数据采集与处理2017，Vol.32Issue(4)：694-704,11.DOI:10.16337/j.1004-9037.2017.04.005
适用于宽带和窄带照射源的无源合成孔径雷达成像方法
Passive Synthetic Aperture Radar Imaging Methods for Wideband and Narrowband Illuminators of Opportunity
摘要
Abstract
Passive synthetic aperture radar imaging uses illuminators of opportunity and moving receivers to image the scene of interest and has good electronic antagonism.It can also reduce system cost,benefit to system miniaturization and ease frequency band congestion.In this paper,we present a unified theory for passive synthetic aperture radar imaging based on inverse scattering and microlocal analysis.It is suitable for airborne receivers flying along arbitrary flight trajectories and static or moving illuminators of opportunity.Two types of waveforms are considered:narrowband continuous-wave (CW) waveforms and wideband pulsed waveforms.Our theory results in two novel synthetic aperture imaging modalities.:Synthetic aperture hitchhiker (SAH) that uses wideband pulsed waveforms and Doppler synthetic aperture Hitchhiker (DSAH) that uses single-frequency or ultra-narrowband CW waveforms.First,we develop measurement models which are able to remove the transmitter-related terms in the phase of the correlated measurements.We use filtered backprojection (FBP) theory and microlocal analysis to develop approximate inversion formulas for SAH and DSAH.The inversion formulas involve backprojection of the correlated measurements onto iso-passive-range and iso-passive-Doppler contours for SAH and DSAH imaging,respectively.Detailed resolution analysis is given.Finally,we present numerical simulations to demonstrate our theoretical results.关键词
合成孔径雷达/无源雷达/成像/机会照射源/窄带Key words
synthetic aperture radar/passive radar/imaging/illuminators of opportunity/narrow band分类
信息技术与安全科学引用本文复制引用
汪玲,邓昊,王洁..适用于宽带和窄带照射源的无源合成孔径雷达成像方法[J].数据采集与处理,2017,32(4):694-704,11.基金项目
南京航空航天大学研究生创新基地(实验室)开放基金(kfjj20160402)资助项目 （实验室）
中央高校基本科研业务费专项基金资助项目 （）
航空科学基金(20132052035)资助项目. （20132052035）
