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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。
The three-way measurement technology (including three-way ranging and three-way speed measurement) is introduced in detail. The engineering background and significance of three-way measurement are expounded. The mathematical derivation of real-time location using three-way measurement data is given. The error of the original data of three-way ranging and three-way speed measurement was analyzed. Finally, the residual analysis results obtained by using the three-direction measurement technique in the track section of Chang’E-1 were given. The results show that, without the time synchronization between stations, the error of three-way ranging from 100 km × 100 km on the lunar orbit section of Chang’e-1 satellite is about 200 m, and the error of three-way velocity measurement is about 2 cm / s. The data can be tracked independently, which verifies the feasibility of applying three-dimensional measurement technology in the subsequent deep space exploration in our country.