Global Positioning System

　　The Global Positioning System (GPS) is a high-precision radio navigation positioning system based on artificial earth satellites. It can provide accurate geographic location, vehicle speed and precise time information anywhere in the world and in near-Earth space. Yu GPS satellite system has been developed since the 1970s and was completed in 1994. Since its establishment, it has attracted many users with its high precision, all-weather, global coverage, convenience and flexibility. GPS plays a pivotal role in the rapid development of the logistics industry, and the logistics industry has therefore become the second largest consumer group facing GPS after the automobile market. Our daily courier tracking and personal travel all require GPS positioning services. Its main components include: space part, ground monitoring part and user equipment part. This is the focus of the exam.