宽巷约束的网络RTK基准站间模糊度固定方法  

A method of fixing integer ambiguity between base stations in network RTK with wide-lane ambiguity restriction

作　　者：吕伟才[1,2] 高井祥[1] 张书毕[1] 王坚[1] 

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116 [2]安徽理工大学测绘学院,安徽淮南232001

出　　处：《中国矿业大学学报》2014年第5期933-937,共5页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(41074010);江苏省普通高校研究生科研创新计划项目(CXZZ12-0939);江苏省高校优势学科建设工程项目(SZBF2011-6-B35)

摘　　要：通过分析宽巷模糊度、无几何模型和无电离层组合模型之间的几何关系,提出了一种附有宽巷约束的网络实时动态测量(RTK)模糊度固定方法和相应的模糊度检验方法.该方法首先利用宽巷(MW)组合固定宽巷模糊度,并将宽巷模糊度作为精确值,与无几何模型和无电离层模型联合平差单历元解算L1和L2的模糊度浮点解,然后将浮点解直接取整获得相应的固定解,最后通过GPS/BDS双系统长短基线对模糊度解算进行正确性检验.经实测计算验证,该方法能快速、稳定地固定网络RTK模糊度,且对于长短基线都有较好的效果.By analyzing the geometrical relationship between wide-lane ambiguity, geo-free model and ionosphere-free model, a method of fixing integer ambiguity between base stations in network RTK and the corresponding test method are presented. The ambiguities of wide-lane are fixed through MW-combination first and regarded as truth value, and then the floating res- olution of the ambiguities of L1 and L2 is gotten by adjustment calculation combined with the models of geo-free and ionosphere-free at single epoch. After that the floating ambiguities are rounded to the nearest integers directly. Finally, the correctness of ambigu through the short and long GPS/BDS baselines. The result indicates that this ambiguities of network RTK fast and steadily. Additionally, it is effective to long baselines. ities is checked method can fix both short and long baselines.

关 键 词：网络RTK 双差模糊度 宽巷约束 线性关系 北斗定位系统 

分 类 号：P228.4[天文地球—大地测量学与测量工程]