CAJ | 학술논문

基于测量量的数学模型，推导环月探测器状态矢量的信息阵，建立定轨误差RTN分量的误差方程和协方差矩阵，给出了测距、测速、时延和时延率的测量误差对定轨误差RTN分量影响的数值关系。根据中国探月工程实际轨道测量数据精度和测站／基线分布情况，计算分析了2种环月轨道位置速度误差RTN分量的影响因素和误差水平。利用嫦娥-1、2月球探测器实际定轨结果，验证了分析方法的有效性。该方法对中国探月工程二期任务动力下降初始定轨误差RTN分量计算具有参考意义。
기우측량량적수학모형，추도배월탐측기상태시량적신식진，건립정궤오차RTN분량적오차방정화협방차구진，급출료측거、측속、시연화시연솔적측량오차대정궤오차RTN분량영향적수치관계。근거중국탐월공정실제궤도측량수거정도화측참／기선분포정황，계산분석료2충배월궤도위치속도오차RTN분량적영향인소화오차수평。이용항아-1、2월구탐측기실제정궤결과，험증료분석방법적유효성。해방법대중국탐월공정이기임무동력하강초시정궤오차RTN분량계산구유삼고의의。
Based on measurement models of the tracking data including ranging, range rate, inter- ferometric delay and delay rate, the information array of lunar probe's state vector is presented. Error equations and covariance matrixes for RTN components of orbit-determination error are de- rived. The numerical relation between RTN components of error and the measurement accuracy are calculated for lunar orbit. According to measurement error and station/baseline distribution in the China lunar exploration program, the influence and level of error factors are analyzed and calcu- lated for RTN components of errors in the position and velocity for various lunar orbits. The or- bit-determination results using measurement data of Chang'e-1 and Chang'e-2 probes validate this analysis method, which will be as an important reference for RTN components of errors in the lunar decent initial orbit in the second phase of China lunar exploration program.