The GPS or the global positioning system is a utility which is in the ownership of United States.全球定位系统或全球卫星定位系统是一种实用工具这是所有权的美国。 This utility facilitates the clients with navigation, timing and positioning services or the PNT services.此实用工具方便客户与导航，定时和定位服务或PNT服务。 This organization includes three different segments namely the control segment, the user segment and the space segment.这个组织包括三个不同部分即控制部分，用户部分和空间部分。 The United States Air Force maintains, operates and develops the control segments and the space.美国空军保持，经营和开发的控制部分和空间。

The segment of the space contains a ostensible constellation of about 24 operational satellites which transfer one way signals which help to provide the current time and position of the GPS satellite.这部分的空间包含了星座的表面大约24业务卫星传输信号的一种方式，帮助提供当前的时间和位置的GPS卫星。 The segment of controls contains a universal monitor and stations of control which uphold the satellites in their respective orbits via intermittent command schemes and help in adjusting the satellite clocks.这部分的控制包含一个普遍的监测和站的控制，坚持卫星在各自的轨道上通过间歇性的指挥方案，并帮助调整卫星时钟。 The control segment tracks the satellites of the GPS; it uploads reorganized data of navigation and upholds status and health of the constellation of the satellite.控制部分轨道的卫星全球定位系统，它的数据上传改组导航和维护状况和健康的星座卫星。 The client segment or the user segment contains the GPS recipient equipment, that helps to receive the signals from the satellites of GPS and utilizes the transferred information to compute the clients 3-dimentional time and position.客户端部分或用户部分包含的GPS接受设备，可以帮助接收信号的卫星全球定位系统和利用转让信息来计算客户的三维时间和位置。

Have you already been to somewhere without even knowing where you really are?  With the continuing rise of our technology today, that particular situation will not happen to you any longer. Thanks for the car GPS navigation systems, which have now become pocket-friendly; we can now travel from one place to another without being “lost”.你已经没有的地方甚至不知道在那里你真的是什么？随着持续上升的今天我们的技术，即特殊情况将不会发生在你身上的任何更长的时间。谢谢您的汽车GPS导航系统，它现在已成为口袋友好;我们现在可以从一个地方运送到另一个地方，而“失去” 。

In addition to requiring faster processors than the handheld ones, car GPS units also offer enhanced navigation services to users.除了要求更快的处理器比手持的，汽车GPS装置还提供了增强的导航服务给用户。 Once installed with the unit, a moving vehicle may have the following features:一旦安装的单位，在行驶的车辆可具有以下特点：

GPS stands for Global Positioning System.全球定位系统随时为全球定位系统。 This system is a group of satellites that orbit the earth twice a day transmitting time and position data for latitude, longitude, and altitude.  A GPS tracking system receiver picks up this signal and is able to determine its location anywhere on the Earth.  This position and navigation information is vital for many different types of activities, including sailing.该系统是一组卫星，在地球轨道上一天两次，转递的时间和位置数据的纬度，经度和高度。一个GPS跟踪系统，接收拿起这个信号，并能确定其位置上的任何地方地球。这一立场和导航信息是非常重要的许多不同类型的活动，包括风帆。

Today’s GPS tracking system receivers are extremely accurate.  Their parallel multi-channel designs make them quick to lock onto satellites as soon as they are turned on, and they maintain locks even in severe weather.  On an average, GPS tracking systems are accurate within 15 meters.今天的GPS跟踪系统接收器是非常准确的。及其并行多通道设计，使他们很快就锁定卫星一旦打开，和他们保持的锁即使在恶劣的天气。平均，全球定位系统跟踪系统是准确的15米范围内。