附加系统参数平差在三维控制网平差中的应用

The application in three-dimensional control network adjustment with additional system parameters adjustment

考虑到三维控制网中距离和垂直角都存在系统误差的事实,本文讨论了在三维控制网平差中顾及观测量系统误差数据处理理论及应用。在观测方程中将距离的固定误差、比例误差及垂直角的大气折光误差设定为附加系统参数进行平差处理。结果表明,对于存在系统误差的三维控制网,通过引入附加参数得到自动补偿,相比经典网而言,获得平差结果更加准确、可靠。

Considering the fact that it has systematic errors in distance and vertical angle of three- dimensional control network, this paper discusses the data processing theory and application considering systematic errors of observations. Distance fixed errors, scale errors and the atmospheric refraction of vertical angle errors are regarded as additional system parameters in the observation equation, and the results show that for the existing systematic errors of three-dimensional control network, adjustment results are more accurate and reliable compared with classical network by introducing additional parameters to get automatic compensation.