Title :
Moving target focusing and parameter estimation based on ROI of multi-channel UWB SAR images
Author :
Chang Yu-lin ; Zhou Hong ; Huang Xiao-tao ; Zhou Zhi-min
Author_Institution :
Sch. of Electron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha
Abstract :
Image domain GMTI methods are very suitable for the multi-channel UWB SAR system. However, present image domain GMTI methods are mainly on the moving target detection and 1D range velocity estimation, but seldom refer to moving target focusing and 2D velocity/position parameter estimation. This paper proposes a new method for moving target focusing and parameter estimation based on the ROI of multi-channel UWB SAR images. As the consequent step after GMTD of image domain, the proposed method firstly focuses the moving target and estimates its relative velocity based on its ROI. Secondly, the method estimates the range velocity of the moving target based on its focused multi-channel images. Finally, the method estimates other parameters, including azimuth velocity, azimuth position and range position. The method has been proved to be valid based on multi-channel UWB SAR data.
Keywords :
parameter estimation; radar imaging; synthetic aperture radar; ultra wideband radar; 2D velocity-position parameter estimation; Image domain GMTI methods; ROI; azimuth position; azimuth velocity; moving target focusing; multichannel UWB SAR images; range position; Azimuth; Data mining; Directive antennas; Focusing; Geometry; Object detection; Parameter estimation; Radar antennas; Ultra wideband antennas; Yttrium;
Conference_Titel :
Signal Processing, 2008. ICSP 2008. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2178-7
Electronic_ISBN :
978-1-4244-2179-4
DOI :
10.1109/ICOSP.2008.4697664
