Quick-look processing algorithm for spaceborne SAR with FIR filter

Tie-fei Zang; Teng Long

doi:10.1117/12.441428

25 September 2001 Quick-look processing algorithm for spaceborne SAR with FIR filter

Tie-fei Zang, Teng Long

Proceedings Volume 4548, Multispectral and Hyperspectral Image Acquisition and Processing; (2001) https://doi.org/10.1117/12.441428
Event: Multispectral Image Processing and Pattern Recognition, 2001, Wuhan, China

Abstract

Some applications of synthetic aperture radar (SAR) need SAR data processing in real time or near real time such as data evaluation and disaster monitoring. Two quick-look algorithms based on FIR filter using in spaceborne SAR are introduced in this paper. The raw data is preprocessed by FIR filter and subsampled with low sample rate, which can reduce data and computation amount to generate low resolution SAR image. The first algorithm designing a two-dimension filter prefilters the raw data and the other method uses two one-dimension filters in the procedure of processing the data with R-D algorithm. The performance of the two algorithms is analyzed. Finally, the raw data of RADARSAT is used to prove the algorithms. The result shows that the algorithms can be used in quick-look imaging effectively.

Citation Download Citation

Tie-fei Zang and Teng Long "Quick-look processing algorithm for spaceborne SAR with FIR filter", Proc. SPIE 4548, Multispectral and Hyperspectral Image Acquisition and Processing, (25 September 2001); https://doi.org/10.1117/12.441428

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KEYWORDS

Synthetic aperture radar

Filtering (signal processing)

Finite impulse response filters

Optical filters

Electronic filtering

Detection and tracking algorithms

Image filtering

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