Part I: BeiDou navigation satellite system's development

As a navigation satellite system independently developed by China, BeiDou Navigation Satellite System has become one of the world's leading navigation satellite systems. BeiDou system was originally built in 2000, after continuous improvement, it now has the ability to cover the world. By 2021, BeiDou has deployed 55 satellites around the world, including 5 geostationary satellites and 50 medium-circle orbit satellites, forming a global navigation service network.

BeiDou system has a wide range of applications around the world, including transportation, fishery, surveying and mapping, military, aerospace and many other fields. In the field of transportation, the application of BeiDou system has become an important support for the efficient development of China's logistics industry. Through the BeiDou system, logistics enterprises can locate vehicles, perform path planning and implement transportation monitoring in order to improve transportation efficiency and safety. In the field of fishery, BeiDou system can provide services such as fishing vessel positioning and marine meteorological monitoring, help fishermen to improve the efficiency of fishery resource development and management. In addition, BeiDou system is widely used in surveying and mapping, military command, aerospace and other fields, provides high-precision positioning and navigation services for related industries.

Part II: BeiDou navigation satellite system's application in China

Logistics industry: China's logistics industry is one of the important areas of BeiDou system's application. For example, SF Express uses BeiDou system to realize real-time monitoring and scheduling vehicles across the country, improve transportation efficiency and punctuality. The application of BeiDou system enables SF to accurately track the location of packages, adjust routes and provide better logistics services.

Agriculture: The application of BeiDou system in agricultural field has also made remarkable achievement. For example, BeiDou system can provide positioning and navigation services for agricultural machinery and improve the operational efficiency and accuracy of agricultural machinery. In addition, BeiDou system can provide farmers agricultural meteorological information, help farmers grow food in scientific way, and improve agricultural production efficiency.

Part III: BeiDou navigation satellite system's development and application in the future

BeiDou system has a lot of development opportunities in China and has a wide range of application scenarios. First of all, with the continuous improvement and upgrading of BeiDou system, its positioning accuracy and service quality will be further improved. It will provide high-precision navigation and positioning services for more industries, and promote the technological upgrading and innovation of related industries. Secondly, BeiDou system has great application potentials in intelligent transportation, smart cities, driverless cars and other fields. With the continuous development of artificial intelligence and the Internet of Things technology, BeiDou system can be combined with these technologies to achieve breakthroughs and innovations. For example, in the field of intelligent transportation, BeiDou system can realize real-time monitoring and navigation of vehicles, optimize traffic routes, and improve traffic efficiency and safety. In addition, BeiDou system has important applications in the field of national defense and security. As an independent navigation satellite system, BeiDou system can provide high-precision positioning, navigation and timing services for military operations. In the context of informationized warfare and the complex situation of cyber security, an independent and controllable system is very important to national security and military strategy.

In the case of Sino-U.S. competition, BeiDou system has a unique opportunity. Firstly, BeiDou system becomes an important support for China in the field of navigation satellites with its worldwide coverage. Besides, in competition with other navigation satellite systems such as GPS, BeiDou system provide better service and performance, which attracts more countries and regions to pick BeiDou system as their first choice for navigation satellite services. Secondly, China's progress in satellite manufacturing and launching capabilities provide strong support for the development of the BeiDou system. In international competition, independence and autonomy of BeiDou system bring greater influence to China, and promote China's technological innovation and industrial development in satellite navigation.

To sum up, BeiDou system has made remarkable achievements as a navigation satellite system independently developed by China. It has broad development space and application scenarios in China. Nowadays,  in the context of Sino-US competition, BeiDou system has more opportunities with its worldwide coverage, independent controllability, and technological advantages. With the continuous improvement and application expansion of BeiDou system, it is believed that it will make greater contributions to China's economic development, scientific and technological innovation and national security.