truck tracking webfleet solutions

Home > NEWS > Other information > truck tracking webfleet solutions

Company News

Industry News

GPS Principles.Pet GPS Tracker manufacturer

source:truck tracking webfleet solutions release time:2023-07-14 Hits:     Popular:realtime gps tracker online

  

  24 GPS satellites orbit the Earth at an altitude of 12000 kilometers above the ground in a 12 hour cycle, allowing for simultaneous observation of more than 4 satellites at any point on the ground at any time.

  Due to the precise positioning of satellites, in GPS observations, we can obtain the distance from the satellite to the receiver. Using the distance formula in three-dimensional coordinates and using three satellites, we can form three equations to solve the positions of observation points (X, Y, Z). Considering the error between the satellite clock and the receiver clock, there are actually four unknowns, X, Y, Z, and clock difference. Therefore, a fourth satellite needs to be introduced to form four equations for solving, in order to obtain the longitude, latitude, and elevation of the observation point.

  In fact, receivers can often lock in more than 4 satellites. In this case, the receiver can be divided into several groups based on the constellation distribution of the satellites, with 4 satellites in each group. Then, the algorithm selects the group with the smallest error for positioning, thereby improving accuracy.

  Due to the errors in satellite orbit and satellite clock, the influence of atmospheric troposphere and ionosphere on signals, and the artificial SA protection policy, the positioning accuracy of civil GPS is only 100 meters. In order to improve positioning accuracy, differential GPS (DGPS) technology is commonly used to establish a reference station (differential station) for GPS observation. The known precise coordinates of the reference station are compared with the observed values to obtain a correction number, which is then released to the public. After receiving the correction number, the receiver compares it with its own observation values to eliminate most of the errors and obtain a more accurate position. Experiments have shown that using differential GPS, the positioning accuracy can be improved to 5 meters.


Read recommendations:

gps tracker for kids

real-time gps tracking maker

TK200AM-Disposable GPS Tracker

Why does the GPS positioning accuracy require high requirements

Are the mortgage loan cars installed in the car GPS terminal?mileage tracking webfleet solutions

Last article:Principles of GPS system positioning.Magnetic gps tracker company.gps tracker for Car supplier

Next article:GPS mobile engineering mode.gps tracker device wholesale

Related Information

gps vehicle tracker Production

2023-04-23

GPS Tracker for vehicles Vendor

2023-03-16

gps tracker online

2023-04-11

real-time gps tracking Processing

2023-04-23

mini gps tracker sales

2023-03-16

van tracker webfleet solutions

2023-03-16

4G GPS Tracker for vehicles Processing

2023-04-23

4G GPS Tracker

2023-04-11

fleetmanagement webfleet solutions

2023-03-16

mini gps tracker sales

2023-04-11

TK100 (GT06) Vehicle Tracker

2022-06-20

3000mAh Magnet Asset GPS Tracker

2025-03-31

G200(L) -Magnet GPS Tracker

2022-06-20

G06L- 4G Car GPS Tracker

2022-09-06

3 Years Disposable Asset GPS Tracker

2024-10-17

GPS smart bus stop sign

2022-09-05

GPS automatic navigation.obd2 gps tracker verizon distributors

2023-05-17

How to use gps tracker?

2022-09-19

Do you know the working principle of the pet GPS positioner?realtime gps tracker online wholesaler

2023-03-10

Factors related to GPS satellites

2022-09-22

Types of GPS chips used by common GPS receivers

2022-12-30

The development history of GPS

2022-08-12

Guidelines for purchasing mortgaged cars - Use of GPS anti-theft devices.personal gps tracker wholes

2023-09-12

Introduction to GPS Prospects

2022-09-23

How does GPS develop

2022-12-13

What are the built -in cards usually use in the car GPS positioner?gps tracker no monthly fee Manufa

2023-03-28

Introduction to GPS positioning tracker

2022-12-15

Introduction to GPS Navigation System

2022-11-07

GPS positioning principle

2022-11-26

Gps speed limiter.The positioning principle of automotive GPS global satellite positioning system

2023-11-17