Strong interference suppression system of millimeter wave frequency modulation continuous wave radar and suppression method thereof

A frequency-modulated continuous wave, strong interference technology, used in radio wave measurement systems, climate sustainability, instruments, etc., can solve problems such as insufficient radar anti-interference ability

Active Publication Date: 2021-12-21
NANTONG UNIVERSITY
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical bottleneck problem of insufficient anti-jamming capability of existing automotive radar

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  • Strong interference suppression system of millimeter wave frequency modulation continuous wave radar and suppression method thereof
  • Strong interference suppression system of millimeter wave frequency modulation continuous wave radar and suppression method thereof
  • Strong interference suppression system of millimeter wave frequency modulation continuous wave radar and suppression method thereof

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Embodiment Construction

[0030] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific examples.

[0031] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways than described here. Therefore, the present invention is not limited to the specific embodiments disclosed below. limit.

[0032] A strong interference suppression system for millimeter wave FM continuous wave radar, applied to radar digital intermediate frequency sampling receiver, which includes interference envelope detection unit and interference suppression unit, wherein the interference envelope detection unit is used for radar digital intermediate frequency sampling The radar echoes received in the receiver are counted and analyzed, and when there is interference in the rad...

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Abstract

The invention provides a strong interference suppression system of a millimeter wave frequency modulation continuous wave radar and a suppression method thereof, and relates to the technical field of new energy automobiles and new-generation information. The strong interference suppression system comprises an interference envelope detection unit and an interference suppression unit, wherein the interference envelope detection unit comprises a low-pass filtering unit, a signal statistical analysis unit and an interference signal positioning unit, the low-pass filtering unit is used for processing radar echoes, and the signal statistical analysis unit is used for counting and judging whether strong interference exists in the radar echoes or not; the interference signal positioning unit is used for positioning an interference position in a radar echo, and the interference suppression signal unit is used for forming an echo signal with missing data in an interference signal area and recovering the missing data through an echo recovery algorithm. Whether the current radar echo has interference or not is judged through the interference envelope detection unit, processing is not carried out when no interference exists, calculation complexity of the suppression method is reduced, and real-time signal information processing efficiency is improved.

Description

technical field [0001] The invention relates to the fields of new energy vehicles and new generation information technology, in particular to a strong interference suppression system and suppression method for millimeter-wave FM continuous wave radar. Background technique [0002] This type of radar has been widely used because of its wide operating bandwidth, high precision in distance measurement, speed measurement and angle measurement, small size, low cost, and reliable and stable operation especially at night and in bad weather conditions. It is used in the vehicle's active collision avoidance, assisted driving system and unmanned driving system. The wide range of market applications increases the density of radars working in the same area at the same time, and the radar emission signal will be a strong source of interference to another adjacent radar. Although there have been some researches at home and abroad, some studies have focused on non-FM continuous wave radar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/36G01S7/41
CPCG01S7/36G01S7/41Y02A90/10
Inventor 许致火汪月霞
Owner NANTONG UNIVERSITY
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