全球定位系统2024，Vol.49Issue(6)：84-88,5.DOI:10.12265/j.gnss.2024120
基于部分模糊度固定的GNSS高精度定位方法及地灾监测应用
GNSS high-precision positioning method based on partial ambiguity fixing and its application in ground disaster monitoring
摘要
Abstract
Aiming at the problem that the global navigation satellite system(GNSS)is easily disturbed by the external environment in the process of geological disaster monitoring and the quality of the observation value is low,the partial ambiguity resolution algorithm is realized by selecting the ambiguity subset according to the satellite elevation angle.The fast static mode is used to process the geological disaster monitoring data,and compared with the full ambiguity resolution algorithm,the timeliness,ambiguity resolution rate,Ratio and other aspects of different time resolution are analyzed.The results show that partial ambiguity fixing can effectively improve the fixing rate and the Ratio value.The results of the two fixed strategies are very close in accuracy,and the accuracy in the horizontal direction is better than 5 mm,and the accuracy in the vertical direction is better than 10 mm.Partial ambiguity resolution can effectively improve the availability of GNSS technology in the field of geological disaster monitoring.关键词
GNSS/部分模糊度固定/定位精度/时效性/地灾监测Key words
GNSS/partial ambiguity fixing/positioning accuracy/timeliness/disaster monitoring分类
天文与地球科学引用本文复制引用
李鹏程,师芸,束远明,董伟龙,周翱..基于部分模糊度固定的GNSS高精度定位方法及地灾监测应用[J].全球定位系统,2024,49(6):84-88,5.基金项目
国家自然科学基金资助项目(42174045) （42174045）
国家自然科学基金资助项目(41874012) （41874012）
