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查看GPS信息app，无广告，开源，安装包小，可识别全球各导航系统。
蓝奏云直达链接：https://rgh.lanzous.com/iFs5Vdzlq5a
注意在室外查看卫星数量！
gitHub地址：https://github.com/barbeau/gpstest
my country's high-speed maglev research and development made important new breakthroughs The 600 km/h high-speed maglev test prototype developed by CRRC Sifang Co., Ltd. was successfully tested on the maglev test line of Shanghai Tongji University this morning. The development of a high-speed maglev transportation system at a speed of 600 kilometers per hour is a key special topic of the "Advanced Rail Transit" national key research and development plan of the Ministry of Science and Technology.
The project is organized by CRRC and CRRC Sifang Co., Ltd. is responsible for bringing together the domestic high-speed rail and maglev resources, and collaborating with more than 30 companies, universities, and research institutes to tackle the key issues of high-speed maglev core technology. The intellectual property rights high-speed maglev engineering system with a speed of 600 kilometers per hour has formed China's high-speed maglev industrialization capability. Since the project started in July 2016, after nearly four years of scientific and technological research, the project team broke through the key core technology of the high-speed maglev series and successfully developed a test sample vehicle. After ground debugging and static testing, the vehicle entered the line dynamic operation test. The first test run.
According to Ding Sansan, the person in charge of the subject of high-speed maglev and deputy chief engineer of CRRC Sifang Co., Ltd., high-speed maglev is a strong coupling system including four major systems including vehicles, traction power supply, operation control communication, and line and track. It can initially verify the interface relationship and coupling characteristics between high-speed maglev systems under dynamic conditions, providing support for the verification and optimization of key performance of the system and core components.
CRRC Sifang and Tongji University and other research units carried out the test. On the maglev test line, the test sample car was tested for the first time in joint system, and carried out dynamic operation tests under various working conditions, including different track beams and turnouts, small curves, ramps, zone switching, etc., and completed more than 200 seven major projects This project has conducted comprehensive tests on key performances such as suspension guidance, speed measurement positioning, vehicle-rail coupling, ground traction, and vehicle-ground communication.
"Under the conditions of multi-operating test conditions, the vehicle's suspension guidance is stable and the operating condition is good. The key technical indicators meet the design requirements and meet the design expectations." Ding Sansan said.
The successful trial run of the test prototype achieved a breakthrough from static to dynamic operation, and obtained a large amount of key data. The key performance of the high-speed maglev system and core components was initially verified, which provided for the development and optimization of the subsequent high-speed maglev engineering prototype. Important technical support.
According to reports, the research and development of the high-speed maglev project is progressing smoothly, and the development of five marshalling engineering prototypes is also steadily advancing. According to the plan, the prototype system of the high-speed maglev project with a speed of 600 kilometers per hour is expected to be rolled out by the end of 2020, and a full set of high-speed maglev technology and engineering capabilities will be formed. In the future, through the construction of a high-speed maglev demonstration project and related operations such as 600km/h line operation, this technology can promote the continuous innovation and industrialization of the technology, and promote the upgrading of my country's high-end equipment manufacturing and the development of strategic emerging industries.
As an emerging high-speed transportation mode, high-speed maglev has the advantages of high speed, fast, safe and reliable, strong transportation, comfortable and punctual, green and environmental protection, and low maintenance costs. It has a variety of application scenarios, and can be used for long-distance transportation, that is, "corridor" traffic, forming high-speed corridors between large hub cities or urban agglomerations, promoting inter-regional collaborative development; and suitable for short- and medium-distance passenger transportation, that is, "commuting" ", "Urbanization" transportation, used for commuting in big cities or intercity connection of neighboring cities in urban agglomerations, creating a half-hour to 1-hour economic circle, and promoting the development of "integration" and "co-urbanization" of metropolitan areas and urban agglomerations .
600 km/h high-speed maglev fills the speed gap between high-speed rail and air transportation, and can form a more reasonable, efficient, flexible and convenient multi-dimensional transportation structure for aviation, high-speed rail, high-speed maglev and urban traffic, to meet the needs of different people. In 2019, high-speed maglev was included in the national "Outline of the Construction of a Powerful Transportation Country" as a frontier key technology. The development of a high-speed maglev transportation system at a speed of 600 kilometers per hour will become an important supplement to China's high-speed transportation, help the implementation and promotion of the strategy of a powerful transportation country, and enrich China's modern comprehensive transportation system to achieve the continuous leading of China's rail transportation technology and seize international competition. The strategic commanding height has great and far-reaching significance.
6月23日9时43分，我国在西昌卫星发射中心用长征三号乙运载火箭成功发射第55颗北斗导航卫星。卫星顺利进入预定轨道，后续将进行变轨、在轨测试、试验评估，适时入网提供服务。
随着第55颗北斗导航卫星顺利入轨，我国提前半年完成北斗三号全球卫星导航系统星座部署目标。
此次发射任务取得圆满成功标志着北斗三号全球星座部署全面完成，也标志着北斗卫星导航系统“三步走”战略任务圆满收官。
这是我国从航天大国迈向航天强国的重要标志，也是“十三五”期间我国实现第一个百年奋斗目标过程中航天领域完成收官的首个国家重大工程。
6 月 16 日，中国北斗卫星导航系统官微宣布，发射北斗三号最后一颗全球组网卫星的长征三号乙运载火箭在临射前测试过程中，发现产品技术问题，发射任务推迟，发射时间待定。
据悉，我国北斗三号全球卫星导航系统最后一颗组网卫星（第 55 颗组网卫星）发射窗口原定为 6 月 16 日 10 时 11 分至 10 时 50 分，瞄准窗口前沿实施发射。
北斗三号全球卫星导航系统最后一颗组网卫星发射任务推迟后，重新发射的窗口确定为6月23日9时43分。
本月初，北斗卫星导航系统的第 54 颗卫星，也就是北斗三号系统地球静止轨道卫星(GEO-3)，已经完成在轨测试、入网评估等工作，正式入网工作，使用卫星编号 60 提供定位导航授时服务。
资料显示，2009 年，北斗三号系统建设启动。到 2020 年，完成 30 颗卫星发射组网，全面建成北斗三号系统。这 30 颗卫星中，有 3 颗地球静止轨道（GEO）卫星、3 颗倾斜地球同步轨道（IGSO）卫星，和 24 颗中圆地球轨道（MEO）卫星。
这次发射的卫星，是一颗地球静止轨道（GEO）卫星，也是北斗全球卫星导航系统星座部署的收官卫星。
目前，北斗的服务由北斗二号系统和北斗三号系统共同提供，2020 年后，将平稳过渡到以北斗三号系统为主提供。
北斗三号在北斗二号的基础上，进一步提升性能、扩展功能，为全球用户提供定位导航授时、全球短报文通信和国际搜救等服务；同时在中国及周边地区提供星基增强、地基增强、精密单点定位和区域短报文通信服务。
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