the pulses of the receiving chirp signal, thereby obtaining distance information to the target.

1. Name of the product in this design: Phased array incoherent scattering radar transmitting power supply. 2. Application of this design: This product relates to a power supply for a phased array incoherent scattering radar. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A radar system has a plurality of radar transmitters and at least one radar receiver, each radar transmitter having a transmitter adjuster for tuning the output of the respective transmitter, for example tuning the phase of each of a plurality of constellation points of a constellation. The radar system may operate in a calibration cycle by transmitting from a single radar transmitter using the transmitter adjuster, obtaining an estimate of the error in the transmitter adjuster and adjusting the transmitter adjuster according to the estimate of the error. In an operation cycle the radar system may transmit using the plurality of radar transmitters, the signal being transmitter from each radar transmitter being tuned using the transmitter adjuster. Calibration cycles are interspersed between operation cycles during operation.

The application provides a radar transmitter radio frequency signal detection device and detection method, which comprises a device base, and a loading box is arranged above the device base. The radar transmitter radio frequency signal detection device and detection method are provided with a protection mechanism outside the test box, so that the test box is stored by the protection block, the test box does not directly contact the outside during transportation, the inside of the protection block is further provided with a damping spring and a shock absorber, the test box is protected by damping, the protection efficiency is further improved, the periphery of the protection block is further provided with a bottom plate and an adjusting screw rod, four adjusting screw rods do not interfere with each other, so that the position of the bottom plate can be adjusted at will according to the field conditions, the height of the protection block is adjusted, the position of the test box is adapted, and the use convenience of the test box is improved, and the test box is convenient to protect and transport.

This application discloses a signal receiving method and device, a medium, and a radar system. The radar system includes: a window, a radar transmitter, a radar receiver, a processor, and a signal receiving circuit. The radar transmitter is configured to: transmit a radar detection signal to a front obstacle through the window. The radar receiver is connected to the signal receiving circuit, and receive a reflected signal generated by the obstacle, and transmit the reflected signal to the signal receiving circuit. The signal receiving circuit is connected to the processor, and when the radar transmitter transmits the radar detection signal, receive, after preset duration, the reflected signal where the preset duration is a sum of first duration required for the radar detection signal to arrive at the window and second duration required for the reflected signal to arrive at the radar receiver from the window.

The application discloses a high-frequency radar transmitting device and a transmitting control method thereof, and belongs to the technical field of radar transmitters. The high-frequency radar transmitting device comprises a shell and a first transmitter installed in the shell. The first transmitter is used for amplifying input signals. The first transmitter is provided with an acquisition unit, a control unit and an execution unit. The acquisition unit is used for acquiring at least one parameter in power supply voltage, bias voltage, total current, output voltage standing wave ratio and temperature of the first transmitter. The control unit can compare the acquired parameters with corresponding preset ranges. If the value of a certain parameter exceeds the corresponding preset range, the control unit sends a shutdown instruction to the execution unit. The execution unit can shut down the first transmitter according to the received shutdown instruction, and restart the first transmitter according to the received restart instruction after a set time length. The high-frequency radar transmitting device has high automation degree, and ensures the stability and continuity of the high-frequency radar transmitting device.

A system, clutter cancellation circuit and a method generate a clutter cancellation signal for radar by receiving, at the clutter cancellation circuit, a radar transmission signal generated by a radar transmitter, and generating, by the clutter cancellation circuit, the clutter cancellation signal by attenuating, delaying and phase shifting the received radar transmission signal using attenuator, a signal delay, and a phase shifter in any order. The clutter cancellation signal can then be used to cancel one or more clutter signals within a radar return signal.

