NDLI: Space-Surface Bistatic Sar Using BeiDou-2 as Illuminator

Content Provider	IEEE Xplore Digital Library
Author	Weiming Tian Tian Zhang Cheng Hu Xiaopeng Yang Tao Zeng
Copyright Year	2014
Description	Author affiliation: Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China (Weiming Tian; Tian Zhang; Cheng Hu; Xiaopeng Yang; Tao Zeng)
Abstract	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 synchronization method is proposed to deal with the absence of posterior ephemeris which is a special issue of BeiDou-2 system. Then, a corresponding back-projection algorithm is deduced to deal with curved trajectory of satellite in long synthetic time. In the time and frequency synchronization method, direct signal from the satellite is used to estimate time delay and phase history and extract navigation message to acquire time and ephemeris information. The synchronization errors are estimated based on the time delay, phase history and the calculated slant range history. In the imaging processing, the signals along sum of bistatic slant ranges are phase compensated and accumulated to form the final focused image. SS-BiSAR experiments using Beidou-2 as illuminators are carried out to validate the proposed methods. The feasibility of SS-BiSAR using BeiDou-2 as transmitter is demonstrated by the imaging results of both a transponder and natural scene.
Starting Page	118
Ending Page	122
File Size	621562
Page Count	5
File Format	PDF
ISBN	9781479962396
DOI	10.1109/CIT.2014.134
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-11
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellites SS-BiSAR Imaging GNSS Receivers synchronization Synchronization History Frequency synchronization imaging Synthetic aperture radar BeiDou-2/COMPASS-2
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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