Navstar GPS and GLONASS: Global satellite navigation systems☆
Navstar GPS and GLONASS: Global satellite navigation systems☆
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Navstar GPS 和 GLONASS：全球卫星导航系统☆
DOI：
10.1016/0094-5765(91)90020-6
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发表时间：
1991
影响因子：
3.5
通讯作者：
P. Daly
中科院分区：
文献类型：
--
作者：
P. Daly
美国和苏联分别开发的Navstar GPS和GLONASS卫星导航系统计划于1995年投入使用。这两个系统都能够在全球范围内连续不断地向民用界提供高精度的定位和/或定时基准。这两个系统已经有几颗卫星在轨道上，以便进行运行前测试。该文件讨论了㈠这两个系统截然不同的发射历史，㈡轨道计划使用方面的发展，㈢利用选择性可用性故意降低精度，㈣提供可能与其他卫星测距系统结合的Navstar全球定位系统/全球轨道导航卫星系统联合民用卫星导航系统的计划进展，以及㈤这两个系统的现状。
Both the Navstar GPS and GLONASS satellite navigation systems developed respectively by the U.S.A. and the Soviet Union are now planned to become operational by 1995. Both systems are capable of providing the civil community with high-precision position-fixes and/or timing references on a continuous, world-wide basis. Already both systems have several satellites in orbit in order for pre-operational testing to be conducted. The paper discusses (i) the widely-differing launch histories of both systems, (ii) developments in planned use of orbits, (iii) the deliberate degradation of accuracy by the use of selective availability, (iv) progress in plans to provide a joint Navstar GPS/GLONASS civil satellite navigation system possibly integrated with other satellite ranging systems and (v) current status of both systems.