Title :
SAR with ultra-high range resolution using synthetic bandwidth
Author_Institution :
Forschungsgesellschaft fur Angewandte Naturwissenschaften, Wachtberg, Germany
Abstract :
Subsequent received pulses with different centre frequencies can be combined after A/D conversion to one single long response with very high bandwidth. This method can be described as synthetic bandwidth. R. T. Lord et al. (1997) present the processing steps which have to be implemented in the case of transmitted FM pulses with identical chirprate. However, relative motion between the radar and the target has not been considered in these papers. This paper presents two new methods to compress signals with synthetic bandwidth compensating for motion up to different grades
Keywords :
geophysical techniques; radar signal processing; remote sensing by radar; synthetic aperture radar; terrain mapping; A/D conversion; FM pulse; SAR; centre frequencies; geophysical measurement technique; land surface; processing steps; radar remote sensing; signal compression; single long response; subsequent received pulse; synthetic aperture radar; synthetic bandwidth; terrain mapping; ultra-high range resolution; very high bandwidth; Azimuth; Bandwidth; Chirp; Convolution; Frequency conversion; Frequency synthesizers; Radar; Sampling methods; Signal resolution; Signal synthesis;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
DOI :
10.1109/IGARSS.1999.772084
