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
Main Authors: Turlapaty, Anish, Yuanwei Jin, Yang Xu
Format: Conference Proceeding
Language:English
Subjects:
Doppler effect
Estimation
Modulation
Peak to average power ratio
Radar
Signal to noise ratio
Online Access:Request full text
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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
2375-5318
DOI:10.1109/RADAR.2014.6875811