The invention discloses a noninvasive blood glucose detection device and method. The noninvasive blood glucose detection device comprises a radar transmitter, a radar receiver, a data acquisition module, a blind source separation module, a feature extraction module and a blood glucose evaluation module, a broadband radio frequency modulation signal emitted by the radar transmitter irradiates a certain human tissue, a reflected radio frequency signal is received by the radar receiver and then is converted into an analog baseband signal, and the analog baseband signal is sampled by the data acquisition module and then is converted into a digital signal. After the electromagnetic waves are transmitted to the blind source separation module for noise filtering, interference removal and data enhancement processing, feature information of the electromagnetic waves in the subcutaneous tissue blood transmission process is extracted, and then blood glucose concentration information is obtained through machine learning according to the feature information. When the device is used for measuring blood glucose, test paper or a reagent is not needed, and low detection cost, zero pollution, comfort and no feeling are realized.

The utility model discloses a radar ranging auxiliary device belongs to the shaft ranging technical field, solved the safety risk and the problem of inaccuracy of measurement of original surveying shaft method, the utility model discloses a base disc bottom stand column upper end is connected with the vertical section rotation of surveying pipe, is equipped with the steel wire rope winch on the surveying pipe, is equipped with the first surveying cross bar in the surveying pipe straight section, the upper side of surveying pipe is equipped with pulley device respectively, and the steel wire rope winch is connected with the first surveying cross bar through the pulley device of steel wire rope passing through the upper side of surveying pipe, and the first surveying cross bar end is equipped with radar fixing device, and the bottom of radar fixing device is equipped with the surveying radar transmitter, and the distribution box is equipped on the base stand column, and the distribution box is connected with the surveying radar transmitter electricity through the pulley device of cable passing through the lower side of surveying pipe, and the distribution box is equipped with data receiving display. The utility model improves the measurement speed and accuracy, solves the safety problem of original surveying device use process, and improves the operation efficiency.

The application discloses a radar communication integrated design method and device based on power domain multiplexing, which comprises the following steps: superimposing a radar signal and a communication signal in a time-frequency domain to serve as a radar communication integrated signal; processing the radar signal of the radar communication integrated signal received by a communication receiving end through a time delay frequency difference estimation algorithm, removing the estimated radar signal, separating out the communication signal, and demodulating the communication signal; and directly taking the radar communication integrated signal received by a radar receiving end as a radar signal to perform target detection, so that the purpose of hiding communication information is achieved by hiding the communication signal in the radar transmitting signal; the radar transmitter and the signal processor do not need to be changed, only one more step of removing the radar signal through the time delay frequency difference estimation algorithm is needed for the communication processing system, the change of the whole system is small, the radar and the communication are shared in the time domain and the frequency domain, and the resource utilization rate is effectively improved.

Systems and methods for controlling operation of a robot. A system and method includes a robot. The radar transmitter is configured to output a radar signal. The harmonic receiver is configured to receive a harmonic signal. The harmonic reflector is configured to be coupled to an object. The harmonic reflector is configured to output a harmonic signal in response to a radar signal contacting the harmonic reflector. The control unit is in communication with the robot, the radar transmitter and the harmonic receiver. The control unit is configured to determine a position, velocity and orientation of the harmonic reflector based on the harmonic signal, and to limit operation of the robot based on the position, velocity and orientation of the harmonic reflector.

A gunshot detection system includes a housing, a radar transmitter connected to the housing, a plurality of radar antennas connected to the housing, and a controller connected to the housing. The controller is operatively connected to the radar transmitter to cause the radar transmitter to generate radar transmission signals. The controller is configured to receive and record reflection data from the plurality of radar antennas. The controller is configured to determine a gunshot origination location of each bullet moving through a detection zone based on the reflection data.

The invention particularly relates to a missile-borne phased array multichannel radar clutter data refinement simulation method, which comprises the following steps of: obtaining coordinates of a radar transmitter and receiving channels at each pulse moment according to a trajectory of a missile body platform within coherent accumulation time; dividing a detection scene into super-resolution ground points, and combining the super-resolution ground points according to the slant-range resolution and the Doppler resolution in sequence to obtain each distance ring and a corresponding scattering unit; then, calculating a directional diagram gain and clutter energy of each scattering unit; and finally, performing four-stage element-by-element simulation by adopting a channel-pulse-distance ring-scattering unit mode based on a strict slant range process, and performing echo superposition on the scattering units of the same distance ring to obtain clutter data of each pulse and each distance ring under each receiving channel. Through the method, high-fidelity missile-borne phased array multichannel radar clutter echo data under a given detection scene and a radar working condition can be obtained, and simulation data support is provided for further research on a missile-borne STAP technology.

