用户体验优化
错误修复
最专业的北斗卫星导航系统，中国人自己的北斗定位系统！
北斗卫星导航地图提供2020最新卫星地图！
地球的颜值有多高！一起来窥探鬼斧神工的地质之美，美到你窒息！
游遍中国并使用任何交通方式进行导航
适用于到任何中国地址的汽车、公交与步行路线规划
用于城市、交通路况和公共交通路线的GPS导航地图
【覆盖范围】
北斗卫星地图覆盖全球区域系统。覆盖范围东经约70°一140°，北纬5°一55°。gps是覆盖全球的全天候导航系统。能够确保地球上任何地点、任何时间能同时观测到6-9颗卫星(实际上能多观测到11颗)
【基本数据】
北斗卫星地图是在地球赤道平面上设置2颗地球同步卫星的赤道角距约60°，gps是在6个轨道平面上设置24颗卫星，轨道赤道倾角55°，轨道面赤道角距60°，导航卫星为准同步轨道，绕地球一周11小时58分
【定位精度】
北斗卫星地图三维定位精度约十米，授时精度约100ns。gps三维定位精度目前己由16m提高到6m，c/a码目前已由25-100m提高到12m，授时精度日前约20ns
更新内容：
为您优化了体验细节。
The most professional Beidou satellite navigation system, the Chinese own Beidou positioning system!
Beidou satellite navigation map provides the latest satellite map in 2020!
How beautiful is the earth! Let's explore the uncanny geological beauty together, the beauty will take your breath away!
Travel around China and navigate using any mode of transportation
Applicable for car, bus and walking route planning to any address in China
GPS navigation maps for cities, traffic conditions and public transportation routes
【Coverage】
BeiDou satellite map covers the global regional system. The coverage area is about 70°-140° east longitude and 5°-55° north latitude. GPS is an all-weather navigation system covering the whole world. It can ensure that 6-9 satellites can be observed at any place on the earth at any time (in fact, 11 more satellites can be observed) [
Basic data]
The Beidou satellite map is the equatorial angle of setting 2 geosynchronous satellites on the earth's equatorial plane The distance is about 60°, GPS is to set 24 satellites on 6 orbital planes, the orbital equatorial inclination is 55°, the orbital plane equatorial angular distance is 60°, the navigation satellite is a quasi-synchronous orbit, and it takes 11 hours and 58 minutes to circle the earth [positioning principle
]
The Beidou satellite map is an active two-way ranging two-dimensional navigation. The ground center control system algorithm provides users with three-dimensional positioning data. GPS is a passive pseudo-code one-way ranging three-dimensional navigation. The user equipment independently calculates its own 3D positioning data
[Positioning accuracy]
The 3D positioning accuracy of the Beidou satellite map is about ten meters, and the timing accuracy is about 100ns. The GPS three-dimensional positioning accuracy has been improved from 16m to 6m, the c/a code has been improved from 25-100m to 12m, and the timing accuracy is about 20ns.