自由飞行段跟踪数据的系统误差估计

连续波雷达是目前外火箭轨道测量的主要高精度设备,用数学方法估计和修正其系统误差有特别重要的意义。根据自由飞行轨道方程准确的特点,利用轨道方程建立了估计自由段系统误差的非线性模型,并给出了求解系统误差和轨道参数估计值的计算方法。运用该方法,只要一套MISTRAM系统的跟踪数据,就能给出自由飞行段常值系统误差的估计。

ESTIMATION OF SYSTEM ERROR FOR TRACKING DATA OF FREE FLYING TRAJECTORY

The continuous wave radar is the main tracking equipment for trajectory observing at present. Estimation and calibration of system errors have important significance. In this paper, according to that the trajectory equation in free flyiny can be obtained accurately, we build a nonlinear model for estimating system error of free flying trajectory by use of trajectory equation and give the relevant algorithm. Specially, by use of this method, we can give high precision estimation of system error only using the tracking data of a set of MISTRAM.