Reduction of phase errors arising from the approximations in the chirp scaling algorithm

Author

Mittermayer, Josef ; Moreira, Alberto ; Scheiber, Rolf

Author_Institution

Inst. fur Hochfrequenztech., Deutsches Zentrum fur Luft- & Raumfahrt, Oberpfaffenhofen, Germany

Volume

2

fYear

1998

fDate

6-10 Jul 1998

Firstpage

1180

Abstract

The paper presents a correction function which improves the phase accuracy in chirp scaling processing for squinted satellite borne SAR raw data with almost no increase of computational effort. The paper describes the phase errors introduced by chirp scaling processing. Simulations for a future L-band SAR system demonstrate the improvements caused by the correction function in the case of high Doppler centroid

Keywords

geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; synthetic aperture radar; L-band; UHF; approximation; chirp scaling algorithm; correction function; geophysical measurement technique; high Doppler centroid; land surface; phase accuracy; phase error reduction; phase errors; radar remote sensing; spaceborne radar; squint view; squinted satellite borne SAR; synthetic aperture radar; terrain mapping; Azimuth; Baseband; Chirp; Computational modeling; Error correction; Frequency; Hardware; Instruments; L-band; Satellites;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International

Conference_Location

Seattle, WA

Print_ISBN

0-7803-4403-0

Type

conf

DOI

10.1109/IGARSS.1998.699711

Filename

699711