Title :
Post-doppler space-time filtering for suppressing moving target signals in multi-channel SAR data
Author_Institution :
FGAN-FHR, Wachtberg-Werthhoven
Abstract :
Synthetic aperture radar (SAR) as a method for ground imaging by using a single antenna or a sensor array has widely found attraction for remote sensing applications and reconnaissance tasks. Independent of the particular sensor but inherent to the SAR processing, moving objects in the observed scene will be imaged at wrong positions and can appear in a smeared fashion. To avoid these disturbing artifacts in the image, a joint spatial-spectral filtering approach is proposed in this paper that allows to suppress signal contributions from moving targets in multi-channel radar data. Results obtained with experimental data from an airborne system show the potential for a practical application of the presented method.
Keywords :
Doppler shift; antennas; filtering theory; radar imaging; remote sensing by radar; synthetic aperture radar; SAR processing; airborne system; ground imaging; joint spatial-spectral filtering approach; moving target signals suppression; multichannel SAR data; post-Doppler space-time filtering; remote sensing applications; sensor array; single antenna; synthetic aperture radar; Antenna arrays; Aperture antennas; Filtering; Image sensors; Layout; Radar antennas; Reconnaissance; Remote sensing; Sensor arrays; Synthetic aperture radar;
Conference_Titel :
Sensor Array and Multichannel Signal Processing Workshop, 2008. SAM 2008. 5th IEEE
Conference_Location :
Darmstadt
Print_ISBN :
978-1-4244-2240-1
Electronic_ISBN :
978-1-4244-2241-8
DOI :
10.1109/SAM.2008.4606914
