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:
What is the difference between the Internet of Things card or mobile phone SIM card used?truck track
GPS cannot search for satellite signal problems.plug & play Obd gps tracker distributors
Last article:Intelligent GPS anti-theft electronic system
Next article:GPS performance indicators
Related Information
GPS Tracker wholesale
2023-04-114G GPS Tracker supplier
2023-04-23gps vehicle tracker distributors
2023-04-23GPS Tracker maker
2023-04-11gps tracker device
2023-04-11trailer gps tracker
2023-04-11GPS Tracking custom
2023-04-11GPS Tracker price
2023-04-11fleet gps tracking sales
2023-04-23gps tracker for trailer
2023-04-11TK103B
2022-06-20P60L Personal gps tracker
2022-06-21TK200AM-Disposable GPS Tracker
2022-06-21TK100N- Multi functional GPS Tracker
2023-10-06G900LM-4G Car Mini GPS Tracker
2025-03-25What is the Beidou GPS positioner?gps tracker no monthly fee distributors
2023-03-28How to determine whether the car is equipped with a GPS positioner?trailer gps tracker Manufacturing
2023-03-17Xiaobian Xiaobian tells you the role of the truck installation of the Beidou positioning system.plug
2023-04-25GPS application in ionosphere monitoring
2022-09-24International requirements aircraft must be equipped with GPS
2022-09-06What are the components of GPS
2022-09-23How to buy GPS.Magnetic gps tracker manufacturer
2023-05-24Handheld GPS Device
2022-08-18Introduce the different types of GPS positioner
2023-02-25GPS monitoring center alarm.pet gps tracker cat price
2023-08-09About GPS' Third Generation Chips'.gps tracker for bike Factory
2023-07-06Several Important Factors of Vehicle GPS Satellite navigation.personal gps tracker supplier
2023-06-16GPS uses traditional paper maps to find its location.realtime gps tracker online manufacturer.obd2 g
2023-04-13gps vehicle tracker.General Fault Handling and Maintenance Knowledge of Automobile GPS Positioning S
2023-11-08GPS management system-efficient management of your vehicle
2023-02-16