source:truck tracking webfleet solutions release time:2022-10-10 Hits: Popular:realtime gps tracker online
(1) SA
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 (ε technology) and adding high-frequency jitter to GPS signals (currently canceled).
(2) Satellite ephemeris error
When performing GPS positioning, the satellite orbit parameters required to calculate the GPS satellite position at a certain time are provided by various types of ephemeris, but no matter which type of ephemeris is used, the calculated satellite positions will be the same as their real positions. There is a difference, which is called the ephemeris error.
(3) 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.
(4) Phase center deviation of satellite signal transmitting antenna
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 the propagation path
(1) 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.
(2) Tropospheric delay
For the refraction effect of the troposphere around the earth on electromagnetic waves, the propagation speed of the GPS signal changes, which is called tropospheric delay.
(3) Multipath effect
Due to the influence of the surrounding environment of the receiver, the satellite signal received by the receiver also includes the influence of reflected and refracted signals, which is the so-called multipath effect.
3. Receiver-related factors
(1) Receive set clock difference
The receiver clock error is the difference between the clock face time of the clock used by the GPS receiver and the GPS standard time.
(2) Receiver antenna phase center deviation
The receiver antenna phase center deviation is the difference between the nominal phase center of the GPS receiver antenna and its true phase center.
(3) Errors caused by receiver software and hardware
When GPS positioning is performed, the positioning results are also affected by processing and control software and hardware.
(4) The phase increase effect caused by the relative rotation of the antenna
Read recommendations:
Last article:GPS installation step
Next article:The main uses of GPS
Related Information
GPS Tracker wholesaler
2023-04-11car gps tracker Solution
2023-04-23apple airtags
2023-03-16trailer gps tracker
2023-03-16obd2 tracker wholesale
2023-03-16personal gps tracker distributors
2023-04-11Dog gps tracker Manufacturing
2023-04-23Dog gps tracker supplier
2023-04-234G GPS Tracker Processing
2023-04-23portable gps tracker wholesaler
2023-03-16G06L- 4G Car GPS Tracker
2022-09-06G900LM-4G Car GPS Tracker
2025-03-25G200NY -Cow/Camel GPS Tracker
2022-06-216000mAh Magnetic Asset GPS Tracker
2025-03-31TK08A Motorcycle GPS Tracker
2022-06-20Why is the gps locator showing offline?
2022-07-19Exploring China's Beidou Satellite Navigation and Positioning System
2022-08-23GPS basic functions
2022-08-10Introduction to GPS Navigation System
2022-11-07Types of GPS
2022-07-26How to select a suitable vehicle GPS locator
2023-02-21Gps speed limiter.The significance of installing GPS positioning system in automobile delivery vehic
2023-11-11Brief introduction to GPS principle
2022-12-13Manufacturer introduces in detail the component of the car positioner.simple gps tracking wholesale
2023-06-08Differences between GPS monitoring platform BS and CS
2022-12-14Features of GPS navigation map
2022-12-14GPS satellite positioning is an inevitable trend
2023-02-23Gps speed limiter.The significance of installing GPS system in vehicle safety management
2023-10-28This product focuses on humanized design to minimize the false alarm rate.
2022-12-15Gps speed limiter.What are the functions implemented after the installation of the car GPS on-board
2023-10-13