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1979年秋美国航宇局(NASA)制定了统一跟踪网计划,准备将NASA两个地面跟踪网合并成一个统一网。合并两个跟踪网的建议是NASA总网规划组提出的并于同年10月提交给NASA最高管理当局。到1986年,合并后的跟踪网将使用哥达德地面航天跟踪和数据网以及喷气推进试验室滐空网的现有设备。通过组合和改进,这个统一跟踪网将有可能为当时的星际和高地球轨道任务提供支援。推动两网合并的动力来自技术和经济两方面。合并后的跟踪网应该有较高的灵敏度,应能为1936和1989年旅行者2号(Voyager2)飞行器与天王星和海王星相遇提供支援;还应能以大于现有滐空网10倍的数据率为高地球轨道和靠近行星的飞行器提供支援。合并后跟踪网的维护和操作费用应大大低于八十年代末期两个单独网所花费用的总和。文中回顾了决定合并NASA地面跟踪和数据网的起因,简要介绍了从1975年决定合并到八十年代中期NASA两个地面跟踪网计划的进展情况。本文是1981年6月提交给AIAA/NASA空间跟踪和数据系统会议报告的修改稿。
In the fall of 1979, NASA developed a unified tracking network plan to consolidate two NASA ground tracking networks into a single unified network. The proposal to merge the two tracking networks was proposed by NASA’s network planning team and submitted to NASA’s top management in October of the same year. By 1986, the combined tracking network will use existing equipment from the Goatdark space tracking and data network and the Jet Propulsion Laboratory. Through a combination and refinement, this unified tracking network will likely provide support for the then-current interstellar and high Earth orbit missions. The driving force behind the merger of the two networks comes from the technical and economic aspects. The combined tracking network should have a high degree of sensitivity and should be able to support Voyager 2 encounters with Uranus and Neptune in 1936 and 1989 and at a data rate greater than 10 times that of existing airlines Support high Earth orbit and aircraft close to the planet. The cost of maintaining and operating the combined tracking network should be well below the sum of the costs spent on two separate networks in the late 1980s. The article reviews the reasons for the decision to merge NASA ground tracking and data networks and briefly describes the progress of the two ground tracking network plans dating from 1975 to the mid-1980s. This is a revised version of the report submitted to the AIAA / NASA Space Tracking and Data Systems Conference in June 1981.