摘要
提出了一种在观测站位置和运动速度带有误差的条件下,运动双站对匀速直线运动目标的时差/频差定位算法。该算法在不同时刻观测得到一组时差和频差测量方程,并将目标运动状态对其位置和速度的约束关系应用到方程中,通过联立求解方程组实现定位。推导了CRLB,并证明该算法收敛时性能可以达到CRLB,蒙特卡罗仿真验证了本文的理论分析结果。
This paper proposes an algorithm to locate the uniform-rectilinear-motion source by ob- serving the TDOAs and FDOAs among it and two moving receivers many a time in the presence of re- ceiver location errors. The method uses a set of TDOA and FDOA equations observed at different times and locates the position of the source by adding the moving state restriction to its instantaneous position and velocity. The Cramer-Rao lower bound is derived and the algorithm is shown to be able to reach the CRLB accuracy when it converges. Monte Carlo simulations also corroborate the theoret- ical results.
出处
《信息工程大学学报》
2013年第6期719-726,共8页
Journal of Information Engineering University
关键词
站址误差
运动状态约束
时差
频差
CRLB
receiver location errors
moving state restriction
time difference of arrival（TDOA）
frequency difference of arrival（FDOA）
cramer-rao lower bound