The invention provides an unmanned aerial vehicle laser radar-based earthwork visualization accurate measurement and calculation device, and relates to the technical field of surveying and mapping engineering, and the device comprises a mobile base, a storage box arranged on the top end working surface of the mobile base, an unmanned aerial vehicle body capable of being parked on the storage box, and an external control device; the movable base has preset bearing capacity and can support the weight of each component on the movable base; the storage box is provided with a preset containing space, electric lifting rods are arranged at the four corners in the storage box, the telescopic ends of the electric lifting rods are connected with the parking platform, and the parking platform can make contact with the unmanned aerial vehicle body. A laser radar measuring mechanism is arranged on one side of the unmanned aerial vehicle body and used for scanning and measuring topographic data of a construction area. Through the arrangement of the laser radar measurement mechanism, the stability of the laser radar transmitter in the measurement process is ensured, so that the laser radar can efficiently and accurately scan and measure topographic data of a construction area.

The invention relates to a central unit (Z) for a radar system, which, in addition to the central unit (Z), comprises at least one radar transmitter (S-1, S-2, S-3, Sn) and at least one radar receiver (E-1, E-2, E-3, En). The central unit (Z) provides an optical carrier signal, modulates a radar driver signal onto the optical carrier signal, and transmits the optical carrier signal modulated with the radar driver signal to the at least one radar transmitter (S-1, S-2, S-3, Sn) and / or the at least one radar receiver (E-1, E-2, E-3, En). The central unit (Z) receives an optical signal from the at least one radar receiver (E-1, E-2, E-3, En) to which a radar echo signal is superimposed, and separates the superimposed radar echo signal from the received optical signal by means of an opto-electrical conversion.By mixing the optically-to-electrically converted radar echo signal with a local oscillator signal, a downward conversion of the radar echo signal into a lower frequency signal is performed in the central unit (Z).

Existing multistatic configurations of Radar systems requires a direct LoS signal and / or time synchronization among the Radar transmitter and the multistatic distributed Radar receivers. The present disclosure provides a phaseless frequency-modulated continuous-wave multistatic Radar (PFMR) imaging that relaxes requirement of the direct LoS signal and only requires a plurality of parameters of a FMCW signal comprising a chirp signal rate, a carrier frequency and, a period of chirp to be known. Further, it also removes condition of the time synchronization among a plurality of FMCW multistatic distributed Radar receivers. However, because of absence of the time synchronization among a plurality of FMCW multistatic distributed Radar receivers, an unknown random phase offset appears after deramping. The present disclosure eliminates the unknown random phase offset, by performing autocorrelation function on a mixed signal, resulting in a phaseless measurement data corresponding to a plurality of FMCW Radar imaging signals.

The utility model provides a groundwater seepage monitoring device, which comprises a fixed frame fixed on the ground, and the fixed frame is provided with a video monitoring camera, a data acquisition device and a data processing device, the telemetering rain gauge is mounted on the side surface of the fixed frame and is arranged upwards; the radar water level gauge comprises a radar host and a plurality of radar emitters, the radar host is installed in the fixed frame, and the radar emitters are distributed in the pumping well of the monitored target area; the TDR moisture meter comprises a moisture meter main machine and a plurality of probes, the moisture meter main machine is installed in the fixing frame, and the probes are distributed in an underground soil layer of a monitoring target area; the data acquisition terminal is mounted in the fixed frame and acquires data through a data line; and the wireless communication module is connected with the data acquisition terminal and wirelessly transmits the data acquired by the data acquisition terminal to a background. The device can monitor underground soil moisture content and underground water seepage real-time data in real time, and is wide in monitoring range and comprehensive in data.

