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Detection Limits for Sideways Looking Mti Radars

By White, R. G.

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Book Id: WPLBN0000016882
Format Type: PDF eBook
File Size: 0.5 MB
Reproduction Date: 2005
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Title: Detection Limits for Sideways Looking Mti Radars  
Author: White, R. G.
Language: English
Subject: Military, Armed Forces., National defense.
Collections: Military and Armed Forces Library Collection
Publication Date:
Publisher: Department of Defense


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White And D. J. Co, R. G. (n.d.). Detection Limits for Sideways Looking Mti Radars. Retrieved from

Government Reference Publication

Excerpt: 1 Introduction: Airborne surveillance radars provide powerful tools for addressing a variety of ground surveillance activities ranging from terrain height mapping to moving target detection. This range of different activities may in principle all be performed by a single radar system designed to operate in a variety of different modes. Two common modes for ground surveillance are the Synthetic Aperture Radar (SAR) mode for static target detection and Ground Moving Target Indication (GMTI) for the detection of ground moving targets. While the concept of operating in different modes on a common radar is straightforward, optimising the overall design is not. For example, the preferred orientation for the SAR and GMTI modes are different with the SAR needing to look sideways to the aircraft flight path and the GMTI preferring to look ahead of the aircraft. When we add the constraints imposed by airframe design we inevitably arrive at a compromise solution which is a moderately sized antenna mounted in a sideways looking configuration. The GMTI must now operate in a manner which allows a good detection performance to be recovered in this sideways looking mode. The solution is to use Displaced Phase Centre Antenna (DPCA) or Space Time Adaptive Processing (STAP) techniques. These techniques allow the GMTI system to differentiate between unwanted static clutter and slowly moving targets of interest.

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