Optimal range and Doppler centroid estimation for a ScanSAR system

Author

Jin, Michael Y.

Author_Institution

Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA

Volume

34

Issue

2

fYear

1996

fDate

3/1/1996 12:00:00 AM

Firstpage

479

Lastpage

488

Abstract

This paper presents a new range and Doppler centroid estimation algorithm for a ScanSAR system. This algorithm is based on processing the image data in the overlapped region of two bursts of the same beam or adjacent beams. It leads to highly accurate radar pointing angles that are paramount to achieving good radiometric performance in ScanSAR imagery. The achievable accuracy is derived theoretically and verified by tests performed using SIR-C ScanSAR data and ERS data. This algorithm is computationally efficient and easy to implement. The proposed Doppler centroid estimation algorithm is also an excellent candidate for a strip mode SAR system

Keywords

Doppler radar; distance measurement; parameter estimation; radar imaging; remote sensing by radar; synthetic aperture radar; Doppler centroid estimation; SIR-C; ScanSAR system; image data; optimal range; radar pointing angles; strip mode SAR system; Azimuth; Bandwidth; Doppler radar; Frequency; Propulsion; Radar imaging; Radiometry; Space technology; Strips; Testing;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.485125

Filename

485125