BDS网络RTK中距离参考站整周模糊度单历元解算方法  

The Algorithm of Single-epoch Integer Ambiguity Resolution between Middle-range BDS Network RTK Reference Stations

作　　者：祝会忠[1] 徐爱功[1] 高猛[1] 杨秋实[1] 

机构地区：[1]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《测绘学报》2016年第1期50-57,共8页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(41504010;41474020);国家863计划(2014AA121501);辽宁省博士启动基金(20141141);航天飞行动力学技术重点实验室开放基金(2014afdl005)~~

摘　　要：提出了一种BDS网络RTK中距离（50～100km）参考站间的双频载波相位整周模糊度单历元解算方法。该方法首先利用B1、B2载波相位整周模糊度间的线性关系选取B1、B2载波相位整周模糊度备选值。利用双频载波相位整周模糊度备选值计算双差电离层延迟误差，根据参考站各卫星电离层延迟误差间的空间关系，使用双差电离层延迟误差构建双差电离层延迟误差的线性计算模型。通过双差电离层延迟误差线性计算模型的建立搜索和确定B1、B2载波相位的整周模糊度。经CORS网实测数据试验算例的验证，该方法只需一个历元的观测数据即可确定参考站间双差B1、B2载波相位整周模糊度，且不受周跳影响。The algorithm of double frequency carrier phase integer ambiguity resolution between middle- range reference stations at single-epoch is proposed. The ambiguity candidates of B1 frequency and B2 frequency carrier phase are selected by linear relationship between carrier phase ambiguities of B1 frequency and B2 frequency carrier phase. The double difference ionosphere delay errors con be calculated by the ambiguity candidates of double frequency carrier phase. Then the linear calculation model of double difference ionosphere delay errors can be established by the double difference ionosphere delay errors according to the spatial relationship between the ionosphere delay errors of each satellites on reference stations. And the ambiguities of B1 frequency and B2 frequency carrier phase are searched and fixed in the establishing of the linear calculation model of double difference ionosphere delay errors. This algorithm is tested by the data of BDS CaRS network. The results indicate that the double difference integer ambiguity between reference stations can be fixed at single-epoch, and this algorithm avoids the effect of cycle clips.

关 键 词：BDS 网络RTK 单历元 整周模糊度 电离层延迟误差 

分 类 号：P228[天文地球—大地测量学与测量工程]