17 results about "Early-warning radar" patented technology

This invention provides a wavefront design method and system based on a space-based early warning radar, including acquiring the system scanning time, radar range-azimuth ground coverage range, beam coverage overlap rate, radar azimuth beam center, and radar initial wavefront near-end down-view angle; determining the 3-dB elevation main lobe beamwidth of the current wavefront based on the near-end down-view angle value of the current range wavefront; determining the far-end down-view angle value of the current wavefront based on the beam center calculation result of the current range wavefront; iteratively updating the near-end down-view angle of the next range wavefront to the near-end down-view angle of the current wavefront, and outputting all range wavefront division results; sequentially calculating the 3-dB azimuth main lobe beamwidth based on the near-end spatial cone angle of each azimuth wavefront, sequentially updating the beam center and far-end down-view angle of the azimuth wavefront, iteratively processing until the azimuth-ground distance meets the given azimuth coverage requirements; and finally outputting the wavefront design calculation results that meet the range-azimuth coverage requirements and the required dwell time for each wavefront.

The invention provides a probing and driving integrated intelligent prevention and control system, and the system comprises an early warning radar device which is used for scanning the airspace in the visual field of the early warning radar device, determining an early warning target, and updating an early warning target information table in real time based on the determined early warning target; the first information processing device screens a preset number of early warning targets from the early warning target information table based on a preset screening strategy set as screening targets, and generates or updates a screening target information table; the guide radar device is in communication connection with the first data processing device, and the guide radar device scans the airspace in the field of view of the guide radar device, determines a to-be-processed target, compares and fuses the to-be-processed target with a screening target in the screening target information table, and generates or updates a to-be-processed target information table; the expelling array comprises a plurality of expelling devices, the expelling devices correspond to different expelling airspaces, and the expelling devices execute expelling operation on the to-be-expelled targets in the to-be-expelled target queues based on the respective to-be-expelled target queues; and a second information processing device.

The invention discloses a rotary excavating drill bit with an early warning device. The rotary excavating drill bit comprises a rotary excavating barrel, a first early warning sensor, a rotary excavating strip seat and a sensor electric connection socket located in the middle of the top end of the rotary excavating barrel. The device has the beneficial effects that an early-warning radar sensing scanning circular surface can be formed through a group of first early-warning sensors which are linearly distributed, dangerous obstacles in an unknown area in front of a rotary excavating section can be comprehensively scanned without dead angles, and high-value buried objects such as underground important cables and the like are prevented from being damaged by rotary excavating; the early warning sensor I is arranged in the protective circular groove with the micropore cover, so that the early warning sensor I is prevented from being damaged; the structure function of closing the fan-shaped hole in the end part by virtue of self-rotation adjustment is achieved, so that rotary soil can be ensured to enter the rotary excavating barrel, and the soil can be prevented from falling off after being lifted and moved out of the tunnel; the problem that due to the rotary digging depth problem, connection between a sensing element arranged on a rotary digging structure and a cable is inconvenient is solved.

The application discloses a thunder and lightning comprehensive detection early warning system and a thunder and lightning detection method thereof, which comprises an atmospheric electric field detection module, a meteorological radar module and a system module. The atmospheric electric field detection module is used for detecting characteristic value A of a thundercloud in a specific area, which at least contains electric field data. The meteorological radar module is used for detecting characteristic value B of the thundercloud in the specific area, which at least contains geographic position data. The system module is used for connecting the atmospheric electric field detection module and the meteorological radar module, and combining the received characteristic value A with the characteristic value B to form thunder and lightning early warning information. The application combines the meteorological radar and the atmospheric electric field equipment, embeds the meteorological radar device into the atmospheric electric field instrument, detects echo data by the radar, converts the echo data into an echo intensity color map, and superimposes the color map on a map to form a thunder and lightning detection early warning radar system.

The present disclosure provides a mobile robot, comprising: a mobile base, used for moving to any position or pausing at any position and determining an orientation angle; a robotic arm, used for picking up cargo from a pickup position and transferring the cargo to a drop-off position; an early warning radar, used for acquiring point cloud information around the mobile base; and a safety radar, used for acquiring point cloud information around the mobile base. The present disclosure can realize safety protection during operation of the mobile robot, and prevent the robotic arm from accidentally injuring moving personnel.

