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:
G900LM-4G Car Mini GPS Tracker
Gps speed limiter.The significance of installing GPS positioning system in automobile delivery vehic
Last article:Intelligent GPS anti-theft electronic system
Next article:GPS performance indicators
Related Information
gps tracker for kids
2023-04-11real-time gps tracking
2023-03-16gps tracker for kids
2023-03-16Gps speed limiter price
2023-04-23fleet gps tracking manufacturer
2023-04-23car gps tracker distributors
2023-04-23gps vehicle tracker Factory
2023-04-11fleet gps trackers company
2023-04-23car gps tracker Processing
2023-04-23Dog gps tracker manufacturer
2023-04-23GF30 Magnet GPS tracker with Voice listen
2022-06-214G Wired GPS Tracker PCBA
2022-06-17C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)
2022-06-216000mAh Magnetic Asset GPS Tracker
2025-03-31G05N Vehicle Tracker
2022-06-21Choice becomes difficult? A variety of high-performance GPS are recommended
2022-08-10GPS Features
2022-11-19How to buy GPS.Magnetic gps tracker manufacturer
2023-05-24What daily life can GPS vehicle positioning terminals be applied?
2023-04-03Causes of GPS positioning errors
2022-07-12Centimeter -level high -precision 4G full Netcom GPS positioner.fleet management software webfleet s
2023-03-08The role of truck installation of Beidou positioning system.obd-II port gps tracker distributors
2023-04-10GPS network time server.Gps speed limiter manufacture
2023-05-27How to distinguish the GPS driving recorder and driving recorder?fleet tracking webfleet solutions
2023-03-21How to buy GPS.Magnetic gps tracker manufacturer
2023-05-24Beidou Satellite Positioner.hang tag button manufacture
2023-06-06The introduction of GPS in the field of logistics.gps tracker no monthly fee Production
2023-05-06GPS four arm spiral antenna
2022-11-23GPS system functions
2022-11-09What is a GPS positioning management system?
2023-11-01