长波授时附加二次相位因子ASF误差分析  

Analysis the Error of the ASF in Long-wave Time Service

作　　者：李瑞敏[1,2] 苏建峰[2] 王娜[1,2] 

机构地区：[1]中国科学院研究生院,北京100080 [2]中国科学院国家授时中心,西安710600

出　　处：《宇航计测技术》2012年第3期17-20,共4页Journal of Astronautic Metrology and Measurement

摘　　要：为提高长波授时精度,分析了影响ASF误差的因素。主要针对米林顿法计算ASF中的地图测距误差、大地等效电导率误差和大地等效电导率区域分割误差,设计实验、采集数据、分析实验结果,并提出减小ASF误差的新方案。To improve the long-wave timing accuracy, the factors were analyzed that affected the errors of ASF. In the progress of calculated the ASF by Millington algorithm, experiments were designed to point at the errors of the map location, the ground conductivity and the region segmentation, then, col- lected data and analyzed the results. Finally, the new methods to reduce the errors of ASF put forward.

关 键 词：长波授时 附加二次相位因子 大地电导率 过渡区 

分 类 号：P127.1[天文地球—天体测量]