Title :
High-resolution FM stepped-frequency miniSAR system
Author :
Weiming Tian ; Di Yao ; Tao Zeng
Author_Institution :
Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China
Abstract :
System design technique of high-resolution FM stepped-frequency (FM-SF) SAR system is investigated in this paper. High-resolution SAR system is implemented through narrow sub-band, multi stepped-frequency and high pulse repetition frequency technique. Double phased lock loops operate alternatively and generate stepped local oscillator. Non-linear phase error and starting sampling range error are estimated and compensated to improve the performance of pulse compression result. System performance is verified through airborne experiment and can satisfy high resolution imaging requirement.
Keywords :
FM radar; image resolution; phase locked loops; phase locked oscillators; radar imaging; radar resolution; synthetic aperture radar; FM-SF SAR system; double-phased lock loops; high-pulse repetition frequency technique; high-resolution FM stepped-frequency miniSAR system; high-resolution imaging requirement; multistepped-frequency technique; narrow-subband technique; nonlinear phase error; pulse compression; sampling range error; stepped local oscillator; system design technique; Stepped-frequency SAR; error compensation; miniaturized SAR;
Conference_Titel :
Radar Conference 2013, IET International
Conference_Location :
Xi´an
Electronic_ISBN :
978-1-84919-603-1
DOI :
10.1049/cp.2013.0174
