我国今年计划发射 1 至 3 颗北斗组网备份卫星，提高系统稳健性
近日，据中国新闻网报道，中国卫星导航系统管理办公室副主任陈谷仓介绍，今年我国计划发射 1 至 3 颗北斗组网备份卫星，进一步提升星座稳健性和可用性。2020 年 6 月，由 24 颗中圆地球轨道卫星、3 颗地球静止轨道卫星和 3 颗倾斜地球同步轨道卫星组成的北斗三号卫星导航系统完成部署。2020 年 7 月，北斗三号系统正式开通全球服务。央视新闻于 3 月报道称，我国北斗三号全球卫星导航系统自 2020 年建成开通以来，运行连续稳定可靠，持续提供功能强大的卫星导航服务，高精度、短报文等特色服务能力已得到充分验证。据统计，全国目前已有超过 790 万辆道路营运车辆、4.7 万多艘船舶、4 万多辆邮政快递干线车辆应用北斗系统，近 8000 台各型号北斗终端在铁路领域应用推广。当然，还有IT之家小伙伴熟知的支持北斗短报文通信功能的手机，自华为 Mate 50 系列以来，这项技术已开始在部分高端智能手机中推广。中国卫星导航系统管理办公室表示，在加速推进北斗规模应用市场化、产业化、国际化发展的同时还将积极发展多种导航定位授时技术，2035 年前建成以下一代北斗系统为核心，更加泛在、更加融合、更加智能的国家综合时空体系，提供基准统一、覆盖无缝、安全可信、便捷高效的定位导航授时服务。
GPS芯片才40nm 北斗为何要上22nm工艺？解释来了
中国的北斗卫星导航定位系统完成了所有卫星发射，7 月底正式开通全球服务。与此同时，基于北斗的芯片也在快速升级，28nm 工艺的已经量产，22nm 工艺的北斗芯片明年就要量产了。 22nm 工艺在 2020 年的今天也是先进工艺，特别是很多 GPS 芯片依然停留在 40nm 工艺上，为什么国内公司在北斗芯片上这么激进呢？ 对于这个问题，深圳华大北斗科技有限公司北京分公司总经理葛晨在采访中介绍，目前一些较为成熟且性价比较好的导航定位芯片工艺采用的是 40nm CMOS 工艺，具备低功耗、低成本、低风险等诸多优势。 但是若想与各行各业进行更好的融合，芯片需要在更先进制程上进行演进。 葛晨表示，北斗芯片进入 22nm 后，意味着能够在单一芯片上集成微处理器、模拟 IP 核、数字 IP 核和存储器、外围接口等，具备集成度高、功能强、功耗低、尺寸小等优点，可以有效地降低电子/信息系统产品的开发成本，缩短开发周期，提高产品的竞争力，是芯片技术发展的必然趋势。 总的来说，北斗芯片目前不仅仅是一种导航定位芯片，它的应用范围极为广泛，如果与其他系统集成，那么芯片越小、集成度越高自然会更好，这也是北斗率先采用先进工艺的原因。
China's Beidou No. 3 system "Final Star" is scheduled to launch next month
On May 14, a reporter from CCTV interviewed Ran Chengqi, director of China Satellite Navigation System Management Office. Ran Chengqi said that China plans to launch the last Beidou satellite next month, which is also the "end star" of China's Beidou-3 system. The last satellite of the Beidou-3 system to be launched is a geostationary satellite. Prior to this, China's Beidou system has provided services to the world.Ran Chengqi, Director of the China Satellite Navigation System Management Office: Our Beidou (No. 3 system) has a total of 30 satellites, and now has 29 satellites, and the last satellite. At present, both the satellite and the rocket have entered the launch site, and we are preparing for the pre-launch work, which is expected to be implemented as planned.Beidou No.3 system is the third step of the construction of Beidou satellite navigation system in China. After completion, it will provide services to the whole world. After the successful launch of the satellite to be launched next month, it will be officially put into operation after a period of on-orbit operation.Ran Chengqi, Director of the China Satellite Navigation System Management Office: After the launch of this satellite, at an appropriate time this year, we will announce the completion of the global system and provide all of our Beidou services, including basic services such as this, as well as high precision Service, Beidou short message service, etc., we will have a comprehensive service opening, will also bring new highlights to the world satellite navigation.
