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倘若美國突然關掉GPS,全世界有哪幾個國家幸免只有兩個國家
2020-01-11 18:30  www.konga9ja.com

GPS全称全球定位系统,是以空中卫星为基础的高精度无线电导航定位系统,20世纪70年代美国最先研制,历时20年,斥资200亿美元,到1994年3月,美国GPS系统覆盖率高达为98%,为全球提供了服务。

GPS, a high-precision radio-navigation and positioning system based on aerial satellites, was first developed by the United States in the 1970s, for 20 billion US dollars, and by March 1994, the coverage of the GPS system was as high as 98 percent, providing services to the world.

美国全球定位系统包括绕地球运行的27颗卫星,其中24颗在轨运行,3颗备用,它们均匀分布在6个轨道上。每颗卫星离地面大概万公里,能连续发射一定频率的无线电信号。只要有便携式信号接收仪,处于全球任何一个位置,都将接收到卫星发出的特定信号。接收仪中的计算机只要选取4颗或4颗以上卫星发出的信号进行分析,就能确认接收仪持有者位置。

The United States Global Positioning System consists of 27 satellites orbiting the Earth,24 of them in orbit and three in reserve, which are evenly distributed in six orbits. Each satellite is about 10,000 kilometers from the ground and can transmit radio signals of a certain frequency continuously. As long as there is a portable signal receiver, in any position in the world, will receive a specific signal from the satellite. The receiver's position can be confirmed by the analysis of signals from four or more satellites.

GPS除了导航外,还具有其他多种用途,科学家监测地震靠它,汽车司机寻找路线靠它,军队行径方向靠它,就连导弹发射和航母舰艇都需要GPS,没有GPS发射出导弹就没有任何威力和杀伤力,航母舰艇会在大海中迷失方向。

Besides navigation, gps has a variety of uses. Scientists monitor earthquakes by it, car drivers find its way by it, the military's direction by it, even missile launches and carrier ships need gps. Without a gps missile, there is no power or lethality. Carrier ships are lost in the sea.

既然GPS作用这么大,倘若美国突然关掉GPS,我们还能正常生活吗?答案是肯定的,因为除了美国,这世界上还有两个国家,拥有同GPS一样强大的全球定位系统,其中一个是俄罗斯,另一个就是我们中国。

Since GPS is so powerful, if the United States suddenly shut down GPS, can we live a normal life? The answer is yes, because in addition to the United States, there are two other countries in the world that have the same powerful global positioning system as GPS, one of which is Russia and the other is our China.

俄罗斯有自己的定位系统,格洛纳斯系统最早开发于苏联时期。1993年,俄罗斯开始独自研发自己境内的全球卫星导航系统,2009年服务范围拓展全球,格洛纳斯共有30颗卫星协作,其中24颗卫星在轨工作,6颗卫星在轨备用,定位和导航误差范围仅为23m,就精准度而言处于全球领先水平。

Russia has its own positioning system, which was first developed in the Soviet Union. In 1993, Russia began to develop its own global satellite navigation system in its own territory, and in 2009 it expanded its services to a total of 30 satellites in GLONASS,24 of which were in orbit, six were in orbit, and the range of errors in positioning and navigation was only 23 m, leading the world in terms of accuracy.

我国独立研发的北斗卫星导航系统与美国GPS、俄罗斯格罗纳斯、欧盟伽利略系统并称全球四大卫星导航系统。北斗定位系统由39颗静止和非静止卫星组成,北斗一号精度在10米以内,北斗二号则可以精确到米,精准度超越GPS,预计很快实现全球覆盖。

China independently developed the Beidou satellite navigation system with the United States GPS, Russia Gronas, the European Union Galileo system known as the world's four major satellite navigation systems. The Beidou positioning system consists of 39 stationary and non-static satellites, with Beidou 1 accuracy within 10 meters, and Beidou 2 can be accurate to meters, accuracy beyond GPS, and is expected to achieve global coverage soon.

我国的北斗系统计划向全球用户免费提供定位、测速和授时服务,实现全球覆盖后,不止我国,全球都将受益。到时候,即便美国关掉了GPS了,全世界都不会受到影响!

China's Beidou system plans to provide free positioning, speed measurement and timing services to global users, to achieve global coverage, not only China, the world will benefit. In time, even if the United States turned off the GPS, the world will not be affected!