Radar angle measurement method and radar
A technology of radar and angle measurement, which is applied in the field of radar, can solve the problems of accuracy impact and angle measurement accuracy limitation, and achieve the effect of reducing sampling time, improving resolution and high resolution
Pending Publication Date: 2021-03-26
WHST CO LTD
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[0004] In view of this, the embodiment of the present invention provides a radar angle measurement method and a radar to solve the problem that in the prior art, FFT angle measurement is used, and the accuracy is affected by the number of sampling points, so that the angle measurement accuracy is limited.
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[0029] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0030] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0031] refer to figure 1 , an embodiment of the present invention provides a radar angle measurement method, including:
[0032] Step S101: Obtain the target phase data corresponding to each receiving channel of the radar, and obtain the target spectrum according to t...
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The invention is suitable for the technical field of radars, and provides a radar angle measurement method and a radar; the radar angle measurement method comprises the steps: obtaining target phase data corresponding to each receiving channel of the radar, and obtaining a target frequency spectrum according to the target phase data corresponding to each receiving channel of the radar; determiningan interested interval in the target frequency spectrum; refining the frequency spectrum of the target frequency spectrum in the interested interval by adopting CZT transformation to obtain a final point numerical value corresponding to a peak value in the target frequency spectrum; and determining the angle of the target according to the final point value. According to the method, the region ofinterest of the frequency spectrum is refined, so that the resolution of the frequency spectrum is higher, and the calculation precision of the target angle is effectively improved. Meanwhile, the method is not influenced by the number of sampling points, and the sampling time and the operand of the system are reduced.
Description
technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a radar angle measuring method and radar. Background technique [0002] With the development of science and technology and the progress of society, radar has become an indispensable product in people's life. Radar is used to detect targets and output information in multiple dimensions such as distance, speed and angle of targets, among which angle information is an important parameter index. [0003] In the prior art, the array radar usually uses FFT (FastFourier Transformation, Fourier Transformation) to measure the angle according to the phase relationship between the receiving channels. The accuracy of this method is affected by the number of sampling points, the more sampling points, the higher the accuracy. However, as the number of sampling points increases, it will inevitably greatly increase the amount of computation and running time of the system, which will ...
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IPC IPC(8): G01S13/72G01S7/35G01S7/02
CPCG01S13/72G01S7/021G01S7/352
Inventor 江应怀秦屹
Owner WHST CO LTD