Range-Doppler Sidelobe Suppression for Pulse-Diverse Waveforms

被引：15

作者：

Sun, Yinghao ^{[1
]}

Fan, Huayu ^{[1
]}

Mao, Erke ^{[1
]}

Liu, Quanhua ^{[1
]}

Long, Teng ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Informat & Elect, Key Lab Elect & Informat Technol Satellite Naviga, Minist Educ,Radar Res Lab, Beijing 100081, Peoples R China

来源：

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS | 2020年 / 56卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Doppler effect; Signal to noise ratio; Matched filters; Spaceborne radar; Doppler radar; Radar applications; Doppler-tuned matched filter (DTMF); range-Doppler sidelobes; range sidelobe modulation (RSM); two-dimensional mismatched filter (2-D MMF); waveform diversity; RADAR-COMMUNICATIONS; MISMATCHED FILTER; DESIGN;

D O I：

10.1109/TAES.2019.2954152

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Waveform diversity, which can be used to obtain synthetic bandwidth or mitigate range ambiguity, interference, and folded clutters, has attracted a great deal of attention in recent years. However, the range sidelobe modulation effect between agile pulses yields high range-Doppler sidelobes in pulse-Doppler (PD) radar applications, because of which traditional window functions or mismatched filters (MMFs) do not apply. In this article, a Doppler-tuned matched filter is used to equivalently obtain the PD result. Then, to mitigate the high range-Doppler sidelobes, a two-dimensional MMF (2-D MMF) is proposed, and the relevant signal-to-noise ratio (SNR) loss is deduced. A cyclic algorithm is also designed to calculate the 2-D MMF for suppressing sidelobes over desired range-Doppler regions with constrained SNR loss and mainlobe width. Several simulations and an experiment based on real measured data of an airborne platform are conducted to illustrate the effectiveness of the proposed 2-D MMF.

引用

页码：2835 / 2849

页数：15

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