Sagnac效应的模型构建及精度分析  

Sagnac Effect Computational Model and Precision Analysis

作　　者：索龙龙[1] 吕晶[2] 李飞龙[3] 黄罗生[4] 

机构地区：[1]解放军理工大学通信工程学院研究生2队 [2]解放军理工大学通信工程学院 [3]解放军理工大学通信工程学院研究生3队 [4]中国人民解放军61716部队

出　　处：《军事通信技术》2013年第1期13-16,共4页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(60972061;60972062;61032004);国家高技术研究发展计划(863计划)资助项目(2012AA121605;2012AA01A503;2012AA01A510)

摘　　要：在地面站间远距离时间传递方式中,卫星双向时间频率传递法和卫星共视法发挥着重要作用。但是卫星双向时间频率传递法和卫星共视法均存在Sagnac效应,在一定程度上影响了时间传递的精度。而已有Sagnac效应的计算公式只适用GEO卫星,文章从Sagnac效应的产生机理出发,利用卫星或接收机的速度矢量以及位置矢量,建立一种通用的Sagnac效应计算模型。通过STK和MATLAB联合仿真验证了模型的正确性,并仿真了GEO、MEO卫星的Sagnac效应。Among the methodologies of time transfer, Two-Way Satellite Time Transfer （TWSTT） and satellite common-view time transfer play an important role in modern communication, global satellite navigation and precision metrology. However, the precision of both TWSTT and the satellite common-view time transfer is badly minished by the Sagnac effect. The cause of the Sagnae effect and the traditional computational formula were firstly introduced. Then, with the velocity-vector, a new model based on the mechanism of formation was established. Furthermore, the Sagnac effect between different earth stations and GEO satellite or MEO satellite was co-simulated through STK and MATLAB, which are compared with the value calculated through the formula. Compared with the traditional formula, the new model is in more common use, and overcomes the defects of the traditional formula. Its orecision is raised bv 1 00 ns.

关 键 词：对地静止卫星 中轨卫星 精度分析 

分 类 号：TN927[电子电信—通信与信息系统]