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GPS是英文Global Positioning System(全球定位系统)的简称,是美国军方研发并部署的、以全球24颗定位人造卫星为基础,向全球各地全天候的提供三维位置、三维速度等信息的一种无线电导航定位系统。其主要目的是为陆海空三大领域提供实时、全天候和全球性的导航服务,并用于情报搜集、核爆监测和应急通讯等一些军事目的。随着时代和技术的发展,GPS定位装置已经被广泛的应用于民用领域。利用GPS卫星、使用GPS定位装置可以对持机者进行空间定位并采集其一系列户外活动的位置点,每个点至少包括日期、时间、经度、纬度、海拔等信息;将位置点连接起来就形成了轨迹。这个轨迹精确标示了被定位对象的活动路线,记录了其活动时间、平均速度、行进里程等信息。因此,标记点和轨迹具有很高的实用价值。
GPS is short for Global Positioning System (GPS) in the United States. It is a radio developed and deployed by the U.S. military based on 24 global positioning satellites and providing all-weather information, such as three-dimensional position and three-dimensional speed, around the world Navigation and positioning system. Its main purpose is to provide real-time, all-weather and global navigation services for the three major areas of land, sea and air and for some military purposes such as intelligence gathering, nuclear explosion monitoring and emergency communications. With the development of the times and technology, GPS positioning device has been widely used in the civil field. Using GPS satellites, a GPS positioning device can be used to locate and collect a series of outdoor activity location points. Each point includes at least date, time, longitude, latitude, altitude and other information. Connect the location points Formed a track. This track accurately marks the activity route of the target object and records information such as its activity time, average speed and mileage. Therefore, the point and trajectory has a high practical value.