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Proceedings Paper

Design of a high-quality real-time processor for airborne SAR data
Author(s): Gordon C. Pryde; K. D. R. Beckett; L. M. Delves; Christopher John Oliver; Richard Geoffrey White
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Paper Abstract

This paper outlines the principles behind the software architecture design for a real-time processor for airborne SAR data. This processor is implemented on an MIMD parallel computer (the Meiko CS1) using a point-to-point message passing system. The processing algorithms are the result of research by the DRA, Malvern, and are capable of yielding focused, undistorted SAR imagery. Processing functions considered include: initial motion compensation (based on accelerometer data), autofucus with phase correction, and azimuth focusing. Real time processing rates of about 10 MBytes/s are now routinely achieved. We indicate the compromises between processor power, available local memory and communications bandwidth needed to achieve real-time operation. A recent development of the SAR processor has been the addition of a generic post-processing module to allow image interpretation algorithms to operate on the imagery as it is produced. Real-time SAR segmentation has been demonstrated using this facility; ports of other algorithms are planned.

Paper Details

Date Published: 21 December 1994
PDF: 12 pages
Proc. SPIE 2316, SAR Data Processing for Remote Sensing, (21 December 1994); doi: 10.1117/12.197545
Show Author Affiliations
Gordon C. Pryde, N. A. Software Ltd. (United Kingdom)
K. D. R. Beckett, N. A. Software Ltd. (United Kingdom)
L. M. Delves, Univ. of Liverpool (United Kingdom)
Christopher John Oliver, Defence Research Agency Malvern (United Kingdom)
Richard Geoffrey White, Defence Research Agency Malvern (United Kingdom)


Published in SPIE Proceedings Vol. 2316:
SAR Data Processing for Remote Sensing
Giorgio Franceschetti, Editor(s)

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