source:truck tracking webfleet solutions release time:2023-04-18 Hits: Popular:realtime gps tracker online
1. Satellite trajectory
There are 24 GPS satellites orbiting the earth along six orbits (every four satellites in a group). Generally, no more than 12 satellites are on the same side of the earth. Most GPS receivers can track 8 to 12 satellites. At least 3 satellites are required to calculate LAT/LONG (2D) coordinates. Add another one to calculate 3D coordinates. For a given position, the GPS receiver knows which satellites are nearby at this time, because it continuously receives update signals from satellites.
2. Parallel channel
Some consumer GPS devices have 2-5 parallel channels to receive satellite signals. Because at most 12 satellites may be visible (the average is 8), this means that the GPS receiver must access each satellite in order to obtain information about each satellite.
Most GPS receivers on the market are 12 parallel channels, which allows them to continuously track the information of each satellite. The advantages of 12 channel receivers include fast cold start and initialization of satellite information, and they can have better reception effect in forest areas. Generally, a 12 channel receiver does not need an external antenna unless you are in a closed space, such as a cabin or carriage.
3. Positioning time
This refers to the time it takes for your GPS receiver to determine its current position when you restart it. For a 12 channel receiver, if you are near the last positioning position, the positioning time is generally 3-5 minutes in cold start and 15-30 seconds in hot start, while for a 2-channel receiver, the cold start time is more than 15 minutes, and the hot start time is 2-5 minutes.
4. Positioning accuracy
The horizontal positioning accuracy of most GPS receivers is about 5m~10m, but this is only when SA is not turned on.
Read recommendations:
C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)
GPS satellite signal view.GPS Tracker for vehicles manufacturer
In addition to seeing if the GPS is accurate, please also pay attention to the GPS radiation
Last article:How to connect the mobile phone of the Beidou GPS positioner?gps tracker no monthly fee wholesaler
Next article:New solutions of intelligent GPS anti-theft electronic system for automobiles.gps tracker for kids m
Related Information
car gps tracker Factory
2023-04-23realtime tracking device
2023-03-164G GPS Tracker for vehicles company
2023-04-23pet gps tracker cat custom
2023-04-23fleet gps tracking maker
2023-04-23cantrack asset
2023-04-23gps tracker online wholesale
2023-04-23Secumore
2023-03-16pet gps tracker cat wholesale
2023-03-16fleet gps trackers price
2023-04-23G09L -6 inch Tail light tracker
2022-06-20TK103B
2022-06-20P901 4G ID Card GPS Tracker Smart Walkie-talkie
2025-07-11C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)
2022-06-21G200(L) -Magnet GPS Tracker
2022-06-20Introduction to the principle of Beidou positioning by positioning manufacturers.gps tracker for tra
2023-06-20Introduce how to use the car navigation instrument.gps tracker with magnet distributors
2023-05-10GPS Control Center
2022-09-05GPS positioning anti-theft device G16A
2022-09-17Mobile GPS.plug & play Obd gps tracker wholesale
2023-05-20Cold start, warm start and hot start of gps
2023-02-01Introduction to GPS Positioning Principles.car gps tracker manufacture
2023-04-19How to do car GPS positioning in a car rental company.obd2 gps tracker verizon distributors
2023-03-16How should a car loan company choose a reasonable car GPS locator?obd2 gps tracker verizon
2023-03-24Scope of GPS.plug & play Obd gps tracker Vendor
2023-09-09Beidou 4G wiring GPS positioner installation precautions.realtime gps tracker online Processing
2023-03-28What is GPS location time?
2022-10-26Schematic diagram of GPS satellite navigation system
2022-12-29Real time monitoring of police cars by GPS positioning
2022-12-17GPS pseudo -distance measurement introduction.gps tracker for trailer distributors
2023-04-20