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:

gps vehicle tracker wholesale

real-time gps tracking

Mini Sized GPS Tracker PCBA

Calibration method for Beidou/GPS fuel sensor of large trucks.gps vehicle tracker

Bring a GPS tracker and never be afraid of losing it again!

Last article:GPS indoor positioning technology

Next article:GPS Global Positioning System

Related Information

car gps tracker

2023-04-11

Cantrack GT06

2023-04-23

4G obd gps trackewr

2023-03-16

Gps speed limiter Solution

2023-04-23

gps vehicle tracker

2023-04-11

GPS Trackers sales

2023-04-11

obd-II port gps tracker

2023-04-11

Gps speed limiter distributors

2023-04-23

gps tracker for bike

2023-03-16

4G GPS Tracker for vehicles price

2023-04-23

G500L -4G OBD GPS Tracker

2022-09-06

personal gps tracker Production

2022-09-06

3 Years Disposable Asset GPS Tracker

2025-03-31

TK100 (GT06) Vehicle Tracker

2022-06-20

P60L Personal gps tracker

2022-06-21

The conversion method of GPS coordinates in unit degrees and seconds

2022-10-12

GPS receiver classification.realtime gps tracker online distributors

2023-04-23

Features of GPS navigation map

2022-12-14

GPS and National Security

2022-09-26

The Development of GPS in the New Century

2022-09-24

The traditional architecture of GPS

2022-11-01

GPS User Data Center Subsystem.gps tracker for Car Solution

2023-07-03

Recommended Minimum Specific GPS/TRANSIT Data (RMC) GPS recommended positioning information

2022-09-28

Differences between GPS cold start and hot start

2022-12-01

Gps speed limiter.What are the functions implemented after the installation of the car GPS on-board

2023-10-13

Introduction to GPS Positioning Principles.gps tracker no monthly fee Processing

2023-04-20

GPS monitoring information platform ensures smooth traffic

2022-12-17

Accuracy of GPS

2022-12-28

mini gps tracker.Installation and usage methods for automotive GPS locators

2023-11-08

Differences between GPS monitoring platform BS and CS

2022-12-14