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苹果Iphone14搭载北斗导航系统,北斗VS GPS有哪些优势?
2022-06-24 00:33:00 【硬小二】
概述
苹果最终还是妥协,根据中关村在线消息,苹果公司新发布的iPhone14将首次内置北斗导航芯片。苹果此举原因如何呢?和美国的GPS系统相比,北斗系统又有何优势呢?
北斗系统简介
北斗导航系统是我国自主研发的卫星导航系统,共计35课卫星。北斗的静态定位精度可达毫米级别,动态精度可达厘米级别,速度测量精度优于分米/秒级别,服务可用性优99%。
更加经济
近年来在我国大力公关芯片产业的大背景下,北斗芯片价格一降再降,单片价格已跌破6元,与GPS芯片单片约15元相比,北斗芯片成本方面更有优势。
频段与抗干扰
北斗卫星采用三频通信,相对于GPS卫星的双频通信,北斗卫星的定位精度会更高,且具有更强的抗干性能。
短报文技术
短报文技术是我国率先研发的,北斗导航系统搭载短报文通信技术,一次可传送多达120个汉字的信息,且可实现双向通信,这个特点大大拓展了北斗系统的应用场景。
授时精度更高
北斗的授时精度是全世界最好的,全世界范围内可达20纳秒,亚太地区更是可达10纳秒。由于GPS系统比较陈旧且升级缓慢,所以授时精度比北斗弱一些。
北斗卫星大有可为
苹果的妥协只是冰山一角,北斗卫星系统相对于GPS系统的优势明显,并且依托于中国这个全球最大的市场,后期的发展前景将无可限量。
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