一种改进的TurboEdit周跳探测算法  

A modified TurboEdit algorithm for cycle-slip detection

作　　者：潘林[1] 蔡昌盛[1] 戴吾蛟[1] 

机构地区：[1]中南大学测绘与遥感科学系,长沙410083

出　　处：《工程勘察》2014年第5期47-51,共5页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金资助项目(41004011)

摘　　要：当卫星高度角降低时,多路径误差及观测噪声会显著增加,导致使用传统的TurboEdit方法进行周跳探测时会出现许多误判现象。据此,提出了一种改进的TurboEdit方法,该方法将一个与卫星高度角有关的加权系数引入到周跳探测的过程中。结果表明,改进的TurboEdit方法可以大大减少周跳误判情况,并在低卫星高度角时可以探测出最小2周的周跳,在高卫星高度角时可以探测到最小1周的周跳。When the satellite elevation is very low, the muhipath error and measurement noise are significantly increased which will lead to the misjudgment of cycle-slip detection using traditional TurboEdit algorithm. Because of this, a modified TurboEdit algorithm is proposed. In the modified method, a weighted factor which closely relates to the satellite elevation is introduced into the cycle-slip detection process. The results indicate that the modified method can significantly reduce the fault rate of cycle-slip detection. Moreover, the modified method can detect the cycle-slip at a minimal two cycles for the low satellite elevation, and one cycle for high satellite elevation angles.

关 键 词：周跳探测 TurboEdit 卫星高度角 多路径误差 测量噪声 

分 类 号：P228.4[天文地球—大地测量学与测量工程]