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:
P901 4G ID Card GPS Tracker Smart Walkie-talkie
The role of truck installation of Beidou positioning system.obd-II port gps tracker distributors
Next article:GPS system composition
Related Information
fleet gps trackers
2023-03-16mini gps tracker manufacturer
2023-04-23fleet gps tracking Solution
2023-04-23Pet GPS Tracker Manufacturing
2023-03-16simple gps tracking wholesale
2023-04-23realtime gps tracker online
2023-04-11mini gps tracker Processing
2023-04-23gps vehicle tracker maker
2023-04-23GPS Tracker Solution
2023-04-114G LTE gps tracker
2023-04-11G07L 4G GPS Tracker
2022-09-06G01 Smallest Personal Old People Mini GPS Tracker for Kids
2022-06-19G900LS J16-4G Car GPS Tracker
2023-10-06G05N Vehicle Tracker
2022-06-21G900LM J16-4G Car GPS Tracker
2025-03-25What are the main characteristics of GPS technology?
2022-11-03Why is the GPS tracker inaccurate?
2022-09-16GPS navigation signal
2022-11-08how to install gps locator
2022-07-09GPS Function Introduction
2022-10-27GPS forward direction (heading).gps tracker for bike wholesale
2023-06-10Summarized the application of Beidou satellite.Car gps tracking distributors
2023-06-08GPS navigator component-global positioning system
2023-05-16GPS positioning anti lost device comparison.gps tracker auto webfleet solutions
2023-02-24What does the 16 channel GPS module mean?vehicle gps tracker wholesaler
2023-07-11The main error and elimination algorithm in GPS positioning
2023-02-10Everyone knows about gps trackers, but what is LBS?
2022-09-15Where is the GPS positioner generally installed.gps tracker with magnet distributors
2023-04-10How receivers and drones leave GPS
2022-09-13Vehicle GPS navigator development.gps tracker with magnet Production
2023-05-18