access icon openaccess Efficiency balanced matrix transpose method for sliding spotlight SAR imaging processing

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 25/02/2019, Accepted 08/05/2019, Published 13/08/2019

Matrix transposition is a very critical operation in synthetic aperture radar (SAR) imaging systems. This study presents an improved corner turning memory solution for real-time SAR imaging processing. Based on the sub-matrix three-dimensional mapping method, the efficiency of matrix transposing is greatly increased. However, in sliding spotlight mode, a novel SAR imaging mode, the amount of raw data is increased too large to directly use the above method. In this study, a joint address mapping strategy for two pieces of double data rate 3 synchronous dynamic random-access memory is used to meet the needs of the amount of data and make up for the lack of original method. The experimental results show that this method can get an improved and balanced two-dimensional access efficiency for sliding spotlight mode SAR imaging processing.

Inspec keywords: DRAM chips; radar imaging; synthetic aperture radar

Other keywords: memory solution; double data rate 3 synchronous dynamic random-access memory; efficiency balanced matrix transpose method; improved corner; spotlight SAR imaging processing; synthetic aperture radar imaging systems; matrix transposing; matrix transposition; joint address mapping strategy; critical operation; two-dimensional access efficiency; raw data; sub-matrix three-dimensional mapping method; spotlight mode SAR imaging processing; real-time SAR imaging processing; novel SAR imaging mode

Subjects: Semiconductor storage; Radar equipment, systems and applications; Optical, image and video signal processing; Memory circuits

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