A virtual instrument for Micro-Doppler analysis of signals in SAR/ISAR: Parameters estimation and focusing moving targets

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Authors
  1. Thayaparan, T.
Corporate Authors
Defence Research and Development Canada, Ottawa Research Centre, Ottawa ON (CAN)
Abstract
The micro-Doppler (m-D) effect appears in the synthetic aperture radar (SAR)/inverse SAR (ISAR) image of a target whenever the target has one or more rotating or vibrating parts. M-D effect introduces distortion in the SAR/ISAR images. On the other hand, m-D effect also carries information about the features of moving parts of a stationary or moving target that can be used for target identification purpose. Based on L-statistics, spectrogram, and inverse Radon transform, a radar data exploitation Matlab toolbox was developed for classifying air, land and ocean targets, which helps Geospatial Intelligence (GEOINT) support to Canadian Forces. This toolbox will scan and search any M-D activity in the desired area of the SAR/ISAR image. The toolbox has three options; 1) Focus the stationary target if there is no m-D, 2) Focus the target after removing the m-D, and 3) extract the m-D and determine the motion parameters. The toolbox was tested and validated against a variety of simulated and measured targets.

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Keywords
synthetic aperture radar;inverse synthetic aperture radar;micro-doppler analysis;time-frequency analysis;fourier transform;short-time fourier transform;S-method;parameters estimation;geospatial intelligence
Report Number
DRDC-RDDC-2014-R6 — Scientific Report
Date of publication
01 Dec 2014
Number of Pages
84
DSTKIM No
CA039668
CANDIS No
800710
Format(s):
Electronic Document(PDF)

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