China's BeiDou III system will be fully completed by 2020
On December 27, the State Council Office held a press conference on the first anniversary of the global service provided by the Beidou III system. Ran Chengqi, director of the China Satellite Navigation System Management Office and spokesperson of the Beidou Satellite Navigation System, stated that in 2019 all Beidou-3 medium-Earth Earth Orbit (MEO) satellites will be networked, marking the completion of the deployment of the core constellation of the Beidou-3 system. By June 2020, it plans to launch two more geostationary orbit satellites, and the Beidou-3 system will be fully completed. In 2025, a more comprehensive, integrated, and intelligent national integrated positioning and navigation timing system with the Beidou system as the core will be built.On December 27, the stock prices of satellite navigation companies such as Huashang Navigation, Zhonghaida, and Big Dipper all rose to varying degrees. Data show that the total output value of China's satellite navigation and location service industry reached 301.6 billion yuan in 2018, an increase of 18.3% over 2017. Among them, Beidou contributed 80% to the core output value of the industry. Ran Chengqi predicts that the scale of this industry will exceed RMB340 billion-350 billion this year, and it will maintain a growth rate of about 20% in the future.Build a characteristic application service systemRan Chengqi said that on November 19, 2018, China completed a basic system consisting of 19 Beidou navigation satellites, and will provide global services by the end of the year. This year, China has completed the launch of 7 arrows and 10 stars, and completed the deployment of a core constellation consisting of 24 medium orbit satellites. "Based on the ability to provide global services last year, it is more reliable, with higher accuracy and better performance. The completion of the deployment of the core constellation indicates that the Beidou III has entered a critical stage of finalization."Currently, Beidou is used for satellite navigation of most smartphones. Ran Chengqi said that in addition to providing basic services of positioning, timing and navigation, Beidou satellite navigation system also has many characteristic application service systems.The 1.0 version of the satellite navigation system application service system released on the site shows that there are six types of applications, including satellite-based enhanced services, precision single-point positioning services, regional short message communication services, global short message communication services, ground-based enhanced services, and international search and rescue service. According to Ran Chengqi, these six types of distinctive applications are the characteristics that distinguish Beidou from other innovative applications of navigation systems.While improving the system construction, the service capability of the Beidou III system is also improving. According to Ran Chengqi, Beidou System has improved the system's intelligent operation and maintenance capabilities to ensure continuous and stable operation. Service performance, availability, and continuity have reached the expected requirements. Performance levels and elevation positioning accuracy are better than 5 meters. Next year, the BeiDou-3 system will provide users with diversified services with higher accuracy, better performance and stronger functions.Ran Chengqi said that the construction of the Beidou short message application service platform has been started. It will be combined with mobile communication technology in the future to provide more convenient services for mass users. "The volume, weight, and power consumption will be greatly reduced. It will enter smart terminals such as mobile phones. This is a very important innovative service."In terms of ground-based enhancement services, Beidou Satellite Navigation System combines traffic, surveying, mapping, earthquake, meteorology, and land and other industry monitoring station network resources. More than 2,000 reference stations have been built to provide real-time meter-level, decimeter-level, and centimeter-level enhanced positioning accuracy service. At present, the service has more than 400 million users worldwide and provides more than 1 billion services per day.Ran Chengqi revealed that with the advent of the 5G commercial era, Beidou is accelerating the integration with new technologies such as new-generation communications, blockchain, and artificial intelligence. The business integration of Beidou with traditional applications such as transportation, agriculture, forestry, animal husbandry and fishing, and power and energy has continued to deepen, the scale has been further expanded, and the results have been further manifested. For example, the dynamic monitoring system for operating vehicles constructed and operated by the Ministry of Transport has more than 6.5 million vehicles connected to the network, and it is making in-depth progress in railway transportation, inland navigation, ocean navigation, air transportation and transportation infrastructure construction management.Industrialization takes another stepRan Chengqi introduced the latest progress of Beidou industrial chain industrialization at the press conference.22nm process RF baseband integrated navigation and positioning chip supporting the new signal of BeiDou III, which is smaller, lower power consumption and higher accuracy, has achieved large-scale applications; a new generation of BeiDou high-precision antennas, boards, and broadband RF chips Research and development of other series of products have been completed, and the performance indicators have continued to improve, and they have been equipped for large-scale application and promotion. Overseas mainstream manufacturers have launched basic products of the new signal of Beidou III.According to the "China Satellite Navigation and Location Services Industry Development White Paper (2019)", the number of enterprises and institutions in China's satellite navigation and location services industry is currently about 14,000, with more than 500,000 employees. As of the end of 2018, the total number of listed companies and NEEQ companies in the industry was 51. Key technologies such as domestic Beidou chips and modules have made further breakthroughs in 2018, with performance indicators comparable to similar international products, and have formed a certain price advantage. By the end of 2018, the cumulative total of China's satellite navigation patent applications had exceeded 60,000, ranking first in the world. The number of patents published in 2018 reached 12,684, breaking a new high again.The above white paper shows that in 2018, China's regions with traditional development advantages in satellite navigation and location service industries will further increase their efforts and comprehensively promote the innovative development of the Beidou industry. In 2018, the five major areas of satellite navigation and location service industry development in the Pearl River Delta, Beijing-Tianjin-Hebei, the Yangtze River Delta, central and western regions achieved an overall output value of 238.8 billion yuan, accounting for 79.6% of the total output value of the national satellite navigation and location service industry.