Title :
Image Formation Algorithm for the Implementation of Circular Scanning SAR
Author :
Sun, Bing ; Zhou, Yinqing ; Li, Tianchi ; Chen, Jie
Author_Institution :
Sch. of Electron. & Inf. Eng., Beijing Univ. of Aeronaut. & Astronaut.
Abstract :
This paper presented circular scanning synthetic aperture radar (SAR) based on circular scanning antenna. The work principle of this scanning radar was described. The variations of synthetic, aperture time, azimuth resolution and time-bandwidth product were analyzed. Also a focused imaging algorithm instead of DBS was used to form high resolution image. This algorithm based on extended chirp scaling (ECS) could compensate phase errors with high precision. The versatile image formation flow was composed of burst imaging, geometric correction and mosaicking. The computer simulation results confirmed that the versatile image formation flow could be used to image precisely for circular scanning SAR
Keywords :
error compensation; image resolution; image segmentation; radar imaging; radar resolution; scanning antennas; synthetic aperture radar; ECS; SAR; burst imaging; circular scanning antenna; circular scanning synthetic aperture radar; extended chirp scaling; focused imaging algorithm; geometric correction; image formation algorithm; image mosaicking; image resolution; phase error compensation; time-bandwidth product; Aperture antennas; Azimuth; Chirp; Focusing; High-resolution imaging; Image resolution; Radar antennas; Radar imaging; Satellite broadcasting; Synthetic aperture radar; SAR; circular scanning; data processing; focused imaging algorithm;
Conference_Titel :
Radar, 2006. CIE '06. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9582-4
Electronic_ISBN :
0-7803-9583-2
DOI :
10.1109/ICR.2006.343536
