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- 现在的北斗和全球定位系统（GPS）的差距有多少？ - 知乎
目前北斗和gps的卫星系统都能够实现全球覆盖，然而受不同国家政策友好程度的影响，gps在全球的实际覆盖范围要更广。 而且在南北极地区、极地海域等极端环境下，由于南北极散光效应和多路径等技术问题，北斗的控制和使用范围相比GPS还有待提高和完善。
- Map updates - Traverse Forum
Think the GPS companies gives GM and others discount on hardware as long as locked down so they can get some revenue for people to upgrade maps Be nice if they at least gave you a free map upgrade once a year But that would conflict with an ongoing revenue stream for a these companies
- How can I permanently disable Toyota GPS tracking?
So my new truck allows Toyota to read every bit of info from my truck in real time including my GPS location and speed Now I have already turned off their gracious "complementary" safety connect service connect but I am almost positive my truck's data can still be accessed by Toyota remotely if they desired
- GPS vs XM Antenna Wires - Tacoma World
ACC-SAT-TO2 from sonicelectronix and of course it had two XM adapters and no pioneer GPS adapter Amazon was able to send me the correct wires The connections for XM and GPS use the same connector and was wondering which is which I think this is GPS: and this is XM because it’s in the same harness as the radio antenna (shark fin) Thanks in
- 什么是全球导航卫星系统（GNSS）技术？ - 知乎
在 a-gps 系统中，gps 辅助服务器持续监测 gps 卫星，接收 gps 信号，获取导航电文，生成 gps 辅助数据。 GPS 辅助数据发送到蜂窝网络的基站中，并通过蜂窝网络传输到手机，从而使手机迅速确定自身大致位置以及所在位置的可见卫星。
- apple watch应该买GPS版还是蜂窝版？ - 知乎
又下了gps版的， 幸好官网14天包退，话说回来，蜂窝版真的实用吗？ 我算爱运动的，每周有4天是要户外跑6公里以上的，当初买watch也是看中运动这块，想不戴iPhone跑，试用了几次，不戴iPhone出去跑，发现自己也能接受，户外跑1个小时期间，其实也没有啥人联系
- GPS以及“北斗”卫星导航系统是怎样实现授时功能的？ - 知乎
北斗和gps的原理基本一致，出于种种考虑（你懂的），这里说下gps的授时原理。 gps的星座由24颗卫星组成，不同的卫星分配不同的伪随机码进行区别，卫星上一般都配有3-4台的原子钟以进行时间保持，同时地面上的主控站还会将修正数据（包括卫星轨道，时间修正等）不定期发给卫星，以使24颗卫星
- Issues with Onstar, WiFi, GPS, Supercruise | Traverse Forum
I have a 24 Traverse Z71 with similar problems Purchased in July A few weeks ago - No Onstar, no gps, WiFi, Supercruise… System test found code U1615 Apparently there is a service bulletin #PIT6214 with message #B19DA for this problem So GM is aware with no repair at this time
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