CAJ | 학술논문

为分析同波束干涉测量这一高精度相对测角技术对月球交会对接两个航天器的相对位置、速度（状态）影响，文章根据协方差分析理论及各测量量的模型，推导测量量关于相对状态量的信息矩阵，建立了相对状态误差协方差模型；结合月球轨道交会对接仿真轨道，开展测量误差对两个航天器的相对状态误差影响协方差分析。结果表明，在当前测量误差条件下，相对位置、速度误差分别达到米级和厘米每秒级。在分析相对状态误差影响因子的基础上，重点对同波束干涉测量差分相时延整周模糊误差及时延率误差对相对状态影响进行了分析，结果表明整周模糊度误差对相对位置误差影响显著，时延率误差对相对速度误差影响显著。
위분석동파속간섭측량저일고정도상대측각기술대월구교회대접량개항천기적상대위치、속도（상태）영향，문장근거협방차분석이론급각측량량적모형，추도측량량관우상대상태량적신식구진，건립료상대상태오차협방차모형；결합월구궤도교회대접방진궤도，개전측량오차대량개항천기적상대상태오차영향협방차분석。결과표명，재당전측량오차조건하，상대위치、속도오차분별체도미급화전미매초급。재분석상대상태오차영향인자적기출상，중점대동파속간섭측량차분상시연정주모호오차급시연솔오차대상대상태영향진행료분석，결과표명정주모호도오차대상대위치오차영향현저，시연솔오차대상대속도오차영향현저。
To establish steady relative navigation between two spacecraft in lunar orbit rendezvous and docking,accurate relative state determination between two spacecraft is needed in the long range ground based navigation. Same beam interferometry (SBI ), as a high precision technology for relative angle measurement, is of great sigficant in the relative state determination. However,the system method for analyzing the influence of SBI on the relative states of two spacecraft in lunar orbit rendezvous was not developed. The information matrix of measurements with the relative states was deduced according to the covariance theory, and the model of the relative states error covariance was established.The simulation results show that the relative position and velocity errors are within the meter and millimeter per second under the current range, range rate, VLBI and SBI measurement errors. The error and its influence was obtained,and the influence of cycle ambiguity error on relative state error was analyzed.The resutls show that the cycle ambiguity of SBI reduce from 2 to 0, and the relative position error on T and N is decreased greatly.