Radome element (1) for a distance warning radar of a vehicle, wherein the radome element (1) is formed as a two-component component with an inner plastic film (4), wherein the radome element (1) - a visible component (2) made of a transparent plastic, - the three-dimensionally formed and at least one-sided printed plastic film (4) with radar-transparent chrome optics between the visible component (2) and a rear component (3) and - the rear component (3) made of black or transparent plastic with at least one lateral transparent light coupling surface (L1) formed in the edge area and / or a further transparent light coupling surface (L2) formed in the edge area includes characterized in that the rear component (3) is provided with a surface coating (B) designed for light extraction in the direction of the visible component (2).

This invention proposes a dual-band cooperative anti-UAV radar system and method. An X-band search and early warning radar searches for and tracks interception targets in the warning airspace at first-cycle intervals, and sends the acquired target information to its corresponding Ka-band command guidance radar. The Ka-band command guidance radar, based on the received target information, controls the interceptor to carry out the interception, thereby achieving the purpose of countering UAVs. By using the X-band search and early warning radar to search for and track the target, and the Ka-band command guidance radar to control the interceptor to carry out the interception, the system can ensure the accuracy of task execution by dividing the target objects. Furthermore, because the number of tasks that each radar needs to handle is reduced, the number of tasks it can handle is increased, thereby improving the system's comprehensive interception capability in multi-target, clustered, and saturation attack scenarios.

The invention relates to a low-altitude radar, in particular to a vehicle-mounted low-altitude early warning radar, which comprises a radio frequency front-end module used for transmitting and receiving millimeter wave signals and realizing original data acquisition of target distance, speed and angle; the signal processing module is used for converting the original data acquired by the radio frequency front-end module into recognizable target information; the target decision-making module is used for fusing the target information output by the signal processing module with photoelectric data, performing collision risk assessment by calculating collision time, and simultaneously realizing multi-target tracking and decision-making output; the man-machine interaction module is used for carrying out graded early warning according to the collision time calculated by the target decision module, and superposing a target three-dimensional identifier on a windshield by adopting a DLP projection technology and utilizing AR-HUD display based on a multi-target tracking result of the target decision module; according to the technical scheme provided by the invention, the defects that the low-altitude target cannot be accurately sensed in real time and the early warning information transmission efficiency is low due to the fact that the lithium battery pack cannot be combined can be effectively overcome.

The invention relates to an airborne flight correction evaluation method for a satellite-borne early warning radar, and the method comprises the steps: 1, carrying out the preprocessing of flight correction test data, obtaining the detection trace point number M, the radar operating distance RE, m, the signal-clutter-noise ratio margin SCNRE, m, the actual flight trace point number N of a target aircraft, and the RCS value sigma E, m, and m = 1, 2,... M in a flight correction test, and obtaining the detection trace point number M, the radar operating distance RE, m, the signal-clutter-noise ratio margin SCNRE, m, the actual flight trace point number N of the target aircraft, and the RCS value sigma E, m; 2, calculating the on-orbit detection distance RG, m of the satellite-borne early warning radar according to the radar operating distance RE, m; and step 3, carrying out balance conversion between the detection distance and the discovery probability to obtain an on-orbit detection distance R under the condition of a specific discovery probability p. According to the airborne flight correction evaluation method for the satellite-borne early warning radar, the problems of conversion between the clutter-noise ratio margin and the operating distance and between the discovery probability and the radar operating distance are comprehensively considered, flight correction test data information is fully mined, and the accuracy and credibility of calculation evaluation are improved.

The invention relates to a low-altitude radar, in particular to an all-digital array low-altitude early warning radar, which comprises a digital beam forming module, realizes rapid pointing adjustment of beams and simultaneous formation of multiple beams by digitally controlling the amplitude and phase of each array element in an antenna array, and supports omni-directional scanning of a low-altitude airspace and residence in a key area; the broadband signal processing module is used for generating a high-resolution linear frequency modulation LFM signal, completing pulse compression and Doppler processing of an echo signal, realizing distance-speed joint resolution and meeting a low-speed low-altitude target detection requirement; the self-adaptive interference suppression module is used for dynamically suppressing interference in a low-altitude environment and improving the signal-to-noise ratio of a target; the multi-target tracking and decision-making module is used for realizing multi-target state estimation and trajectory prediction and supporting threat level evaluation and alarm decision-making; according to the technical scheme provided by the invention, the defects that the low-speed low-altitude target is difficult to accurately monitor and the low-altitude safety prevention and control capability is insufficient in the prior art can be effectively overcome.

