【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。更多还原

【Abstract】 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.更多还原