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/转+翻译/翻译的北斗航天卫星系统的文章嘤(中英混.....

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发表于 2021-7-31 08:41:46 | 显示全部楼层 |阅读模式
[cp]Satellite laser ranging(SLR) is an unambiguous measurement technique and generates high accuracy satellite orbit data. All satellites in the BeiDou navigation satellite system(BDS) carried laser retro-reflector arrays(LRAs), so they can be tracked by ground SLR stations in order to provide the accurate observation data. The Shanghai astronomical observatory(SHAO) designed the LRAs, and also developed the dedicated SLR systems using a 1 m-aperture telescope and a transportable cabin-based SLR system with a telescopes of 60 cm aperture. These enable BDS satellite ranging during daytime and nighttime with centimeter-level precision, allowing highly accurate estimations of satellite orbits. Moreover, some of the BDS satellites are also equipped with laser time transfer(LTT) payloads, which were developed by the SHAO and China Academy of Space Technology(CAST), providing a highly accurate time comparison between the satellites and ground clocks. This paper describes the dedicated SLR system and the design of the LRAs for BDS satellites, as well as global SLR measurements. The SLR tracking data is used for evaluating the orbit accuracy of BDS satellites and broadcast ephemeris, with an accuracy of less than 1 m. The LTT measurements to BDS satellites for a single shot have a precision of approximately 300 picoseconds, with a time stability of 20 picoseconds in 500 s...


交通运输业是北斗导航卫星系统(BDS)最大的运营部分之一,具有多地点、长线路、宽范围、大机动性的特点。BDS在交通行业的应用,提高了智能,水平已发展至安全,绿色,共享交通。该刊在介绍BDS在交通运输业中的应用要求和特点的基础上,系统地介绍了BDS在交通运输业中的总体状况,涉及公路,水路,铁路、民航、邮政等行业。最后,展望了BDS在交通领域的应用前景。它在交通运输行业内确定了丰富的应用场景,用于培育以BDS为代表的先进技术,加强交通安全服务,保障应急通信,同时提高综合交通运输系统的运营效率以及管理水平。。。。     


注:本文原英文搬运自中国知网〈CNKI〉
       中文为自我翻译。[/cp]

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