Projection approach for STAP

Unnikrishna Pillai, S. Radhakrishnan Pillai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The sample support problem in space-time adaptive processing (STAP) applications arises from the requirement to adapt many spatial and temporal degrees-of-freedom (DOF) to a changing interference environment that includes clutter and jammers. Often, in heterogeneous overland strong clutter environments, the available wide sense stationary sample support is severely limited to preclude the direct implementation of the sample matrix inverse (SMI) approach. In this paper we outline an approach to address the sample support problem by utilizing projection methods - alternating projections or relaxed projection operators onto desired convex sets - to retain the a-priori known structure of the covariance matrix. Our initial analysis shows that by combining these approaches with eigenbased techniques, it is possible to reduce significantly the data samples required in non-stationary environment and consequently achieve superior target detection. In fact, multiplicative improvement in data reduction compared to direct eigen-based methods can be obtained at the expense of negligible loss in space-time aperture.

Original languageEnglish (US)
Title of host publicationIEEE National Radar Conference - Proceedings
Pages397-402
Number of pages6
StatePublished - 2002
EventProceedings of the 2002 IEEE Radar Conference - Long Beach, CA, United States
Duration: Apr 22 2002Apr 25 2002

Other

OtherProceedings of the 2002 IEEE Radar Conference
CountryUnited States
CityLong Beach, CA
Period4/22/024/25/02

Fingerprint

Space time adaptive processing
Covariance matrix
Target tracking
Data reduction

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Pillai, U., & Pillai, S. R. (2002). Projection approach for STAP. In IEEE National Radar Conference - Proceedings (pp. 397-402)

Projection approach for STAP. / Pillai, Unnikrishna; Pillai, S. Radhakrishnan.

IEEE National Radar Conference - Proceedings. 2002. p. 397-402.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pillai, U & Pillai, SR 2002, Projection approach for STAP. in IEEE National Radar Conference - Proceedings. pp. 397-402, Proceedings of the 2002 IEEE Radar Conference, Long Beach, CA, United States, 4/22/02.
Pillai U, Pillai SR. Projection approach for STAP. In IEEE National Radar Conference - Proceedings. 2002. p. 397-402
Pillai, Unnikrishna ; Pillai, S. Radhakrishnan. / Projection approach for STAP. IEEE National Radar Conference - Proceedings. 2002. pp. 397-402
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