source:truck tracking webfleet solutions release time:2022-09-23 Hits: Popular:realtime gps tracker online
1. Space part The space part of GPS is composed of 24 working satellites, which are located 20,200km above the surface, evenly distributed on 6 orbital planes (4 in each orbital plane), and the orbital inclination is 55°. In addition, there are three active backup satellites in orbit. The distribution of satellites enables more than 4 satellites to be observed anywhere in the world and at any time, and navigation information can be pre-stored in the satellites. Due to atmospheric friction and other problems, the navigation accuracy of GPS satellites will gradually decrease over time. 2. Ground control system The ground control system consists of a monitoring station (Monitor Station), a main control station (Master Monitor Station), and a ground antenna (Ground Antenna). The main control station is located in Colorado Spring, Colorado, USA. The ground control station is responsible for collecting the information returned by the satellite, and calculating the satellite ephemeris, relative distance, atmospheric correction and other data. 3. User equipment part The user equipment part is the GPS signal receiver. Its main function is to capture the satellites to be tested selected according to a certain satellite cut-off angle, and to track the operation of these satellites. When the receiver captures the tracked satellite signal, it can measure the pseudo-distance from the receiving antenna to the satellite and the rate of change of the distance, and demodulate the satellite orbit parameters and other data. According to these data, the microprocessor computer in the receiver can carry out the positioning calculation according to the positioning solution method, and calculate the longitude, latitude, altitude, speed, time and other information of the user's geographic location. The receiver hardware and on-board software, as well as the post-processing software package for GPS data, constitute a complete GPS user equipment. The structure of the GPS receiver is divided into two parts: the antenna unit and the receiving unit. The receiver generally uses two kinds of DC power sources, inside and outside the machine. The purpose of setting the internal power supply is to replace the external power supply without interruption of continuous observation. The battery is automatically charged when the external power supply is used. After shutdown, the internal battery powers the RAM memory to prevent data loss. At present, various types of receivers are getting smaller and smaller in size and lighter in weight, which is convenient for field observation. The second is the user receiver. There are two kinds of single frequency and dual frequency. However, due to the price factor, the general users buy mostly single frequency receivers.
Read recommendations:
Gps speed limiter Manufacturing
Last article:What are the GPS signals
Next article:The theory of relativity provides the basis for GPS
Related Information
realtime tracking device
2023-03-16trailer gps tracker
2023-04-11Car gps tracking manufacture
2023-04-23portable gps tracker
2023-03-16GPS Tracker wholesaler
2023-04-11fleet solution webfleet solutions
2023-03-16gps vehicle tracker maker
2023-04-11Dog gps tracker Processing
2023-04-23fleet gps tracking maker
2023-04-23pet gps tracker cat supplier
2023-03-16P901 4G ID Card GPS Tracker Smart Walkie-talkie
2025-07-11G01 Smallest Personal Old People Mini GPS Tracker for Kids
2022-06-19G200NY -Cow/Camel GPS Tracker
2022-06-21YG119- Hunting Dog GPS tracker
2023-10-07TK100 (GT06) Vehicle Tracker
2022-06-20How to detect whether the car is installed with a GPS locator?obd-II port gps tracker distributors
2023-04-04The advantage of mobile phone GPS navigation.GPS Tracker for vehicles Production
2023-05-09GPS logistics tracking and monitoring platform architecture
2022-08-17GPS, more and more closely connected with our life
2022-12-07GPS positioning tracker function
2022-12-15A-GPS and GPRS
2022-12-08Solution to faults such as GPS vehicle management system not being online or offline.car gps tracker
2023-09-23gps vehicle tracker.The role of Beidou and GPS satellite vehicle positioning systems in transportati
2023-10-14Introduce the different types of the positioner
2023-03-07The difference between manufacturers compare the Beidou satellite navigation system and GPS navigati
2023-06-15What is the development of the car GPS positioner market development
2023-03-07Preparation before using GPS
2022-12-28Types of GPS
2022-09-24Car GPS function.GPS Tracker for vehicles distributors
2023-05-13How to do car GPS positioning in a car rental company.obd2 gps tracker verizon distributors
2023-03-16