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Proceedings Paper

Development of a real-time airborne SAR processor using a subaperture approach
Author(s): Rainer Spielbauer; Alberto Moreira; Winfried Poetzsch
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Paper Abstract

This paper presents the conceptual design, performance analysis and results of the high resolution real-time processor integrated in the experimental airborne SAR-system of the DLR. A Real-Time Subaperture (RTS) approach, which is suitable for airborne real-time SAR processing, was chosen for the hardware implementation. A new approach for high squint SAR processing is adopted, which consists basically of performing a 1D azimuth compression followed by a 2D convolution with a correction function. The main advantages of this approach are the simple hardware implementation, reduced computational and memory requirements and efficient time-domain correction of the range migration. Dedicated on- board hardware, which consists of high speed digital signal processors, programmable logic devices and other integrated circuits, was developed at DLR. The on-board hardware has been successfully tested. The results of the first flight tests in the area of Oberpfaffenhofen (Germany) are shown.

Paper Details

Date Published: 21 December 1994
PDF: 8 pages
Proc. SPIE 2316, SAR Data Processing for Remote Sensing, (21 December 1994); doi: 10.1117/12.197546
Show Author Affiliations
Rainer Spielbauer, German Aerospace Research Establishment (Germany)
Alberto Moreira, German Aerospace Research Establishment (Germany)
Winfried Poetzsch, German Aerospace Research Establishment (Germany)

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

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