Resolving Doppler Ambiguity Via Spread Phase Alignment in FDA-MIMO Radar
Yanxing Wang, Shengqi Zhu, Guisheng Liao, Lan Lan, Zhuochen Chen, Feilong Liu
Abstract
This paper deals with the problem of Doppler ambiguity in a frequency diverse array (FDA) multiple-input and multiple-output (MIMO) radar. In our modeling stage, a spread phase alignment (SPA) method is proposed by utilizing the pulse-dependent transmit spatial frequency. In this respect, the Doppler spread alignment is performed in each transmit pulse based on spatial cancellation. Hence, the point targets, which are de-focused due to the spread Doppler frequency can be focused in the transmit spatial frequency domain. Furthermore, the Doppler ambiguity index is estimated after principal velocity compensation resorting to the maximum likelihood (ML) criterion. Numerical results are provided to verify the effectiveness of the proposed method in resolving the Doppler ambiguity.
BibTeX
@inproceedings{icassp2023_resolvingdoppler,
title = {Resolving Doppler Ambiguity Via Spread Phase Alignment in FDA-MIMO Radar},
author = {Yanxing Wang and Shengqi Zhu and Guisheng Liao and Lan Lan and Zhuochen Chen and Feilong Liu},
booktitle = {ICASSP 2023},
year = {2023}
}