基于已知目标高度下的三站时差定位

Three-station time difference of arrival localization based on known target height

传统的三站时差定位算法虽然可以得到目标的经纬度,但对于空中目标,海拔高度必然成为影响系统定位误差的主要因素。为降低该干扰,文中提出了一种基于已知目标高度下的三站时差定位算法,并采用了真实数据对该算法进行了针对性仿真分析。仿真结果表明,该算法有效降低了空中目标高度带来的计算误差,提高了定位精度。

The traditional three-station time difference of arrival (TDOA) location algorithm can only get the longitude and latitude of the target. But for the air target,the altitude is the main factor affecting the positioning error of the system. In order to reduce the disturbance,a three-station time difference of arrival (TDOA) localization algorithm based on known target height is proposed,and the algorithm is simulated with real data. The simulation results show that this algorithm can effectively reduce the calculation error caused by the height of air target and improve the positioning accuracy.