Range and velocity estimation of radar targets by weighted OFDM modulation

In this paper, we address the problem of spectrum sharing and co-existence between radar and communications systems by using a reconfigurable dual-use radar/comm system on a single RF platform. We develop a nonlinear least-squares method for range and velocity estimation of moving targets using weig...

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Bibliographic Details
Published in2014 IEEE Radar Conference pp. 1358 - 1362
Main Authors Turlapaty, Anish, Yuanwei Jin, Yang Xu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2014
Subjects
Doppler effect
Estimation
Modulation
Peak to average power ratio
Radar
Signal to noise ratio
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Summary:In this paper, we address the problem of spectrum sharing and co-existence between radar and communications systems by using a reconfigurable dual-use radar/comm system on a single RF platform. We develop a nonlinear least-squares method for range and velocity estimation of moving targets using weighted orthogonal division multiplexing (WOFDM) waveform modulation scheme. The corresponding Cramer-Rao low bounds for the target parameter estimator are derived. Weighted OFDM waveform is derived subject to a low peak to average power ratio constraint. The proposed WOFDM modulation scheme shows improved accuracy for delay estimation compared with the classic constant envelope OFDM modulation method while achieving a lower peak to average power ratio.
ISSN:1097-5659
DOI:10.1109/RADAR.2014.6875811