CAJ | 학술논문

为了定量分析卫星无源探测技术的定位方式和精度，对某空间飞行器主动段的轨道估计和误差分析问题进行了研究。基于卫星简化运动方程，采用四阶龙格-库塔算法对观测卫星任意时刻位置进行解算；利用最小二乘法对观测数据进行拟合，保证仿真过程数据的时间一致性；选取合适的质量和速度模型，建立空间飞行器基于双星无源探测的主动段三维交汇定位模型和运动方程模型；基于模拟数据给出估计轨道曲线并对三轴指向误差进行分析，提出采用改进粒子群算法对差量进行实时计算和空间飞行器轨道修正。仿真结果表明，经过系统误差修正，空间飞行器轨道误差降低到1m级水平。
위료정량분석위성무원탐측기술적정위방식화정도，대모공간비행기주동단적궤도고계화오차분석문제진행료연구。기우위성간화운동방정，채용사계룡격-고탑산법대관측위성임의시각위치진행해산；이용최소이승법대관측수거진행의합，보증방진과정수거적시간일치성；선취합괄적질량화속도모형，건립공간비행기기우쌍성무원탐측적주동단삼유교회정위모형화운동방정모형；기우모의수거급출고계궤도곡선병대삼축지향오차진행분석，제출채용개진입자군산법대차량진행실시계산화공간비행기궤도수정。방진결과표명，경과계통오차수정，공간비행기궤도오차강저도1m급수평。
In order to make a quantitative analysis for the positioning method and precision of satellite passive detection technology,the orbit estimation and error analysis of space vehicle in active period are studied in this paper .Based on the simplified satellite motion equation,the observation satellite position can be calculated out at any time by using the fourth-order Runge-Kutta algorithm.To ensure time consistency of data during the simulation,the least squares method is adapted to fit the observed data .The appropriate quality and speed models are selected,and the three-dimensional intersection positioning model and motion equation model of space vehicle in active period are established based on satellite passive detection .Based on simulated data,the estimated orbit curves are given and three-axis pointing error is analyzed,and the improved particle swarm algorithm for real-time error calculation and space vehicle's orbit correction is proposed.The simulation results show that space vehicle's orbit error is reduced to 1m level after the system error correction .