source:truck tracking webfleet solutions release time:2022-08-26 Hits: Popular:realtime gps tracker online

1. DGPS function
To minimize the effects of SA and atmospheric refraction, there is a device called a DGPS transmitter. It is a fixed GPS receiver (set within a radius of 100km to 200km of a survey site) to receive the signal from the satellite, it knows exactly what the precise time the satellite signal is theoretically transmitted to, and then correlates it with the actual transmission time. Compare, then calculate the "difference", which is very close to the effect of SA and atmospheric refraction, and send this difference so that other GPS receivers can use it to get a more accurate position reading (5m to 10m or less error).
Many GPS equipment providers set up DGPS transmitters in some areas for their customers to use free of charge, as long as the GPS receivers purchased by customers have DGPS capabilities.
2. Signal interference
To give you a good fix, a GPS receiver needs at least 3-5 satellites to be visible. If you're in a canyon or on a street lined with tall buildings, or in a dense jungle, you may not be able to communicate with enough satellites to be able to locate or get only two-dimensional coordinates. Also, if you're inside a building, you may not be able to update your location, some GPS receivers have separate antennas that can be attached to the windshield, or an external antenna that can be placed on the roof, which helps you receivers get more satellite signals.
3. Physical indicators
When purchasing GPS equipment, physical indicators such as size, weight, display screen, waterproof, shockproof, dustproof performance, high temperature resistance, and power consumption must be considered.
Read recommendations:
Is the global GPS positioning system really free?vehicle gps tracker webfleet solutions
Last article:Intelligent GPS anti-theft electronic system
Next article:GPS performance indicators
Related Information
gps vehicle tracker
2023-04-11fleet tracking webfleet solutions
2023-03-16GPS Tracker for vehicles Manufacturing
2023-03-16gps tracker app
2023-04-11Dog gps tracker Processing
2023-04-23Vehicle tracking device
2023-03-16simple gps tracking
2023-04-114G GPS Tracker Vendor
2023-04-23GPS Tracker Vendor
2023-04-11gps tracker for kids Vendor
2023-04-23GF70L-Solar Magnetic Asset GPS Tracker
2023-10-07NB20 -4G Bluetooth Smart Pet Tracker
2022-06-21TK200AM-Disposable GPS Tracker
2022-06-21TK100N- Multi functional GPS Tracker
2023-10-06G183 serials -JOBD GPS Tracker
2022-09-06The reason why it is an important navigation that it is inseparable.realtime gps tracker online Prod
2023-04-25Brief Introduction of Vehicle GPS Satellite Positioning Management System
2022-07-09Application of GPS Earth Powerology.realtime gps tracker online Manufacturing
2023-04-23How GPS Works
2022-10-22What is GPS?
2022-12-14Multiple factors affecting the popularity of mobile GPS.realtime gps tracker online Factory
2023-08-03Car GPS Navigation System
2022-11-04gps vehicle tracker.Provide a complete set of solutions for the application field of GPS positioning
2023-11-06About GPS electronic dogs.realtime gps tracker online custom
2023-05-19How to reduce the risk of car loan in car positioning terminals
2023-02-16GPS indoor positioning technology
2022-08-12GPS screen reaction problem.plug & play Obd gps tracker Manufacturing
2023-04-12gps tracker purchase points?
2022-09-15GPS electronic dog.gps tracker online Processing
2023-06-09The obvious advantages and characteristics of GPS products
2023-02-01