现代雷达2025，Vol.47Issue(11)：93-97,5.DOI:10.16592/j.cnki.1004-7859.2025070902
一种高速目标调频步进波形解调频接收时域合成处理方法
A Method for Receiving and Synthesizing Demodulated Stepped Frequency-modulated Waveforms of High-speed Target in Time-domain
李璋峰 1余继周 1张彦1
作者信息
- 1. 北京无线电测量研究所,北京 100854
- 折叠
摘要
Abstract
A stepped frequency-modulated waveform is a series of linear frequency-modulated pulse train with stepped carrier fre-quency,which achieve inter-pulse wideband high-resolution synthesis through inter-pulse coherent processing.The waveform can reduce the system's requirement for instantaneous bandwidth during transmission,and acquire wideband signals by consuming time resources.In this paper,the problem of wideband imaging for high-speed targets in aerospace using stepped frequency-modulated signals is focused,and an approach for receiving and synthesizing the demodulated stepped frequency-modulated waveforms from high-speed targets in time-domain is proposed.A mathematical model is established for receiving demodulated stepped frequency-modulated signals from high-speed targets,and the intra-pulse and inter-pulse phase terms caused by high-speed motion and their compensation methods are completely analyzed.The numerical simulation demonstrates that the method proposed in this paper can effectively eliminate the issue of defocused imaging caused by high-speed motion,and achieve broadband synthesis and high resolu-tion range profile of high-speed targets,featuring fewer constraints on waveform parameters and lower data volume.关键词
高速目标/调频步进波形/解调频接收体制/宽带时域合成Key words
high-speed target/frequency-modulated stepped waveform/system of receiving demodulation frequency/broadband synthesis in time-domain分类
电子信息工程引用本文复制引用
李璋峰,余继周,张彦..一种高速目标调频步进波形解调频接收时域合成处理方法[J].现代雷达,2025,47(11):93-97,5.
