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为了探讨以激光进行人造卫星测距的跟踪方式,并获得设计制造的基础资料,研制了激光测距装置。主体是输出20兆瓦的红宝石激光器和光电接收器,安装在支座上,沿着预先由电子计算机计算的人造卫星的预测轨道进行程序跟踪。该装置的性能是,测量距离500～2,000公里的卫星时,系统精度可达5米,分辩率1.5米。该装置安装在东京天文台堂平观察所,作过实地试验,即1969年6月8日接收到了从美帝带有向后反射器的卫星GEOS-B以及法国的DIADEME卫星反射回来的激光,天文台的电子计算机的检验结果表明,得到的测距值的确是由人造卫星的反射光所致。本文就跟踪方式、装置概要和实地试验结果作一简要的论述。
In order to discuss the tracking method of laser ranging satellite and obtain the basic data of design and manufacture, a laser ranging device was developed. The main body was a 20-megawatt ruby laser and optoelectronic receiver mounted on a stand and tracked along a predictive orbit of a satellite previously calculated by an electronic computer. The performance of the device is that when measuring satellites with a distance of 500-2,000 km, the system accuracy is up to 5 meters with a resolution of 1.5 meters. The device was installed at the Tomokazu Observatory at the Tokyo Astronomical Observatory and conducted a field trial that received a laser beam reflected from the US imperialism GEOS-B with a retro-reflector and the DIADEME satellite from France on June 8, 1969. The Observatory’s Computer test results show that the measured value is indeed caused by the satellite reflected light. In this paper, a brief discussion of tracking methods, device summary and field test results is given.