Abstract: GPS ambiguity resolution has always been difficult for real time kinematics surveying, so it is an attractive method to combine GPS observations with the geometry information from other surveying system to improve the ambiguity resolution. In kinematics deformation surveying, the prior geometry information can be obtained from different methods, so it can be used to improve GPS ambiguity. It deals with the collection and the description of the prior geometry and the method using geometry validation to improve the ambiguity resolution. The principle of the method, the relationships between the geometry threshold and the ambiguity search space are presented. A method to determine the threshold for the geometry validation is suggested. The field tests are carried out to show the feasibility of the proposed methods.

摘要： 对于GPS实时动态测量来说,模糊度解算总是比较困难,因此集成GPS观测值和其它测量系统的信息来改善模糊度解算就成了一种具有吸引力的方法。在动态变形监测中先验信息可以通过不同的方法获得,所以它可以用来改善GPS模糊度解算。本文提出了用几何制约法来改善模糊度解算的方法,同时对方法的原理、几何制约值和模糊度搜索空间之间的关系进行描述。最后得出一种确定几何制约值的方法。野外试验验证了所提方法的可行性。