Title :
Azimuth Pre-Processing in Real Time imaging of UWB SAR
Author :
Li Jianyang ; Chang Wenge ; Li Yueli
Author_Institution :
Sch. of Electron. Sci. & Eng., NUDT, Changsha, China
fDate :
Sept. 30 2009-Oct. 2 2009
Abstract :
Large data volume owing to the long aperture of UWB SAR is one of the main difficulties in real-time UWB SAR imaging. Azimuth pre-processing (AzPP) can reduce the data volume, which make real-time imaging of UWB SAR become possible. In this paper, we analyze the AzPP characteristics in UWB SAR, and design the lowpass FIR filter under Chebyshev method. Then a parallel structure of AzPP based on TS201 is proposed. The computational cost and storage are also analyzed. Finally, the imaging result processed with the parallel flow is presented.
Keywords :
FIR filters; low-pass filters; radar imaging; real-time systems; synthetic aperture radar; ultra wideband radar; AzPP; Chebyshev method; TS201; azimuth pre-processing; computational storage; lowpass FIR filter design; parallel structure; real-time UWB SAR imaging; Azimuth; Chebyshev approximation; Computational efficiency; Design methodology; Digital signal processing; Finite impulse response filter; Frequency; Passband; Radar polarimetry; Synthetic aperture radar;
Conference_Titel :
Radar Conference, 2009. EuRAD 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4747-3
