Title :
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
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;
Conference_Titel :
Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4403-0
DOI :
10.1109/IGARSS.1998.699711
