ILS系统的极原点及其测站的长期漂移

THE POLAR ORIGIN AND THE SECULAR DRIFT OF STATION FOR ILS SYSTEM

本文比较了1962.0—1979.0期间ILS和BIH的地极座标,求出了ILS的极原点及其纬度观测站对于BIH系统在此期间的长期漂移,结果表明ILS系统的极原点对于BIH系统存在约0”.0013/年向西经约83.°4的长期漂移,但ILS极原点的长期漂移主要是极性的。

In this paper the ILS and BIH polar coordinates in the period from 1962.0 to 1979.0 are compared, and the secular drifts of ILS origin and ILS stations with respect to the BIH system in this period are derived. As a result, the rate of the ILS origin drift relative to the BIH system is some 0.0013 arcsecond per year, 83. °4 westwards, but the secular drift of the ILS origin is mainly of polar property.