Focusing Moving Targets - Terrain Imaged with Moving-Target Matched Filters: A Tutorial

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Authors
  1. Livingstone, C.
  2. Sikaneta, I.
Corporate Authors
Defence R&D Canada - Ottawa, Ottawa ONT (CAN)
Abstract
This technical memorandum provides a tutorial on the processing of synthetic aperture radar (SAR) ground moving target indication (GMTI) data with a filter that is not matched to the collected data. This could occur, for example, when objects in the terrain undergo motion that is not accounted for in the SAR filter. Or, conversely, when the SAR filter has been modified to compress moving objects thereby introducing a mismatch with stationary objects. Additionally, due to the sampling of the SAR signal, ambiguities become an issue. The matched filter to properly focus an image is not unique. It is possible that a filter constructed with a given across-track velocity parameter yields a SAR image that cannot be distinguished from the SAR image constructed with a filter identical in all respects except for a different but appropriately chosen across-track velocity parameter. This technical memorandum explores the ambiguity issue and discusses the impact on SAR-GMTI.

Il y a un résumé en français ici.

Report Number
DRDC-OTTAWA-TM-2004-160 — Technical Memorandum
Date of publication
01 Sep 2004
Number of Pages
45
DSTKIM No
CA025113
CANDIS No
522671
Format(s):
CD ROM

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