双波长卫星激光测距  

Two-Color Satellite Laser Ranging

作　　者：张忠萍[1] 李人东[1] 杨福民[1] 扈荆夫[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《天文学进展》2005年第2期99-109,共11页Progress In Astronomy

基　　金：国家自然科学基金资助项目(10373022)

摘　　要：双波长卫星激光测距不必借助大气改正模型,利用双波长往返时间差就可以进行大气折射改正。采用皮秒级事件计时器等技术测量往返时间差,修正精度可以达到毫米量级。介绍了这一领域的研究进展、双波长大气改正的基本原理,分析了双波长激光测距的精度,最后对双波长卫星激光测距前景进行了展望。Freed from the atmospheric model, two-color satellite laser ranging could determine the atmospheric correction by measuring the differential time of flight between the color pairs directly. With Picosecond Event Timer and other techniques measuring the differential time of flight, the accuracy of the atmospheric delay could achieve millimeter level. The present paper introduces the research progress in this field, the principle and the corresponding formula of the atmospheric correction, and analyzes the measuring precision. The future for two-color satellite laser ranging is also prospected.

关 键 词：天文观测设备与技术 双波长卫星激光测距 综述 飞行时间差 大气改正 大气模型 波长组合 

分 类 号：P228.5[天文地球—大地测量学与测量工程]