truck tracking webfleet solutions

Home > NEWS > Other information > truck tracking webfleet solutions

Company News

Industry News

GPS positioning technology

source:truck tracking webfleet solutions release time:2022-08-12 Hits:     Popular:realtime gps tracker online

  

  According to the geometric positioning principle of measuring navigation parameters, satellite navigation can be divided into angle measurement, time ranging, Doppler velocity measurement and combination method. Among them, the angle measurement method and combination method have no practical application due to low accuracy.

  ①Doppler speed measurement positioning: "Meridian" satellite navigation system adopts this method. The user positioning device measures the Doppler frequency shift curve according to the Doppler frequency shift between the frequency of the signal received from the navigation satellite and the frequency of the signal sent from the satellite, and the user's position can be calculated according to this curve and the satellite orbit parameters.

  ② Time ranging navigation and positioning: "Navigation Star" global positioning system adopts this system. The user receiving equipment accurately measures the propagation time of the signals sent by the four satellites in the system that are not in the same plane (to ensure unique results, the four satellites cannot be in the same plane), and then completes a set of model mathematical operations including four equations, The three-dimensional coordinates of the user's position and the error between the user's clock and the system time can be calculated.

  The difference between the user's own geographic location coordinates measured by the navigation satellite and its real geographic location coordinates is called the positioning error, which is the most important performance index of the satellite navigation system. The positioning accuracy mainly depends on the orbit prediction accuracy, the navigation parameter measurement accuracy and its geometric amplification factor and the user dynamic characteristic measurement accuracy. The accuracy of orbit prediction is mainly affected by the Earth's gravitational field model and other orbital perturbations; the measurement accuracy of navigation parameters is mainly affected by the performance of satellites and user equipment, signal refraction in the ionosphere, troposphere and multipath and other error factors. Its geometric amplification factor is given by It is determined by the geometric relationship between the satellite and the user's position during positioning; the user's dynamic characteristic measurement accuracy refers to the user's heading, speed and antenna height measurement accuracy during positioning


Read recommendations:

car gps tracker Production

gps vehicle tracker price

G900LS-4G Car GPS Tracker

GPS network security ideas

GPS entry terminology and common sense

Last article:GPS indoor positioning technology

Next article:GPS Global Positioning System

Related Information

fleet gps trackers custom

2023-04-23

Cantrack TK100

2023-04-23

Dog gps tracker

2023-04-11

pet gps tracker cat

2023-03-16

4G GPS Tracker Solution

2023-04-23

Car gps tracking Manufacturing

2023-04-23

fleet gps trackers

2023-04-11

gps vehicle tracker Solution

2023-04-11

Car gps tracking price

2023-04-11

real-time gps tracking Factory

2023-04-23

G900LS 8 Lines-4G Car GPS Tracker

2025-03-31

6000mAh Magnetic Asset GPS Tracker

2025-03-31

P60L Personal gps tracker

2022-06-21

G05N Vehicle Tracker

2022-06-21

TK100N- Multi functional GPS Tracker

2023-10-06

GPS entry terminology and common sense

2022-08-10

GPS receiver

2023-02-07

A-GPS and GPRS

2022-12-08

GPS Navigation

2022-08-12

How to use the car GPS positioner after installation?plug & play Obd gps tracker Processing

2023-03-28

Advantages and characteristics of third-generation chips.gps tracker auto manufacture

2023-07-06

Why does China's Beidou satellite still use GPS positioning system.gps tracker for trailer Factory

2023-09-12

GPS positioning logistics solutions Logistics GPS positioning application solutions

2022-10-09

Application of GPS Locator in Logistics Management

2022-12-08

Solar GPS positioning tracker solve worries

2023-02-23

Why do the antennas need to be facing up when installing a GPS tracker?

2022-09-08

When the car stops mobilizing, will the car GPS positioner consume power?

2023-02-14

GPS lofting.OBD GPS Tracker Manufacturing

2023-07-03

The principle of GPS indoor positioning technology

2022-08-12

What will happen if the card of the car GPS positioner is unplugged?realtime gps tracker online manu

2023-03-28