This invention relates to a positioning method, apparatus, computer equipment, and storage medium. The method includes: transmitting a time-modulated frequency diversity signal to a target via a radar transmitter mounted on a mobile platform, and receiving the received signal reflected from the target via a receiver of the local radar; performing phase compensation based on the time-modulated frequency diversity signal and the received signals at different times; determining an equivalent received signal vector of an extended virtual frequency diversity array based on the received signals at different times after phase compensation, wherein the extended virtual frequency diversity array includes holes and a uniform virtual frequency diversity array without holes; selecting a uniform virtual frequency diversity array without holes to determine a uniform received signal vector; determining an equivalent received signal steering vector based on the uniform received signal vector; and constructing a range-azimuth spectrum based on the uniform received signal vector and the equivalent steering vector, and calculating and determining the target position.

This invention discloses a radar signal enhancement device, including a radar antenna comprising a radar transmitter, a radar tracker, and a radar support. The radar tracker is pot-shaped and has an internal pot surface cleaning and heating mechanism. The pot surface cleaning and heating mechanism includes a functional column and a cleaning plate. One end of the functional column rotatably extends through the center of the radar tracker to the outside and is connected to a drive motor. Both ends of the cleaning plate are fixedly inserted through the two sides of the functional column and are flush with the edges of the radar tracker. This invention, by incorporating the pot surface cleaning and heating mechanism, effectively collects and processes the dust covering the surface of the radar tracker and heats the surface, preventing ice formation on the radar tracker surface in cold regions, which would affect signal refraction efficiency and thus improve the strength of the received radar signal.

The utility model discloses an intelligent railway construction engineering construction supervision vehicle based on radar signal processing, and belongs to the technical field of engineering supervision equipment.The intelligent railway construction engineering construction supervision vehicle comprises a vehicle body, a rectangular box is fixedly connected to one side of the vehicle body, an electric push rod is fixedly installed in the rectangular box, and an adjusting mechanism is arranged at the telescopic end of the electric push rod; a radar mechanism is arranged at the top end of the transverse plate and comprises a radar transmitter, the radar transmitter is fixedly installed at the top end of the transverse plate, a radar receiver is fixedly installed at the position, located on one side of the radar transmitter, of the top end of the transverse plate, and an image processing mechanism is fixedly installed in the vehicle body; a controller is fixedly mounted on one side of the image processing mechanism in the vehicle body; according to the invention, comprehensive monitoring of a supervision area is realized by using a radar signal processing technology, the supervision efficiency and quality are improved, and meanwhile, the system is simple in structure and low in cost, and can efficiently carry out railway construction project construction supervision.

The invention relates to a radar system (100) and a method for operating a radar system (100). Furthermore, the invention relates to a radar transmitter (50), a radar receiver (70), and a central unit (10) of such a radar system (100). In addition, the invention relates to a method for operating a radar transmitter (50), a method for operating a radar receiver (70), and a method for operating a central unit (10). It is intended that a frequency-modulated noise signal is used as the radar driver signal for the radar system (100). Advantageously, the non-periodicity of the noise signal is used to uniquely identify the distance to a target based on the noise signal contained in the radar echo signal. Thus, the noise signal achieves a large range of uniqueness for range measurement and avoids overreach of the radar system (100).

A system and method for verifying the scattering characteristics of an airborne escort target, a two-aircraft formation is constructed for scattering characteristic testing, a forward pod is installed at the wing tip of the leading edge of each aircraft, a rearward pod is installed at the wing tip of the trailing edge, and a complete radar transmitter and receiver are integrated inside each pod, which can independently complete radar signal transmission, scattering signal reception and preliminary processing. The aircraft is equipped with a global positioning system and a tactical data link for precise positioning of the aircraft and sharing and collaboration of key information. The invention uses multiple flight strategies such as forward and rear formation, lateral formation and dynamic formation to measure the mutual irradiation of the two aircrafts, comprehensively obtain the forward, rear, lateral and full-angle radar scattering characteristic signals of the target aircraft, generate high-precision two-dimensional radar images by combining echo data processing technology, and accurately locate electromagnetic scattering defects.