source:truck tracking webfleet solutions release time:2023-05-12 Hits: Popular:realtime gps tracker online
The 24 GPS satellites run around the earth at a height of 20,000 kilometers from the ground and run around the earth with a 12 -hour cycle, so that at any time, any more than 4 satellites can be observed at any point on the ground. Because the position of the satellite is accurate, in the GPS observation, we can get the distance from the satellite to the Beidou newspaper machine. Using the distance formula in the three -dimensional coordinates, the three satellites can be used to form three equations to solve the position of the observation point. (X, y, z). Considering the error between the clock of the satellite and the receiver clock, there are actually 4 unknown, the difference between X, Y, Z, and clocks, so the 4th satellite needs to be introduced to form 4 squares for solving, so as to obtain the observation point of the observation point Lavels and heights.
In fact, the Beidou newspaper terminal can often lock more than 4 satellites. At this time, the Beidou newspaper terminal can be distributed in several groups according to the satellite constellation, each group of 4, and then select a group with the smallest error through the algorithm to select the minimum error. Positioning to improve accuracy.
Due to the errors of satellite running tracks and satellite clocks, the effects of atmosphere on the signal on the stream layer, the ionization layer on the signal, and the artificial SA protection policy (canceled on May 1, 2000), the positioning accuracy of the civil GPS is only 100 meters. In order to improve the accuracy of positioning, the differential GPS (DGPS) technology is generally used to establish a reference station (differential table) for GPS observation. The accurate coordinates of the known benchmark stations are used to compare the observation values to obtain a correction number, and to externalize release. After receiving the correction number, the Beidou newspaper machine was compared with its own observation value, and most of the errors were removed to get a more accurate position. Experiments show that the positioning accuracy can be increased to 5 meters.
Read recommendations:
YG119- Hunting Dog GPS tracker
The Development of China's GPS Navigation Market.gps tracker for trailer manufacturer
Last article:Introduction of the 4 major characteristics of GPS.realtime gps tracker online company
Next article:The manufacturer compares the difference between Beidou positioning and GPS positioning.plug & p
Related Information
GPS Tracker sales
2023-04-11Gps speed limiter wholesaler
2023-04-23fleet tracking mobile app
2023-03-16fleet gps tracking sales
2023-04-23mini gps tracker Production
2023-04-23obd2 tracker supplier
2023-03-16gps tracker for kids
2023-03-16Pet GPS Tracker Vendor
2023-03-16Pet GPS Tracker manufacture
2023-03-16real-time gps tracking wholesale
2023-04-23YG119- Hunting Dog GPS tracker
2023-10-07G07L 4G GPS Tracker
2022-09-06TK100 (GT06) Vehicle Tracker
2022-06-203 Years Disposable Asset GPS Tracker
2025-03-31TK08AL- RFID Car GPS Tracker
2023-10-07The application processor completes the GPS/Galileo function
2022-10-15Really breeding special GPS positioning anti -lost device.fleet management software webfleet solutio
2023-02-24About GPS Drift
2023-02-01GPS FFT algorithm
2022-11-10The manufacturer introduced in detail what applications of GPS in aviation flight navigation.gps tra
2023-04-25Precautions for Installation of Automobile GPS Positioner.portable gps tracker distributors
2023-09-11GPS tracking purchase method.4G GPS Tracker for vehicles Manufacturing
2023-08-17GPS tracking locator.plug & play Obd gps tracker manufacturer
2023-08-17GPS user equipment
2023-06-01What should I do if I encounter an offline alarm in the car GPS positioner?realtime tracking device
2023-03-24Application scenarios of GPS technology.4G GPS Tracker for vehicles Processing
2023-08-17GPS expansion function.gps tracker for Car wholesale
2023-06-21GPS area measuring instrument.car gps tracker distributors
2023-07-19When the car stops mobilizing, will the car GPS positioner consume power?
2023-02-14GPS navigator component-is a car navigation system
2023-05-16