A frequency synchronization method for hybrid bistaitc SAR using direct path signal

Author

Peng, Zhou ; YiMing, Pi ; Yongshou, Dai

Author_Institution

Sch. of Inf. & Control Eng., China Univ. of Pet., Dongying, China

fYear

2010

fDate

6-8 Dec. 2010

Firstpage

1

Lastpage

4

Abstract

We propose a frequency synchronization method for hybrid bi-static synthetic aperture radar (SAR), which denotes a SAR system with a spaceborne illuminator and an airborne receiver. Due to the high altitude difference, the method based on extracting the direct path signal is employed. The mathematical model to compute the frequency offset between the two sides´ oscillators is given. Among the model, a novel method for estimating the Doppler centroid for hybrid bi-static SAR is proposed. Error analysis is carried out, and the result indicates that under normal signal to noise ratio and frequency stability level the estimation error is within the acceptable value. A simulation was performed and the result shows that the imaging result is favorable after compensation.

Keywords

Doppler shift; airborne radar; frequency stability; oscillators; radar imaging; synchronisation; synthetic aperture radar; Doppler centroid estimation; airborne receiver; direct path signal extraction; estimation error; frequency offset; frequency stability level; frequency synchronization method; hybrid bistaitc SAR; hybrid bistatic synthetic aperture radar; mathematical model; side oscillators; signal to noise ratio; Atmospheric modeling; Educational institutions; Frequency synchronization; Radio frequency; Synchronization;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems (ISPACS), 2010 International Symposium on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-7369-4

Type

conf

DOI

10.1109/ISPACS.2010.5704747

Filename

5704747