Title :
Analysis of range ambiguity suppression in SAR by up and down chirp modulation for point and distributed targets
Author :
Mittermayer, Josef ; Martínez, José Márquez
Author_Institution :
Deutsches Zentrum fur Luft- und Raumfahrt, Oberpfaffenhofen, Germany
Abstract :
This Paper provides a demonstrative derivation of the effect of up and down chirp modulation on point and extended target signals. Analysis has been performed with respect to signal amplitude, signal extension, modulation rate and phase behavior. The suppression of "point target" range ambiguities is investigated for the a possible TerraSAR-X parameter setting. Extended targets have been simulated and filtered. A Range-Ambiguity Simulator is under development which is based on airborne X-band data from the Experimental SAR (E-SAR) of DLR. The simulator concept is presented.
Keywords :
airborne radar; chirp modulation; geophysical signal processing; geophysical techniques; radar signal processing; remote sensing by radar; synthetic aperture radar; DLR; SAR; TerraSAR-X parameter setting; airborne X-band data; chirp modulation; distributed targets; phase properties; point target; range ambiguity suppression; signal amplitude; signal extension; target signals; Amplitude modulation; Analytical models; Chirp modulation; Filtering; Filters; Frequency domain analysis; Performance analysis; Phase modulation; Pulse modulation; Signal analysis;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2003. IGARSS '03. Proceedings. 2003 IEEE International
Print_ISBN :
0-7803-7929-2
DOI :
10.1109/IGARSS.2003.1295367
