基于最小二乘改进法的测速数据处理及应用

The Improved Least Squares Method of Data Speed Measuring System

多测速系统是航天测控网的重要组成部分,通过多站联测可实现外空间飞行目标的高精度测速。以两套测量体制联测距离和变化率为对象,建立了最小二乘改进方法。该方法在通过最小化误差平方和的基础上寻找数据的最佳函数匹配,对目标参数进行估值,并对解算出的目标参数反算到测元,对实际测元的差值部分进行有效补偿,获取了更为准确的目标参数,使计算出的结果更加贴近实际飞行情况。

Multi-velocity measurement system can achieve the measured high-accuracy velocity of outer space target associated with muhistation, which is an important part of TT＆C network. The improved ]east square method was established aiming at two sets system connection measured distance and rata of change in test mission. The method can figure out the best function match based on minimizing the sum of squares of errors, inverse compute the target parameter into measurement element and compensate value of it and actual measurement el- ement effectively to obtain more accurate target parameters. Thus ,the calculated target parameter can be much more close to the actual fight situation.