Range Pre-filter Realization of Ground Real-time Imaging processor for Spaceborne SAR

Under the condition of meeting resolution, the SAR real-time imaging processor can satisfy the demands of the processing band through pre-filter and down-sample. Because of the special position in the signal processor, ranger pre-filter needs very high operation speed and better response performance...

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Bibliographic Details
Main Authors: Xiao-Bing Ma, Yu-Li Xia, Ping Zhang
Format: Conference Proceeding
Language:English
Subjects:
Algorithm design and analysis
Azimuth
Bandwidth
Digital signal processing
Displays
Field programmable gate arrays
Finite impulse response filter
Frequency estimation
Signal resolution
Signal sampling
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Summary:Under the condition of meeting resolution, the SAR real-time imaging processor can satisfy the demands of the processing band through pre-filter and down-sample. Because of the special position in the signal processor, ranger pre-filter needs very high operation speed and better response performance. The principles of pre-filter and the methods to achieve the pre-filter are introduced in this paper. The study, focusing on the difference between ADSP-TS101S and XC4VSX35. FPGA in implementing the high performance filter, results that FPGA has the advantage over DSP. In conclusion, the results of the practical experiments are given to illuminate the rationality of the design
DOI:10.1109/ICR.2006.343163