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
【定位原理】
北斗卫星地图是主动式双向测距二维导航。地面中心控制系统算法，供用户三维定位数据。gps是被动式伪码单向测距三维导航。由用户设备独立解算自己三维定位数据
【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
The most professional Beidou satellite navigation system the Chinese own Beidou positioning system!
Beidou Satellite Navigation Map provides the latest satellite map of 2020!
How high is the face of the earth! Let's spy on the geological beauty of ghosts and awesome works so beautiful that you suffocate!
Travel through China and use any means of transportation for navigation
Suitable for car bus and walking route planning to any Chinese address
GPS navigation maps for cities traffic conditions and public transportation routes
【Coverage】
The Beidou satellite map covers the global regional system. The coverage range 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 time on the earth at any time (in fact 11 more satellites can be observed)
【basic data】
The Beidou satellite map is to set two geostationary satellites with an equatorial angular distance of about 60° on the earth’s equatorial plane and gps is to set up 24 satellites on 6 orbital planes with an orbital equatorial inclination angle of 55° and an orbital plane equatorial angle distance of 60°. The navigation satellite is in quasi-synchronous orbit orbiting the earth for 11 hours and 58 minutes
【Positioning principle】
The Beidou satellite map is an active two-way two-dimensional navigation. Ground central control system algorithm for users to three-dimensional positioning data. GPS is a three-dimensional navigation of passive pseudocode one-way ranging. Solve your own 3D positioning data independently by user equipment
【positioning accuracy】
The three-dimensional positioning accuracy of the Beidou satellite map is about ten meters and the timing accuracy is about 100ns. GPS three-dimensional positioning accuracy has been increased from 16m to 6m c/a code has been increased from 25-100m to 12m and the timing accuracy is about 20ns