基于长江北斗CORS系统的PPK定位技术在航道测量中的应用

随着长江干线北斗地基增强系统的建成,其在航道测量中的应用方法与效果有待研究和认证。基于长江干线北斗CORS系统的PPK技术在航道测量中的应用试验以及对试验结果的精度统计,论述该技术在长江航道测量中的应用方法,分析其测量精度。结果表明,利用长江CORS系统基准站进行PPK定位数据解算,定位平面精度可以满足相关规范的要求,而高程精度则不稳定。

Application of PPK positioning technology based on the Yangtze River Beidou CORS system in waterway survey

With the completion of the Beidou Navigation Satellite System(BDS)Augmentation system for the Yangtze River trunk line,the method and effect of its application in waterway surveys need to be studied and certified.An experiment is conducted on the application of a post processed kinematic(PPK)technology based on the Beidou continuously operating reference stations(CORS)system for the Yangtze River trunk line in waterway surveys,and the accuracy of the experimental results is counted.On this basis,the method of applying this technology to waterway surveys on the Yangtze River is discussed,and its measurement accuracy is analyzed.The results show that when base stations in the Yangtze River CORS system are used to solve PPK positioning data,the positioning plane accuracy can meet the requirements of relevant specifications,whereas the elevation accuracy is unstable.