Title :
Efficient detection and ground mapping of selected moving targets using SAR raw-data
Author :
Marques, Paulo A C ; Dias, Jose M B
Author_Institution :
Dept. de Engenharia Electrotecnica e das Comunicacoes, Inst. Superior de Engenharia de Lisboa, Portugal
Abstract :
This work addresses moving targets detection and imaging using airborne SAR data. Targets are selected according to user-defined radial velocity and direction. The computational burden is drastically reduced because azimuth compression is done only for ranges with a positive moving target indication. Furthermore, the knowledge of the velocity sign allows to tune the detection and focusing of moving targets with higher SNR than the usual methods. Range migration is easily tackled because radial velocity is known, enabling the correct compression filter design
Keywords :
Doppler radar; airborne radar; image motion analysis; radar detection; radar imaging; synthetic aperture radar; SAR raw-data; airborne SAR; azimuth compression; compression filter design; computational burden; ground mapping; imaging; moving targets detection; range migration; selected moving targets; velocity sign; Azimuth; Clutter; Doppler shift; Equations; Filters; Focusing; Geometry; Image coding; Object detection; Telecommunication computing;
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.1999.773559