VLSI architecture for SAR data compression

As a step towards a real-time signal aperture radar (SAR) correlator, custom very large scale integration (VLSI) architectures are developed. Considering the extremely short word length of the data, we derive three architectures with massive parallelism in bit space. Unlike frequency methods, no. degradation is introduced during convolution. Optimized for time and space, they are highly suited to VLSI implementation, and a small architecture with 80 taps operating at 10 MHz has been built using an FPGA.

[1]  Michael Y. Jin,et al.  A SAR correlation algorithm which accommodates large-range migration , 1984, IEEE Transactions on Geoscience and Remote Sensing.

[2]  Søren Nørvang Madsen,et al.  The Danish SAR system: design and initial tests , 1991, IEEE Trans. Geosci. Remote. Sens..

[3]  R. N. McDonough,et al.  Image formation from spaceborne synthetic aperture radar signals , 1985 .

[4]  David A. Patterson,et al.  Computer Architecture: A Quantitative Approach , 1969 .

[5]  Robert E. Jenkins,et al.  Synthetic Aperture Processing with Limited Storage and Presumming , 1973, IEEE Transactions on Aerospace and Electronic Systems.

[6]  Tat Soon Yeo,et al.  Development of a SAR digital system , 1999 .

[7]  Ron Kwok,et al.  Block adaptive quantization of Magellan SAR data , 1989 .

[8]  Mehrdad Soumekh,et al.  Synthetic Aperture Radar Signal Processing with MATLAB Algorithms , 1999 .

[9]  Ian G. Cumming,et al.  Synthetic aperture radar signal data compression using block adaptive quantization , 1994 .

[10]  Riccardo Lanari.  A new method for the compensation of the SAR range cell migration based on the chirp z-transform , 1995, IEEE Trans. Geosci. Remote. Sens..

[11]  T. J. Robnett,et al.  A high-speed synthetic aperture radar processor , 1992, [Proceedings] ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[12]  K. Eldhuset.  A new fourth-order processing algorithm for spaceborne SAR , 1998 .

[13]  John C. Curlander,et al.  Synthetic Aperture Radar: Systems and Signal Processing , 1991 .

[14]  Giorgio Franceschetti,et al.  A SAR processor based on two-dimensional FFT codes , 1990 .

[15]  Riccardo Lanari,et al.  A short discussion on the exact compensation of the SAR range-dependent range cell migration effect , 1997, IEEE Trans. Geosci. Remote. Sens..