A Target Detection Method for Small Rotor UAV Based on Multi-Pulse Accumulation
A technology of unmanned rotor and target detection, which is applied in the field of UAV detection, can solve the problems of weak radar echo signal and complex clutter background, and achieve the effects of improving accuracy, solving complex clutter background, and reducing costs
Active Publication Date: 2022-06-17
SOUTHWEST PETROLEUM UNIV
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[0011] The present invention provides a small rotor UAV target detection method based on multi-pulse accumulation, which solves the problems of weak radar echo signal and complex clutter background, can increase the output SNR of UAV targets, reduce costs, and improve flexibility Enhanced portability and improved radar system detection capabilities for small rotor UAV targets
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[0062] The above content of the present invention will be further described in detail below with reference to the specific implementation of the embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following examples. Without departing from the above-mentioned technical idea of the present invention, various substitutions or changes made according to common technical knowledge in the art and conventional methods should all be included in the scope of the present invention.
[0063] like figure 1 The flow chart of the multi-frame data point trace accumulation realization of the present invention is shown, including:
[0064] A. The radar transmits a chirp signal, and after down-conversion and pulse compression, the coherent accumulation of single-frame data is performed to obtain the coherent accumulation result of the i-th frame of data C. i ;
[0065] B. Using the CFAR method, the d...
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The present invention relates to a kind of target detection method of small-sized rotor UAV based on multi-pulse accumulation. Firstly, the radar receiving data is divided into N frames, and each frame has M pulses; The distance unit migration caused by this method realizes the coherent accumulation of single-frame data target energy, and uses CFAR to filter out the background noise to obtain the target point trace information; finally, combined with the established state transition equation, the detection-before-tracking method is used to realize the small rotor UAV Accumulate target traces and suppress clutter, thereby realizing target detection and tracking of small rotor UAVs; the invention can solve problems such as weak radar echo signals and complex clutter backgrounds; by increasing the output SNR of UAV targets, the cost can be reduced , Improve flexibility and portability, and improve the radar system's ability to detect targets for small rotor drones.
Description
technical field [0001] The invention relates to the technical field of unmanned aerial vehicle detection, in particular to a small rotor unmanned aerial vehicle target detection method based on multi-pulse accumulation. Background technique [0002] With the development of drone technology, drones are becoming more and more popular, and due to the development of modern technology, drones are developing towards miniaturization and miniaturization. [0003] In real life, micro drones are becoming more and more popular. Due to their small size, simple operation, low flight height, and many ground objects, micro drones are difficult to detect by previous detection methods. [0004] At present, there is an urgent need to master effective detection and detection methods to solve the problem of supervision and control of UAVs and ensure the safety of low-altitude airspace. [0005] There are five main methods of target detection and discovery for small rotor UAVs, as follows: [...
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IPC IPC(8): G01S7/41
CPCG01S7/414
Inventor 肖国清方鑫葛亮陈春燕陈春林
Owner SOUTHWEST PETROLEUM UNIV