Time synchronization based on the direct signal for spaceborne/airborne hybrid bistatic SAR

Author

Ming Sui ; Shunsheng Zhang ; Jiansong Ding

Author_Institution

Res. Inst. of Electron. Sci. & Technol., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2013

fDate

April 29 2013-May 3 2013

Firstpage

1

Lastpage

4

Abstract

Spaceborne/airborne hybrid bistatic SAR(SABSAR) has a special structure, its time synchronization system produces a great effect on the subsequent imaging processing. In view of the receiver, the impact of time synchronization errors is discussed in this paper, a time synchronization approach based on the direct signal is proposed. In this scenario, in order to compensate for time synchronization error in echo signal, it is necessary to extract the Doppler centroid from the direct signal timely. A novel method, which has small amount of computation, is put forward to estimate the Doppler centroid of the direct signal.

Keywords

airborne radar; spaceborne radar; synchronisation; synthetic aperture radar; Doppler centroid; SABSAR; direct signal; imaging processing; spaceborne airborne hybrid bistatic SAR; time synchronization approach; time synchronization error; Azimuth; Doppler effect; Imaging; Radar imaging; Receivers; Synchronization; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Conference (RADAR), 2013 IEEE

Conference_Location

Ottawa, ON

ISSN

1097-5659

Print_ISBN

978-1-4673-5792-0

Type

conf

DOI

10.1109/RADAR.2013.6586022

Filename

6586022