An incremental range and unambiguous velocity estimation approach with FDA-MIMO radar
Yanxing Wang, Shengqi Zhu, Lan Lan, Ximin Li, Feilong Liu, Zhuochen Chen · IET conference proceedings. · 2024
This paper deals with the problem of incremental range and unambiguous velocity estimation for fast-moving targets in frequency diverse array (FDA) multiple-input and multiple-output (MIMO) radar. The FDA-MIMO radar signal model for fast-moving target scenarios is established at first, and the incoherence of the signals between different transmit elements due to the coupling of frequency offset and velocity is analyzed. Moreover, an iterative incremental range with the Doppler ambiguity index estimation method is proposed. Based on this, the estimated true velocity of the target is used to construct a compensation vector to further obtain the accurate incremental range. Numerical results are provided to validate the effectiveness of the proposed method for parameter estimation of fast-moving targets.