NDLI: Geometrical and signal processing aspects using a bistatic hitchhiking radar system

Content Provider	IEEE Xplore Digital Library
Author	Overrein, O. Olsen, K.E. Johnsrud, S. Sornes, P.K. Johnsen, T. Navarro, J. Sahajpal, V. Stemland, R.O.
Copyright Year	2005
Description	Author affiliation: Applied Radar Phys. AS, Kjeller, Norway (Overrein, O.)
Abstract	Bistatic hitchhiking radar system concepts have been object for extensive research both for military and civilian applications. Hitchhiking systems are in principle easy to construct and can be used without introducing any interference, or being seen by a possible enemy. This paper addresses how to handle the geometry such systems are faced together with using proper signal analysis strategies for obtaining optimum target detection. The main motivation for doing bistatic measurements is to be able to see signals from the target that are scattered in other directions than backwards, due to target shape. For large bistatic angles the target forward scattering region can give serious enhancement due to the Babinet principle. Experimental results from bistatic hitchhiking radar are shown for the purpose of aircraft detection. The data presented has been processed non-coherently. For suppression of device noise and scan-to-scan stationary clutter a signal analysis method called "target back propagation technique" has been used. Sampled radar data containing 6 aircrafts is presented. The technique is used on an image with bistatic geometry averaged over 3 scans and with target back propagation locally applied for each aircraft. All aircrafts are sharpened in the image and this illustrates the usefulness of the "target back propagation technique" for suppression of device noise and stationary clutter, even if just three scans are integrated.
Sponsorship	Nat. Capital Area Council IEEE Aerospace and Electron. Syst. Soc. RADAR Syst. Panel
Starting Page	332
Ending Page	336
File Size	481283
Page Count	5
File Format	PDF
ISBN	078038881X
DOI	10.1109/RADAR.2005.1435846
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-05-09
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar signal processing Aircraft Geometry Signal analysis Shape measurement Radar scattering Airborne radar Clutter Radar applications Interference
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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