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Proceedings Paper

Multi-static MIMO along track interferometry (ATI)
Author(s): Chad Knight; Ross Deming; Jake Gunther
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Paper Abstract

Along-track interferometry (ATI) has the ability to generate high-quality synthetic aperture radar (SAR) images and concurrently detect and estimate the positions of ground moving target indicators (GMTI) with moderate processing requirements. This paper focuses on several different ATI system configurations, with an emphasis on low-cost configurations employing no active electronic scanned array (AESA). The objective system has two transmit phase centers and four receive phase centers and supports agile adaptive radar behavior. The advantages of multistatic, multiple input multiple output (MIMO) ATI system configurations are explored. The two transmit phase centers can employ a ping-pong configuration to provide the multistatic behavior. For example, they can toggle between an up and down linear frequency modulated (LFM) waveform every other pulse. The four receive apertures are considered in simple linear spatial configurations. Simulated examples are examined to understand the trade space and verify the expected results. Finally, actual results are collected with the Space Dynamics Laboratorys (SDL) FlexSAR system in diverse configurations. The theory, as well as the simulated and actual SAR results, are presented and discussed.

Paper Details

Date Published: 14 May 2016
PDF: 9 pages
Proc. SPIE 9843, Algorithms for Synthetic Aperture Radar Imagery XXIII, 984302 (14 May 2016); doi: 10.1117/12.2224952
Show Author Affiliations
Chad Knight, Space Dynamics Lab. (United States)
Ross Deming, Solid State Scientific Corp. (United States)
Jake Gunther, Utah State Univ. (United States)

Published in SPIE Proceedings Vol. 9843:
Algorithms for Synthetic Aperture Radar Imagery XXIII
Edmund Zelnio; Frederick D. Garber, Editor(s)

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