NDLI: Performance characterization of space-time adaptive processing algorithms for distributed target detection in non-ideal environments

Content Provider	IEEE Xplore Digital Library
Author	McDonald, K.F. Blum, R.S.
Copyright Year	2002
Description	Author affiliation: Signal Process. Dept., Mitre Corp., Bedford, MA, USA (McDonald, K.F.)
Abstract	The use of adaptive algorithms to mitigate the detrimental effects of noise on receivers employing antenna arrays is instrumental in modern day radar systems applications. In most of these algorithms, the target is assumed to be confined to only one range cell. Under practical operating conditions, the target can actually be distributed across several range cells. This signal contamination causes the performance of the adaptive algorithm to degrade. Also, a covariance matrix is used for clutter-plus-noise in the design of the adaptive algorithm. This quantity is usually characterized by using samples taken from range cells surrounding the test cell. Performance suffers if the underlying test cell covariance matrix is different from the average covariance matrix of the surrounding range cells. We analyze a space-time adaptive processing (STAP) algorithm designed to utilize signal contamination to the advantage of the receiver. Expressions for performance, incorporating the possibility of covariance matrix mismatch, are developed for such distributed target scenarios. Numerical analysis illustrates that the presented algorithm functions significantly better than traditional STAP algorithms in signal contaminated environments. This investigation also shows how variations in the parameters that describe covariance matrix mismatch affect performance.
Sponsorship	IEEE Los Angeles Council IEEE Aerospace & Electron. Syst. Soc. Northrop Grumman Corp. Raytheon Co
Starting Page	298
Ending Page	303
File Size	598945
Page Count	6
File Format	PDF
ISBN	078037357X
DOI	10.1109/NRC.2002.999735
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-04-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Object detection Covariance matrix Adaptive algorithm Algorithm design and analysis Adaptive arrays Radar antennas Contamination Testing Working environment noise Receiving antennas
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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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