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Global Navigation Satellite System (GNSS) provides opportunities for passive radar applications. This paper reports progress in space-surface bistatic synthetic aperture radar (SS-BiSAR) using Beidou-2 as transmitters of opportunity and a fixed ground-based receiver. Experiment is described and the obtained SAR image is presented and interpreted in detail. Results show that BiSAR using beidou-2 as...
Space-surface bistatic synthetic aperture radar (SS-BiSAR) for local area monitoring is presented based on BeiDou-2/Compass-2 as illuminator. The time and frequency synchronization and imaging processing are mainly investigated in this paper. In the proposed method, the BiSAR signal model containing time and frequency synchronization errors is firstly set up. In the following, a time and frequency...
The distributed coherent aperture radar (DCAR) consisting of several cooperating small aperture radars and a control center is proposed to replace the traditional large aperture radar, which is more easily to transport and less expensive to build. In this paper, the constitution and workflow of DCAR are described at first. In the following, the estimation methods of coherent parameters are introduced...
The distributed coherent aperture radar consists of several cooperating small aperture radars and a control center, which is proposed as a new technology to replace traditional large aperture radars for the next generation radar. The coherent performance of distributed coherent aperture radar is mainly affected by time synchronization. However, current time synchronization technology could not meet...
Doppler Centroid estimation is a crucial problem in Synthetic Aperture Radar(SAR). In Bistatic SAR (BiSAR) phase synchronization error and Doppler phase have nearly the same form; Doppler centroid can not be estimated in traditional way. A Doppler centroid estimation method is proposed for Space-Surface BiSAR system through phase-cancellation of Dual-channel direct signal. Through phase cancellation,...
Signal model has great significance to time and phase synchronization research in a bistatic radar. In prevenient research, time synchronization and phase synchronization are investigated separately and their coupling relation has not been investigated. This paper introduces a bistatic radar signal model according to system's composition and operation procedure. From the radar operation principle,...
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