Solidot: 日本准备将GPS精度提升到厘米级

Solidot

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日本准备将GPS精度提升到厘米级
http://solidot.org.feedsportal.com/c/33236/f/556826/s/39b39a54/sc/24/l/0L0Ssolidot0Borg0Cstory0Dsid0F39280A/story01.htm
Apr 24th 2014, 12:15

陌生人很容易在东京的城市森林中迷失，低精度的GPS系统也没什么帮助。这一切到2018年将会成为过去。三菱电机准备商业化厘米级的卫星定位技术。新定位技术被称为 Quazi-Zenith Satellite System（QZSS），增强GPS卫星信号，修正信号错误，提供更高精度的导航、定位和授时服务。今天的GPS接受器跟踪了4颗以上GPS卫星的距离计算接受器的位置。但由于GPS系统固有的错误，定位位置会偏差几米。QZSS利用轨道上的四颗卫星修正了GPS卫星的测量误差，将精度提升到厘米级。This entry passed through the Full-Text RSS service — if this is your content and you're reading it on someone else's site, please read the FAQ at fivefilters.org/content-only/faq.php#publishers.



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