1. Name of this product: Rear Collision Warning Radar for Vehicle Roof. 2. Purpose of this design: For vehicle driving safety warning. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the technical field of radars, and discloses an omnidirectional detection early warning radar antenna unit comprising a pod main body which is internally provided with an antenna array unit which is provided with a plurality of antenna unit array planes used for transmitting radar signals and receiving echo signals; the servo units are arranged at the two ends of the antenna array unit in the axial direction and used for rotationally installing the antenna array unit in a pod body of the pod body and driving the antenna array unit to rotate around a shaft; the environmental control cooling unit is used for controlling environmental parameters of the pod main body; the antenna control unit, the antenna array unit and the servo unit are all in signal connection with the antenna control unit, and the environment control cooling unit and the antenna control unit are arranged in fairings at the two ends of the pod body. Therefore, the method has omnidirectional coverage detection capability, is flexible in direction and quick in response, can identify and track a plurality of targets at the same time, and is high in environmental adaptability.

In the case of low signal-to-noise ratio and lack of false target samples, it is difficult to accurately identify true and false targets, resulting in serious false alarm or missed alarm. In order to solve this problem, the application provides a false target jamming identification method of early warning radar based on fast-slow time domain joint features. Firstly, the radar echo is processed by pulse compression and coherent accumulation; then the peak search algorithm is used to determine the Doppler unit and distance channel of the true and false targets; after the true and false targets are truncated along the fast time dimension, the fast Fourier transform (FFT) is performed to extract the slow time domain joint features; the extracted unmarked true-false target feature mixed data set U and the labeled true target features are used to construct a joint data set, which is input into a support vector machine (SVM) for class prior probability estimation, and the average class prior probability is used to label the data set U to obtain the joint data set P+U; the joint data set is input into a two-channel feature fusion network for training and identification.

The invention provides a moving target multi-domain detection and positioning integrated method and system under a strong clutter background, and the method comprises the steps: obtaining multi-channel echo data of a space-based early warning radar, and carrying out the data rearrangement and distance dependence error compensation; constructing a first group of sub-channel data and a second group of sub-channel data; performing first-stage adaptive filtering processing on the first group of sub-channel data and the second group of sub-channel data to obtain a first-stage processing result; second-stage moving target detection is carried out on the first-stage processing result, and when a moving target is detected, a distance unit and a Doppler unit where the moving target is located are output; the angle of the moving target is calculated by using a monopulse and difference beam angle measurement principle; and finally, calculating the three-dimensional space position of the moving target in the geodetic coordinate system through the conversion relation between the radar coordinate system and the geodetic coordinate system. According to the invention, through a two-stage adaptive processing structure, integrated processing of moving target detection, angle estimation and positioning is effectively realized under a strong clutter background.

This invention provides an integrated method and system for multi-domain detection and localization of moving targets in strong clutter backgrounds. The method includes acquiring multi-channel echo data from a space-based early warning radar and performing data rearrangement and range-dependent error compensation; then constructing a first set of sub-channel data and a second set of sub-channel data; performing a first-level adaptive filtering process on both sets of sub-channel data to obtain the first-level processing result; performing a second-level moving target detection on the first-level processing result, outputting the range cell and Doppler cell when a moving target is detected; calculating the angle of the moving target using the single-pulse sum-difference beam angle measurement principle; and finally calculating the three-dimensional spatial position of the moving target in the geodetic coordinate system through the transformation relationship between the radar coordinate system and the geodetic coordinate system. This invention, through a two-level adaptive processing structure, effectively achieves integrated processing of moving target detection, angle estimation, and localization in strong clutter backgrounds.

The present application relates to a kind of low altitude ultra-low altitude target identification and elevation correction method, belong to radar data processing field.The present application is to overcome the problem that the precision of pitch angle is poor due to multipath effect when medium-range air-based early warning radar detects low altitude, ultra-low altitude target, using radar ranging result and topographic data and other information, the method for target elevation correction is carried out.The present application first uses high-precision geographic information to identify low altitude, ultra-low altitude target, then estimates the flight height of target from ground, uses target distance, target flight height (estimated value) from ground to correct radar pitch angle information, this method has practical significance for radar deployed on aircraft, airship and high mountain, detects medium, long distance negative elevation low altitude, ultra-low altitude flying target.

1. The name of the design product: radar jamming simulator. 2. The use of the design product: used for creating realistic jamming and target environment for air defense early warning radar in working frequency band. 3. The design points of the design product: the overall appearance shape of the product. 4. The picture or photo that can best show the design points of the design: perspective view 1.