Title :
A novel synthetic bandwidth method in BP image space for stepped-frequency SAR
Author :
Hu Kebin ; Zhang Xiaoling ; Wang Hui ; Shi Jun
Author_Institution :
Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The stepped-frequency synthetic aperture radar (SFSAR) has been widely used to obtain high-range-resolution image. Combining the sub-band echoes to form a wideband signal is the most important technique for SFSAR. But the space-variant range difference of the pulses in a cluster impacts the synthetic image quality seriously. In this paper, we propose a novel synthetic bandwidth method based on the back projection (BP) imaging. This method can avoid the complex compensation process for the range difference and might improve the use ratio of bandwidth. The simulation results validate the effectiveness and advantages of this method.
Keywords :
radar imaging; synthetic aperture radar; BP image space; SFSAR; back projection imaging; complex compensation process; high-range-resolution image; space-variant range difference; stepped-frequency SAR; stepped-frequency synthetic aperture radar; sub-band echoes; synthetic bandwidth method; synthetic image quality; wideband signal; Chirp; Frequency-domain analysis; Image resolution; Synthetic aperture radar; Wideband; high resolution; stepped-frequency SAR; synthetic bandwidth;
Conference_Titel :
Radar Conference, 2014 IEEE
Conference_Location :
Cincinnati, OH
Print_ISBN :
978-1-4799-2034-1
DOI :
10.1109/RADAR.2014.6875593
