Science. 1972 Oct 27;178(4059):405-6. doi: 10.1126/science.178.4059.405.
Measurements of the range to the Beacon Explorer C spacecraft from a single laser tracking system at Goddard Space Flight Center have been used to determine the change in latitude of the station arising from polar motion. A precision of 0.03 arc second was obtained for the latitude during a 5-month period in 1970.
从戈达德太空飞行中心的一个激光跟踪系统对“信标探险家 C”号航天器的距离测量，被用来确定由于极移引起的站纬度的变化。在 1970 年的 5 个月期间，纬度的精度达到了 0.03 角秒。
