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:
Last article:Intelligent GPS anti-theft electronic system
Next article:GPS performance indicators
Related Information
Special Looks GPS Tracker PCBA
2023-03-16car gps tracker wholesale
2023-04-23Pet GPS Tracker manufacture
2023-03-16Portable car gps systems Manufacturing
2023-03-16Dog gps tracker Production
2023-04-23gps vehicle tracker Processing
2023-04-11obd2 gps tracker verizon wholesale
2023-03-16fleetmanagement webfleet solutions
2023-03-16fleet gps trackers Vendor
2023-04-23fleet gps trackers Processing
2023-04-23G09L -6 inch Tail light tracker
2022-06-20TK200AM-Disposable GPS Tracker
2022-06-21G02M Pet Tracker
2022-06-19P60L Personal gps tracker
2025-07-11GF30 Magnet GPS tracker with Voice listen
2022-06-21Handheld GPS Device
2022-08-18How much does it cost to install GPS positioning
2022-08-05GPS Tracker Features and Benefits
2022-07-09Development Trend of Automotive GPS Positioning System
2022-08-26How can the GPS positioner prevent electric vehicles from being stolen?plug & play Obd gps track
2023-03-17Compared with the difference between Beidou positioning and GPS positioning.cat gps tracker Manufact
2023-06-08Brief Introduction to GPS
2022-11-02GPS expansion function.gps tracker for Car wholesale
2023-06-21GPS precautions.portable gps tracker supplier
2023-06-28Is the global GPS positioning system really free?vehicle gps tracker webfleet solutions
2023-02-24Analysis of the Requirements and Functions for Installing GPS Positioners on Official Vehicles of Un
2023-09-22How to choose the GPS locator of a car loan?obd2 tracker Manufacturing
2023-03-15The development of GPS system
2022-10-12GPS reference station subsystem.Magnetic gps tracker supplier
2023-07-03GPS pseudo -distance measurement introduction.car gps tracker supplier
2023-04-19