雷达科学与技术2026，Vol.24Issue(2)：171-176,184,7.DOI:10.3969/j.issn.1672-2337.2026.02.007
高分辨FMICW雷达回波信号虚假杂散抑制方法
Spurious Signal Suppression Method for High-Resolution FMICW Radar Echo Signals
摘要
Abstract
High-resolution frequency modulated interrupted continuous wave(FMICW)radar demonstrates signifi-cant potential in applications such as precise ranging,target identification,and environmental perception,due to its ex-ceptional long-range detection capabilities,low power consumption,and superior anti-interference performance.Never-theless,a key challenge in practical deployments lies in the effective suppression of spurious signals generated by the system and the avoidance of Doppler ambiguity,which are essential for realizing its high-resolution capabilities.The conventional method of using PRI variation to enhance range resolution has major flaws.A primary limitation is that it halves the maximum unambiguous Doppler velocity,leading to ambiguity in detecting fast-moving targets.Furthermore,the approach exhibits low data efficiency and poor spurious signal suppression in low-SNR conditions.These issues col-lectively degrade radar performance in practice.To address these issues,this study introduces an improved signal pro-cessing method.Our approach enhances the spurious suppression workflow and data utilization,effectively eliminating spurious signals while largely retaining the maximum unambiguous Doppler velocity.For the typical case of 100 sam-pling periods,the maximum unambiguous velocity is reduced by only about 1%.Importantly,this reduction decreases further as the number of sampling periods increases.This characteristic is crucial for maintaining the inherent measure-ment accuracy and system reliability of high-resolution FMICW radar.Comparative simulations with the baseline method confirm the effectiveness and superior performance of the proposed approach.关键词
FMICW雷达/多普勒模糊/杂散抑制/高分辨Key words
FMICW radar/Doppler ambiguity/spurious signals suppression/high-resolution分类
信息技术与安全科学引用本文复制引用
曾维贵,尚嵩,刘明刚,曹司磊..高分辨FMICW雷达回波信号虚假杂散抑制方法[J].雷达科学与技术,2026,24(2):171-176,184,7.基金项目
山东省"青创团队计划"(2022KJ085) （2022KJ085）
