摘要
由于变形监测的特殊性,带约束条件的GPS单历元算法在变形监测中已逐步得到了应用,但单历元模糊度分解的成功率则影响了该算法在实际应用中的可靠性。通过对单历元算法的进一步分析,发现候选坐标精度低是影响单历元算法成功率的一个重要因素,为解决这一问题,提出利用岭估计法来计算候选坐标,使候选坐标的精度得到提高,从而大大提高了单历元基线解算的成功率。
Since the particularity of deformation monitoring, GPS single epoch algorithm has been adopted in this field step by step. But the success rate of the single epoch ambiguity resolution affects the reliability. Therefore, the low accuracy of the candidate coordinates is found out, it is the main factor that affects success rate. In order to solve this problem, the ridged estimation method is used to get better accuracy of the candidate coordinates, and the success rate of single epoch ambiguity resolution is effectively improved.
出处
《工程勘察》
CSCD
北大核心
2007年第2期49-53,共5页
Geotechnical Investigation & Surveying
基金
国家自然科学基金项目资助(40574003)
关键词
变形监测
GPS
单历元
岭估计
deformation monitoring
GPS
single epoch algorithm
ridged estimation
