Title :
Motion correction in synthetic aperture radar using subaperture techniques
Author :
Zheng, Zhonghou ; Liu, Xingzhao ; Zhou, Zhixin
Author_Institution :
Dept. of EE, Jiao Tong Univ., Shanghai, China
Abstract :
Motion correction is required in airborne synthetic aperture radar to generate high quality images. The paper proposes a new motion compensation method based on subaperture techniques which better approximates the space variant of the compensation kernel. Motion errors are averaged and added to the system parameters. Only residual errors remain to be corrected. The subaperture images are compensated independently and added together coherently in the final step to generate a fine resolution image. Simulation results show that the new method outperforms full aperture compensation methods, especially in the case of large motion errors.
Keywords :
airborne radar; approximation theory; motion compensation; radar imaging; radar resolution; synthetic aperture radar; airborne radar; airborne synthetic aperture radar; fine resolution image; motion compensation; motion correction; motion errors; radar images; subaperture techniques; Aircraft; Azimuth; Error correction; Geometry; History; Image resolution; Motion compensation; Radar tracking; Signal resolution; Synthetic aperture radar;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
Print_ISBN :
0-7803-8484-9
DOI :
10.1109/ICASSP.2004.1326196