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:
fleet solution webfleet solutions
real-time gps tracking wholesale
Last article:Detailed Analysis of GSM Communication Service System
Next article:Application of GSM Network Communication in Vehicle Positioning System
Related Information
GPS Trackers sales
2023-04-11gps vehicle tracker wholesaler
2023-04-23real-time gps tracking sales
2023-04-23gps vehicle tracker custom
2023-04-11gps tracker für auto webfleet solutions
2023-04-11real-time gps tracking supplier
2023-04-23Cantrack TK100
2023-03-16Cantrack G05
2023-04-23pet gps tracker cat Manufacturing
2023-03-16realtime gps tracker online wholesale
2023-04-2310000mAh Magnetic Asset GPS Tracker
2025-04-083 Years Disposable Asset GPS Tracker
2025-03-31G06L- 4G Car GPS Tracker
2022-09-06G500M-Mini GPS Tracker
2022-06-20G900LM-4G Car GPS Tracker
2025-03-25What are the functions of breeding solar GPS positioning
2023-02-23Brief introduction of GPS control part
2022-09-22GPS navigator component-is a car navigation system
2023-05-16What do you think the gps tracker does?
2022-09-13GPS indoor positioning technology
2022-08-12The advantages and disadvantages of the flat antenna of the GPS vehicle positioning terminal
2023-04-06The concept and composition of the car positioning terminal.gps tracker no monthly fee wholesaler
2023-04-04What is the accuracy error range of vehicle gps locator?van tracker webfleet solutions
2023-03-23The role and functional characteristics of installing a GPS positioning system for taxis.gps vehicle
2023-10-07The application of the GPS positioning system in the breeding industry
2023-02-23Gps speed limiter.The significance of installing GPS system in vehicle safety management
2023-10-28GPS navigator software.Hidden GPS Trackers wholesaler
2023-06-10GPS installation step
2022-10-10GPS death phenomenon
2022-09-14Map navigation+fixed point warning+mobile speed measurement function.real-time gps tracking custom
2023-06-07