关键词: 单站定位, 时分多址（TDMA）, 目标运动分析, 到达时间, 前向距离估计, 后向距离估计, 速度估计

Abstract: The precision of range-velocity measurement relates to the range and movement pattern of the target in the target motion analysis. To improve the range and velocity estimation accuracies in both the face-to-face and the back-to-back movement circumstances, this paper proposes the concepts of the forward and the backward estimation of range-velocity. On this basis, the forward and backward hybrid estimation algorithm is given. Meanwhile, the estimation accuracies of range and velocity are analyzed theoretically. The hybrid algorithm, taking into account both of the performance and the time delay characteristic, uses previous M data and N data followed to estimate the range and velocity of current position. Simulation results show that the proposed algorithm performs better than alternative of the forward and the backward algorithms with the same amount of data.

Key words: single-station location, Time Division Multiple Address（TDMA）, Target Motion Analysis（TMA）, Time Of Arrival（TOA）, forward range estimation, backward range estimation, velocity estimation