Chirp radar clutter detection method, target detection method and radar
CN117518113BActive Publication Date: 2026-08-28WHST CO LTD
Patent Information
- Application Number
- CN202311367888.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-20
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2043-10-20
AI Technical Summary
Technical Problem
[0005]本申请实施例提供了一种步进频雷达的杂波检测方法、目标检测方法及雷达，以解决现有杂波带检测方案无法满足步进频雷达的杂波带检测处理的问题
Benefits of technology
[0055]本申请实施例提供一种步进频雷达的杂波检测方法、目标检测方法及雷达，通过获取在步进频雷达载体运动过程中步进频雷达的回波数据，根据回波数据生成RD图，并获取步进频雷达向目标物体发送的发射信号的波形参数和步进频雷达载体的行驶速度，根据波形参数和行驶速度，在RD图中确定杂波带中心线上各点的距离索引和多普勒索引，以综合发射信号的波形参数和步进频雷达载体的行驶速度提升杂波带中心的精确度，初步确定杂波带在RD图中的分布位置，适应步进频雷达的杂波检测。之后，综合行驶速度和RD图中多普勒维的展宽确定杂波带在多普勒维的宽度范围，以降低杂波带在多普勒维的宽度估计误差。本方案综合步进频雷达向目标物体发送的发射信号的波形参数、步进频雷达载体的行驶速度和RD图中多普勒维的展宽，确定对应杂波带中心线上各点的距离索引、多普勒索引和杂波带在多普勒维的宽度范围，充分考虑步进频雷达载体的行驶速度对杂波带位置和杂波带宽度的影响，提升确定杂波带检测的精确度，从而基于杂波带检测结果提升杂波的抑制效果和实现目标的精确检测。
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Figure CN117518113B_ABST
Abstract
The application provides a clutter detection method, a target detection method and a radar of a stepped frequency radar. The clutter detection method of the stepped frequency radar comprises: obtaining echo data of the stepped frequency radar in a motion process of a carrier of the stepped frequency radar, and generating a range Doppler (RD) map according to the echo data; obtaining a waveform parameter of a transmission signal sent by the stepped frequency radar to a target object and a driving speed of the carrier of the stepped frequency radar; determining a range index and a Doppler index of each point on a center line of a clutter band in the RD map according to the waveform parameter and the driving speed, and determining a width range of the clutter band in a Doppler frequency according to the driving speed and a spread of the Doppler frequency in the RD map. The scheme fully considers the influence of the driving speed of the carrier of the stepped frequency radar on the position and the width of the clutter band, improves the accuracy of determining the clutter band detection, and thus improves the suppression effect of the clutter and realizes the accurate detection of the target based on the detection result of the clutter band.
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Citation Information
Patent Citations
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