Research and Application of GNSS Solution Model and Parameter Selection for Safety Monitoring of Longyangxia Dam
Through the analysis of GNSS monitoring data of Longyangxia dam,it is concluded that how to determine the scientific solution parameters and solution model is the key to solve the problem of monitoring error overrun,and the key to further improve the accuracy and reliability of GNSS monitoring in Longyangxia dam.This paper takes GNSS baseline as the research object,studies the influence of differ-ent observation sampling interval,troposphere model,ionosphere model,carrier frequency combination and other factors on the accuracy and reliability of GNSS baseline solution,so as to find out the optimal solution parameters and solution strategy model which are used to verify the results in Longyangxia dam.The results show that the reliability of GNSS monitoring data after using the optimal solution param-eters and solution strategy is higher than the original solution(the law of the previous solution results is unapparent),and the accuracy is improved by about 30%～50%.This research method provides a new idea for improving the accuracy of GNSS monitoring,which is in-novative and practical.
万方数据
维普
