双站交会角的单站虚拟观测

利用程差的相似递推，并通过和由正弦定理所得到的三角函数式联解，可得到含有未知主站径向距离的双站交会角的单站测算方程。在此基础上，进一步利用短距相差测距法，给出了基于相差测量的双站交会角的单站测算公式。由于仅和主站的参数测量相关，故副站以及双站间的间距实际上可以是虚设的。误差分析表明，由于所得到的交会角测算式与径向距离成反比，所以，基于短基线相差检测所得到的双站交会角可具有较好的测量精度。

Single-Station Virtual Observation of Rendezvous Angle Between Double Stations

Using the similarity recurrence method for path difference and formula of trigonometric function obtained by law of sine, the single station measuring equation of rendezvous angle between double stations can be derived which contains unknown radial distance of main station. The single station measuring formula based on rendezvous angle between double stations is obtained by utilizing the short ranging method based on phase difference measuring. Because it is only associated with the parameter measurement of main station, the secondary station as well as the space between two stations may be nominal in fact. The error analysis shows that better measurement accuracy can be gained because of the measuring formula of rendezvous angle is inversely proportional to radial distance.