Industry News

Home > NEWS > Industry News

Company News

Industry News

Causes of GPS positioning errors

source:Industry News release time:2022-07-12 Hits:     Popular:realtime gps tracker online

  

  When we use GPS for positioning, we will be affected by various factors. The factors that affect GPS positioning accuracy can be divided into the following four categories:

  (1) Factors related to GPS satellites

  SA Policy

  Starting from its national interests, the U.S. government artificially reduces the accuracy of ordinary users using GPS for navigation and positioning by reducing the accuracy of broadcast ephemeris (technology) and adding high-frequency jitter to the GPS reference signal (technology).

  satellite ephemeris error

  When GPS positioning is performed, the satellite orbit parameters required to calculate the GPS satellite position at a certain time are provided by various types of ephemeris [7], but no matter which type of ephemeris is used, the calculated satellite position will be The difference from its true position is called ephemeris error.

  Satellite clock difference

  The satellite clock error is the error between the clock face time of the atomic clock installed on the GPS satellite and the GPS standard time.

  Satellite Signal Transmitting Antenna Phase Center Deviation

  The satellite signal transmitting antenna phase center deviation is the difference between the nominal phase center of the signal transmitting antenna on the GPS satellite and its true phase center.

  (2) Factors related to transmission routes

  ionospheric delay

  Due to the refraction effect of the ionosphere around the earth on electromagnetic waves, the propagation speed of the GPS signal changes, which is called ionospheric delay. The influence of ionospheric refraction on electromagnetic waves is related to the frequency of electromagnetic waves and the total content of electrons in the propagation paths of electromagnetic waves.

  Tropospheric delay

  Due to the refraction effect of electromagnetic waves by the troposphere around the earth, the propagation speed of GPS signals changes, which is called tropospheric delay. The influence of tropospheric refraction on electromagnetic waves is related to the temperature, humidity and air pressure on the propagation path of electromagnetic waves.


Read recommendations:

obd2 tracker

Gps speed limiter Manufacturing

3 Years Disposable Asset GPS Tracker

Manufacturer introduces in detail the component of the car positioner.simple gps tracking wholesale

Causes of GPS Positioning Drift

Last article:Detailed Analysis of GSM Communication Service System

Next article:Application of GSM Network Communication in Vehicle Positioning System

Related Information

mini gps tracker

2023-04-11

GPS Rastreader

2023-03-16

gps tracker auto

2023-04-11

GPS Trackers Solution

2023-04-11

Dog gps tracker manufacturer

2023-04-23

real-time gps tracking

2023-04-11

Cantrack GT06

2023-04-11

car gps tracker wholesale

2023-04-23

pet gps tracker cat wholesale

2023-03-16

Pet GPS Tracker price

2023-04-11

G183 serials -JOBD GPS Tracker

2022-09-06

G03

2022-06-21

TK08A Motorcycle GPS Tracker

2022-06-20

TK100B- Accurate Pro version GT06/TK100

2023-10-06

VSL100 GPS Speed Limiter, Speed Governor

2022-06-19

GPS Mobile Positioning Technology

2022-11-24

GPS positioner function.realtime gps tracker online wholesale

2023-04-07

The navigation positioning method commonly used by self -moving robots.gps tracker for trailer manuf

2023-05-10

Compared with the difference between Beidou positioning and GPS positioning.cat gps tracker Manufact

2023-06-08

What are the basic features of GPS module at vehicle gauge level

2022-11-22

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

2023-10-13

Multiple factors affecting the popularity of mobile GPS.realtime gps tracker online Factory

2023-08-03

What is the effect of a manufacturer sharing the car positioner?plug & play Obd gps tracker whol

2023-04-14

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

2023-09-21

GPS emergency positioning and assistance products for the elderly.4G GPS Tracker for vehicles distri

2023-08-17

What daily life can GPS vehicle positioning terminals be applied?

2023-04-03

GPS vehicle tracking and dispatching function

2022-12-01

Application of GPS positioning in operational vehicles, logistics vehicles, official vehicles, and p

2023-10-10

Which is the best use of GPS positioning tracker for the loss of the elderly

2023-02-17

GPS guidance (Bearing)

2022-11-23