On the distribution of ambiguity levels in mimo radar

M. A. Haleem, A. Haimovich

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

17 Scopus citations

Abstract

The statistical behavior of sidelobe-ambiguity arising in location estimation in distributed coherent MIMO radar is studied in this paper. A model is developed for analyzing the statistics of the localization metric under random sensor locations. Closed form expressions are obtained for the mean and variance of the localization metric. It is shown that the mean is independent of the number of sensors and its sidelobes decrease with the squared distance from the coherence point of the MIMO array. With M transmit sensors and N receive sensors, the variance behaves as 1/MN for locations beyond the vicinity of the target being observed. When all N sensors function as transceivers, the variance approaches 2/N2. Except in the vicinity of the target, the side lobe levels have equal distribution at every location. The study is extended to derive the statistics of the peak sidelobe level and a simple expression is obtained relating the required number of sensors for a tolerated level of peak sidelobes and a desired confidence level.

Original languageEnglish (US)
Title of host publication2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008
Pages198-202
Number of pages5
DOIs
StatePublished - Dec 1 2008
Event2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008 - Pacific Grove, CA, United States
Duration: Oct 26 2008Oct 29 2008

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Other

Other2008 42nd Asilomar Conference on Signals, Systems and Computers, ASILOMAR 2008
CountryUnited States
CityPacific Grove, CA
Period10/26/0810/29/08

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Networks and Communications

Keywords

  • Ambiguity
  • MIMO radar
  • Radiation pattern

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