source:truck tracking webfleet solutions release time:2023-06-01 Hits: Popular:realtime gps tracker online
space
The space part of GPS is composed of 24 working satellites, which are located 20 200 km above the earth's surface, evenly distributed on six orbital planes (four for each orbital plane), and the orbital inclination is 55 °. In addition, there are four active backup satellites in orbit. The distribution of satellites enables the observation of more than 4 satellites anywhere and at any time in the world, and maintains a geometric image with good positioning and calculation accuracy. This provides continuous global navigation capabilities over time. The GPS satellite generates two sets of codes, one of which is called the C/A code (Coarse/Acquisition Code 11023MHz); A group called Procise Code (10123MHz) is controlled by the US military due to its high frequency, low interference, and high positioning accuracy. It has a password and cannot be interpreted by ordinary people, mainly serving the US military. After deliberately reducing the accuracy of the C/A code through measures taken, it is mainly open for civilian use.
ground control
The ground control section consists of one main control station, five global monitoring stations, and three ground control stations. The monitoring stations are equipped with precision cesium clocks and receivers that can continuously measure all visible satellites. The satellite observation data obtained by the monitoring station, including ionospheric and meteorological data, will be preliminarily processed and transmitted to the main control station. The main control station collects tracking data from various monitoring stations, calculates the satellite's orbit and clock parameters, and then sends the results to three ground control stations. The ground control station injects these navigation data and main control station commands into each satellite as it reaches the sky. This injection is performed once a day on each GPS satellite and the final injection is performed before the satellite leaves the injection station's operational range. If a ground station malfunctions, the navigation information stored in the satellite can still be used for a period of time, but the navigation accuracy will gradually decrease.
Read recommendations:
Next article:GPS user equipment
Related Information
simple gps tracking Solution
2023-04-23cat gps tracker maker
2023-04-11Dog gps tracker price
2023-04-23gps vehicle tracker Factory
2023-04-11real-time gps tracking wholesale
2023-04-23mini gps tracker Solution
2023-04-23CantrackGPS
2023-03-16van tracker webfleet solutions
2023-03-16gps vehicle tracker supplier
2023-04-11gps vehicle tracker wholesale
2023-04-23P60L Personal gps tracker
2022-06-21G900LM-4G Car Mini GPS Tracker
2025-03-256000mAh Magnetic Asset GPS Tracker
2025-03-31G200NY -Cow/Camel GPS Tracker
2022-06-21G03
2022-06-21What are the precautions for using the Beidou car GPS?plug & play Obd gps tracker Production
2023-04-14The difference between GPS positioning and GPS navigation tools.plug & play Obd gps tracker supp
2023-05-09GPS scheme from hard to soft.obd-II port gps tracker Production
2023-05-23GPS signal in the air
2022-11-08Design scheme of logistics tracking system
2022-11-22GPS user equipment
2023-06-01Car GPS reference labeling.GPS Tracker for vehicles manufacturer
2023-05-13Solar GPS positioning tracker solve worries
2023-02-23Gps speed limiter.The significance of installing GPS positioning system in automobile delivery vehic
2023-11-11The concept of static drift of the car GPS positioner and cause.plug & play Obd gps tracker manu
2023-03-25Features and functions of in car GPSD
2023-07-27The manufacturer believes what application scenarios are there in the Beidou GPS positioner.gps trac
2023-05-12What are the components of GPS
2022-09-23GPS search for stars.obd-II port gps tracker Manufacturing
2023-08-10Classification and cause analysis of lithium battery explosion
2022-10-18