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

Author

Ming Sui ; Shunsheng Zhang ; Jiansong Ding

Author_Institution

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

Volume

2

fYear

2013

fDate

15-17 Nov. 2013

Firstpage

226

Lastpage

229

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; radar signal processing; spaceborne radar; synchronisation; synthetic aperture radar; Doppler centroid; SABSAR; direct signal; echo signal; spaceborne/airborne hybrid bistatic SAR; subsequent imaging processing; time synchronization errors; Azimuth; Delays; Doppler effect; Imaging; Receivers; Synchronization; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems (ICCCAS), 2013 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4799-3050-0

Type

conf

DOI

10.1109/ICCCAS.2013.6765324

Filename

6765324