Rapid super-resolution tracking system and method for automobile millimeter-wave radar

Abstract

The invention relates to the technical field of radars, in particular to a rapid super-resolution tracking method for an automobile millimeter-wave radar. The system comprises a planar array antenna,a radio frequency front end, a signal preprocessing module, a constant false alarm detection module, a target detection module, a super-resolution direction finding module and a tracking processing module. By means of the angle measurement and target detection tracking method of the system, the MIMO array radar can have the target super-resolution capacity on the basis of rapid direction finding,the requirement of the automobile millimeter wave radar for real-time performance is met, and the processing period is prolonged.

Description

technical field [0001] The invention relates to the technical field of radar, in particular to a fast super-resolution tracking method for automobile millimeter-wave radar. Background technique [0002] At present, array radar or TD-MIMO radar is mostly used in domestic and foreign automotive millimeter-wave radars. In array radar or MIMO radar, in order to make the radar have angular resolution, the method of spatial super-resolution is often used. Commonly used methods include multiple signal classification (MUSIC) method, various improved multiple signal classification methods, rotation invariant factor (Estimating signal parameters viarotational invariancetechniques, ESPRIT) method, etc. The main disadvantages of the spatial super-resolution algorithm are the large amount of data, the large amount of calculation, and the high complexity of the algorithm, which leads to a long time for direction finding, which cannot meet the real-time requirements of automotive millimete...

AI Technical Summary

Problems solved by technology

The main disadvantages of the spatial super-resolution algorithm are the large amount of data, the large amount of calculation, and the high complexity of the algorithm, resulting in too long direction finding time, which cannot meet the real-time requirements of automotive millimeter-wave radar, and seriously restricts the processing cycle.

[0003] Common array radar angle measurement solutions, such as the solutions of Analog Devices (ADI) and Texas Instruments (TI), are based on the digital beamforming (DBF) method of three-dimensional fast Fourier transform (3DFFT). Compared with the spatial super-resolution algorithm, although the computational complexity is reduced to a certain extent, the angle measurement accuracy is greatly affected by the number of FFT points, and there is no angle resolution ability.

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