天文大气折射的级数展开式  

SERIES EXPANSION OF ASTRONOMICAL ATMOSPHERIC REFRACTION

作　　者：张捍卫[1] 丁安民[1] 雷伟伟[1] 

机构地区：[1]河南理工大学测绘学院,焦作454003

出　　处：《大地测量与地球动力学》2011年第4期60-62,79,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41040035);河南省科技创新人才杰出青年科学基金(094100510023);河南省基础与前沿研究项目(082300460140)

摘　　要：对天文大气折射的级数展开理论进行了研究,给出了新的级数展开式。新的级数展开式能够展开到任意阶次项,并且达到了亚毫角秒的理论精度;另外,把地面附近的位相折射指数作为未知数单独提出来,适应了光学技术在不同观测波长情况下的处理,并给出了以视天顶距正切为引数的级数展开式。这一成果将可完全取代普尔科沃大气折射表公式,也可以利用该方法进行射线跟踪的理论研究。The correction of Astronomical Atmospheric Refraction（AAR） is one of the important topics in as- tronomy and geodesy. On the basis of the literature 1 and 2, series expansion theory of AAR was restudied, a new series expansion was provided. The new expansion can expanded to the arbitrary order and times items, and reached the sub-milli-arc-second theoretical accuracy. In addition, the phase atmospheric refractive index near the ground had been extracted from the expansion, as a single unknown parameter,so, new expansion can be adapted to different observation wavelengths processing of optical technology. Finally, the new series expansion making tangent of visual zenith distance as a argument is given. This work will completely replace the formula in AAR table of Pulkovo Observatory. This method can also be applied to the theory of ray tracing.

关 键 词：天文大气折射 级数展开式 大气折射指数 亚毫角秒精度 普尔科沃大气折射表公式 

分 类 号：P172[天文地球—天文学]