Optimal radio emitter location based on the Doppler effect

Alon Amar, Anthony J. Weiss

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Differential Doppler is a common technique for emitter localization in which the signal of a stationary emitter is intercepted by at least two moving receivers. The frequency difference between the receivers is measured at several locations along their trajectories and the emitter's position is then estimated based on these measurements. This two-step approach is suboptimal since each measurement is performed independently, although all measurements correspond to the same position. Instead, a single step maximum likelihood approach is proposed here for known and unknown waveforms. The position is determined directly from all the observations by a search in the position space. Simulations show that the proposed method outperforms the differential Doppler method for weak signals while both methods converge to the Cramer Rao bound for strong signals. Also, in some cases of interest the proposed method inherently selects reliable observations while ignoring unreliable data.

Original languageEnglish
Title of host publicationSAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop
Pages54-57
Number of pages4
DOIs
StatePublished - 2008
EventSAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop - Darmstadt, Germany
Duration: 21 Jul 200823 Jul 2008

Publication series

NameSAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop

Conference

ConferenceSAM 2008 - 5th IEEE Sensor Array and Multichannel Signal Processing Workshop
Country/TerritoryGermany
CityDarmstadt
Period21/07/0823/07/08

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