三向测量技术在深空探测中的应用研究

较详细地介绍了三向测量技术（包括三向测距和三向测速）,阐述使用三向测量的工程背景和重要意义,给出利用三向测量数据进行实时定位的数学推导,并分别对三向测距和三向测速原始数据的误差进行了分析;最后给出在＂嫦娥一号＂试验轨道段采用三向测量技术得到的残差分析结果。结果表明,在未进行站间时间同步的情况下,＂嫦娥一号＂卫星100km×100km环月轨道段三向测距误差约200m,三向测速误差约2cm/s,利用三向测量数据可以单独进行轨道确定,验证了我国后续深空探测中应用三向测量技术的可行性。

Application of Three-way Measurement in Deep Space Exploration

The engineering background and significance of three-way measurement(including three-way ranging and three-way Doppler) are introduced.The mathematical model and application scenarios for real-time trajectory determination using three-way measurements are given and the theoretical error of data is analyzed.The result of residual error analyses of Chang’E-1 three-way measurement shows that without time synchronization,three-way ranging error is approximately 200m and three-way Doppler error is approximately 2 cm/s in 100 km×100 km lunar orbit.Therefore,three-way measurement data can be used independently for orbit determination and it is feasible to use three-way measurement in future deep space missions.