120 results about "Radar transmitter" patented technology

A system comprises a light source, a radar transmitter, a light receiver, a radar receiver, and a processor. The light source is configured to emit a light pulse. The radar transmitter is configured to transmit a radar signal, wherein an emission direction of the light pulse of the light source and a transmission direction of the radar signal of the radar transmitter are at least in part synchronized. The light receiver is configured to detect a reflected light pulse, the radar receiver is configured to detect a reflected radar signal, and the processor is configured to determine a dimensional representation of an environment based at least in part on the detected reflected light pulse and the detected reflected radar signal.

Systems and implements sense, analyze, and display different soil parameters. A soil sensing system includes a mechanical component of an agricultural implement and at least one sensor disposed on the mechanical component. The sensor generates an electromagnetic field through a region of soil as the agricultural implement traverses a field. The sensor comprises at least one radar transmitter and at least one radar receiver and the sensor measures different soil parameters including a soil dielectric constant.

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.

The disclosed embodiment is about an adaptive strategy for the optimal photon number of a quantum interferometer radar under a stratocumulus cloud background. It includes: a QIR system generates detection photons and reference photons with preset photon numbers, and directs the detection photons toward the detection target; the QIR system receives the reflected detection photons; a mathematical model is established based on the influence of the scattering, absorption, and other characteristics of the liquid water content of the stratocumulus clouds in the atmospheric environment on the reflected detection photons, and the relationship between the liquid water content of the stratocumulus clouds, the number of radar transmitter signal photons, and the transmission distance of the detection photons is obtained; based on the relationship between the liquid water content of the stratocumulus clouds, the number of transmitter signal photons, and the transmission distance of the detection photons, the number of radar transmitter photons is adaptively adjusted so that the radar system can achieve the optimal average photon number. The disclosed embodiment effectively improves the robustness of the QIR system under the water content of stratocumulus cloud particles by adjusting the average photon number of the QIR system in real time.

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.

A radar transmitter includes: a plurality of transmission antennas that transmit a transmission signal; and a transmission circuit that applies a phase rotation amount corresponding to a Doppler shift amount and a code sequence to the transmission signal to perform multiplexing transmission of the transmission signal from the plurality of transmission antennas. Each of the plurality of transmission antennas is associated with each of a plurality of combinations of the Doppler shift amount and the code sequence. Each of the plurality of combination is different at least one of the Doppler shift amount and the code sequence, and the Doppler shift amounts of those of the plurality of combinations which are associated respectively with at least two transmission antennas of the plurality of transmission antennas are the same Doppler shift amount, the at least two transmission antennas being a first sub-array antenna.

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.

A radar system comprises a first radar transmitter arranged to transmit a first signal that propagates perpendicular to a direction of travel of a first object and a second object. The radar system further comprises a first radar receiver arranged to receive the first signal. Additionally, the radar system comprises a second radar transmitter spaced apart from the first transmitter and arranged to transmit a second signal that propagates perpendicular to the direction of travel of the first object. The radar system comprises a second radar receiver arranged to receive the second signal. The radar system further comprises a processor arranged to detect a space between the first object and the second object.

The invention discloses a method for correcting a laser radar, a control device and the laser radar. Acquiring light spot energy data generated by a detector when a reflected light beam irradiates a detection surface of the detector of the laser radar, wherein the reflected light beam is formed by reflecting an emission light beam emitted by an emitter of the laser radar through the inner wall of the laser radar; and correcting the receiving position of the detector and / or the transmitting parameter of the transmitter according to the light spot energy data. According to the embodiment of the invention, the optical loop formed by the reflection of the inner wall of the laser radar is utilized to realize the correction of the receiving position of the detector and / or the transmitting parameter of the transmitter. The scheme does not depend on an external environment and is wide in application scene; normal work of the laser radar is not affected, and a user can be non-inductive. And the transmitting performance and the receiving performance of the laser radar can be corrected, so that the detection precision of the laser radar is integrally improved.

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.

A method for optimizing the suppression of FMCW radar transceiver leakage and stationary clutter is provided, wherein the analog anti-interference signal generated after analog memory calibration and the real-time intermediate frequency signal are subjected to difference and amplification processing in the analog domain as analog memory compensation; the digital anti-interference signal generated after digital memory calibration and the real-time digital intermediate frequency signal after analog memory compensation are subjected to difference processing in the digital domain as digital memory compensation, thereby finally achieving deep compensation for transceiver leakage and stationary clutter. The present invention utilizes the characteristics that the transceiver leakage and environmental clutter of the FMCW radar are superimposed on the intermediate frequency signal, and realizes comprehensive and deep suppression of transceiver leakage and environmental clutter at the same time by performing analog memory feedback compensation and digital memory feedback compensation on the intermediate frequency signal.

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).