source:truck tracking webfleet solutions release time:2022-12-05 Hits: Popular:realtime gps tracker online

GPS is now generally 12 channels, which can receive 12 satellites at the same time. Early models, such as GARMIN 45C, were 8-channel. The GPS receiver can output 2D (that is, 2D) data when it receives signals from three satellites. It has only longitude and latitude, but no altitude. If it receives more than four satellites, it will output 3D data, which can provide altitude. However, due to the problem of the earth itself, it is not a standard circle, so there are some errors in the height data. Now some GPS receivers have built-in barometers, such as the SUMMIT and VISTA of etrex. These machines synthesize the final altitude based on the altitude data obtained from the two channels, which should be more accurate.
When the GPS receiver is powered on for the first time, or the distance between the power on and the last power off location is more than 800KM, because the ephemeris stored in the receiver are not correct, it is necessary to relocate on the receiver.
The GPS receiver should be used in the open and visible sky, so it cannot be used indoors. The accuracy of the hand-held GPS is generally about 10 meters, which means that you can see whether to go left or right on a road. The accuracy mainly depends on the signal reception of satellites and the distribution of satellites that can receive signals in the sky. If several satellites are distributed dispersedly, the positioning accuracy provided by the GPS receiver will be relatively high.
Read recommendations:
GF70L-Solar Magnetic Asset GPS Tracker
What are the basic functions of vehicle gps locator?plug & play Obd gps tracker
What is the effect of a manufacturer sharing the car positioner?plug & play Obd gps tracker whol
Next article:GPS system composition
Related Information
4G GPS Tracker Production
2023-04-23gps vehicle tracker company
2023-04-234G GPS Tracker for vehicles maker
2023-04-23GPS Tracker wholesale
2023-04-11pet gps tracker cat wholesale
2023-03-16realtime tracking device
2023-03-16simple gps tracking company
2023-04-234G GPS Tracker wholesaler
2023-04-23mini gps tracker sales
2023-04-11gps vehicle tracker Factory
2023-04-23TK08AL- RFID Car GPS Tracker
2023-10-07G500L -4G OBD GPS Tracker
2022-09-06G200(L) -Magnet GPS Tracker
2022-06-20VSL100 GPS Speed Limiter, Speed Governor
2022-06-19G200NY -Cow/Camel GPS Tracker
2022-06-21GPS positioner positioning is inaccurate.gps tracker no monthly fee distributors
2023-04-25GPS Application Solution
2022-10-09Application in GPS tourism.plug & play Obd gps tracker Processing
2023-05-06Design of GPS Vehicle Satellite Positioning Simulation System
2022-08-24What are GPS in aviation flight navigation.gps tracker for trailer distributors
2023-04-10The main error and elimination algorithm in GPS positioning
2023-02-10Beidou Satellite GPS Trajectory.gps tracker no monthly fee distributors
2023-08-18How to choose the installation location of the wireless GPS positioner?4G GPS Tracker for vehicles
2023-03-22Introduction to GPS system functions
2022-11-11The difference between gps and cellular version
2022-11-03Positioning Technology Based on GPS Mobile Network
2022-10-10Composition of GPS clock system.portable gps tracker company
2023-07-07Precautions before installing GPS intelligent positioning terminal.car gps tracker manufacturer
2023-09-15GPS monitoring system system function and characteristics
2023-02-11The Application of GPS in Military Affairs.gps tracker with magnet distributors
2023-09-09