truck tracking webfleet solutions

Home > NEWS > Other information > truck tracking webfleet solutions

Company News

Industry News

4G GPS Tracker.How is your mobile GPS located

source:truck tracking webfleet solutions release time:2024-01-17 Hits:     Popular:realtime gps tracker online

  



  To understand the principle of positioning, first popularize what GPS is. GPS (Global Positioning System) is a new generation satellite navigation and positioning system developed by the United States in the 1970s and fully completed in 1994. It has the function of real-time three-dimensional navigation and positioning in all directions at sea, land, and air. The system consists of three parts: the space part (GPS satellite), the ground monitoring part, and the user part. There are a total of 24 satellites in the space section, of which 21 are working satellites and 3 are backup satellites, distributed in 6 orbits at an angle of 60 ° to each other. The distribution of satellites allows for the observation of more than 4 satellites anywhere and at any time in the world, and maintains a geometric shape with good positioning accuracy. This provides continuous global navigation capabilities over time.

  Our mobile end belongs to the user part of the GPS system, and its built-in GPS module only has the receiving function, not the transmitting function. GPS satellites are equipped with high-precision cesium atomic clocks to ensure the accuracy of time synchronization. The satellite continuously transmits carrier signals to the Earth, which modulate broadcast ephemeris and timestamps representing the satellite's position, as well as C/A and P codes used for ranging. The C/A code is coarse and is generally used for civilian use, while the P code is fine and not easily interfered with. It is used for military use.

  After the GPS module on the mobile phone receives the GPS signal, the time difference △ t can be obtained by comparing the timestamp in the navigation message with the current time in the device. The speed of electromagnetic waves v is the same as the speed of light propagation, and v multiplied by △ t to obtain the distance between the mobile phone and the GPS satellite (the receiver satellite clock has certain errors and atmospheric propagation errors, and the measured distance is also known as pseudorange), Each GPS terminal can simultaneously obtain navigation messages from at least 4 satellites. By using the method of spatial distance resection, we can calculate the three-dimensional position and other information of the mobile terminal, so that we can understand our current position on the mobile terminal.


Read recommendations:

gps vehicle tracker supplier

simple gps tracking Solution

G08L - 4inch Smart Tail Light Tracker

GPS user equipment

GPS positioning technology

Last article:4G GPS Tracker.There are four mainstream satellite systems worldwide

Next article:Gps speed limiter.The application advantages of GPS measurement technology

Related Information

real-time gps tracking wholesaler

2023-04-23

real-time gps tracking

2023-04-11

fleet tracking mobile app

2023-03-16

plug & play Obd gps tracker

2023-03-16

simple gps tracking Production

2023-04-23

Gps speed limiter equipment

2023-04-23

pet gps tracker cat Manufacturing

2023-03-16

Cantrack TK100

2023-04-23

gps tracker no monthly fee supplier

2023-03-16

Pet GPS Tracker supplier

2023-03-16

TK200AM-Disposable GPS Tracker

2022-06-21

TK103B

2022-06-20

G06L

2022-06-21

TK100 (GT06) Vehicle Tracker

2022-06-20

P02L Smart Walkie-Talkie Tracker

2025-09-19

Several ways of GPS mobile phone positioning

2022-10-21

GPS wireless communication transmission

2023-02-01

Global Navigation Satellite System

2022-11-04

The importance of the GPS positioning system in vehicle management.GPS Tracker for vehicles distribu

2023-04-04

GPS positioning accuracy

2022-08-20

The core of third-generation chips.vehicle gps tracker Solution

2023-07-06

Composition of GPS PXI acquisition equipment system

2022-11-11

GPS system architecture and analysis

2022-12-08

The application process of GPS positioner in car loans is as follows.vehicle gps tracker Manufacturi

2023-03-17

The concept of static drift of the car GPS positioner and cause.plug & play Obd gps tracker manu

2023-03-25

The difference between GPS positioning and mobile positioning.obd2 gps tracker verizon manufacture

2023-08-03

GPS monitoring system develops rapidly.Hidden GPS Trackers Manufacturing

2023-04-18

gps tracker purchase points?

2022-09-15

Compared to the advantages of GPS car navigation and mobile phone navigation.GPS Tracker for vehicle

2023-05-09

What to do if the vehicle GPS locator suddenly goes offline and the position does not update.mini gp

2023-09-21