Contribution of auxiliary coherent radar receiver to target's velocity estimation

Itzik Cohen, Nadav Levanon

Research output: Contribution to journalArticlepeer-review


Recent progress in bistatic radar techniques can be used to improve performances of classical monostatic radar. A prominent limitation of coherent radar is its inability to measure the complete velocity vector (magnitude and direction) of a detected target. A single coherent detection can provide range-rate only. At least two detections, separated in time, are needed to estimate the target's velocity vector. This study discusses how the velocity vector can be determined by two simultaneous detections spaced in distance. The second detection is obtained by an auxiliary distant bistatic coherent receiver; an approach proposed in the 1990s to enhance meteorological radar. Being a very simple case of a distributed radar system allows for a simple demonstration of how to calculate the target's position and velocity vector and how to analyse the estimation accuracy, including geometric dilution of precision plots of the velocity error. Also discussed are two methods to identify correct data association when more than one target is detected.

Original languageEnglish
Pages (from-to)287-293
Number of pages7
JournalIET Radar, Sonar and Navigation
Issue number3
StatePublished - 1 Mar 2018


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