Relationship between antenna pointing stability and spaceborne ScanSAR scalloping calibration

Author

Wei, Jie

Author_Institution

Beijing Jiaotong Univ., Beijing

fYear

2007

fDate

23-28 July 2007

Firstpage

482

Lastpage

485

Abstract

Based on uniform weighting antenna model, the Doppler center frequency error from instability of antenna pointing is derived in detail for spaceborne scanning synthetic aperture radar (ScanSAR) system. And the effects of Doppler center frequency error on image radiometric correction are analyzed. The basic precision of the antenna pointing stability is present for the offsets of ScanSAR image radiometric correction, which is verified by simulations.

Keywords

Doppler effect; geophysical signal processing; geophysical techniques; radiometry; remote sensing by radar; satellite antennas; spaceborne radar; synthetic aperture radar; Doppler center frequency error; antenna pointing stability; image radiometric correction; spaceborne ScanSAR scalloping calibration; spaceborne scanning synthetic aperture radar system; uniform weighting antenna model; Aperture antennas; Azimuth; Calibration; Doppler radar; Frequency; Radar antennas; Radiometry; Signal processing; Spaceborne radar; Stability; Doppler centroid frequency; radar; radiometric correction; stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International

Conference_Location

Barcelona

Print_ISBN

978-1-4244-1211-2

Electronic_ISBN

978-1-4244-1212-9

Type

conf

DOI

10.1109/IGARSS.2007.4422836

Filename

4422836