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:
4G GPS Tracker for vehicles company
How to implement GPS monitoring function.trailer gps tracker Solution
Last article:Intelligent GPS anti-theft electronic system
Next article:GPS performance indicators
Related Information
car gps tracker Vendor
2023-04-23GPS Tracker wholesaler
2023-03-16GPS Tracker price
2023-04-11fleet gps tracking custom
2023-04-23obd2 gps tracker verizon
2023-04-11fleet gps tracking Production
2023-04-23simple gps tracking manufacturer
2023-04-23Hidden GPS Trackers
2023-04-11Dog gps tracker sales
2023-04-23fleet gps tracking wholesale
2023-04-23G500M-Mini GPS Tracker
2022-06-20G06L- 4G Car GPS Tracker
2022-09-064G Wired GPS Tracker PCBA
2022-06-17VSL100 GPS Speed Limiter, Speed Governor
2022-06-19G02M Pet Tracker
2022-06-19Principle of GPS system
2022-12-09GPS four arm spiral antenna
2022-11-23Compared with the difference between Beidou positioning and GPS positioning.gps tracker for trailer
2023-06-17The concept and composition of the car positioning terminal.gps tracker no monthly fee wholesaler
2023-04-04Where is the product advantage of the GPS positioner
2023-03-06Troubleshooting the cause of vehicle GPS locator offline and intermittent data.4G GPS Tracker
2023-09-21What are the functions of the driving recorder?obd-II port gps tracker Manufacturing
2023-04-14What to do if the vehicle GPS locator suddenly goes offline and the position does not update.mini gp
2023-09-21GPS measurement system
2022-11-08Introduction to GPS World
2022-10-25Do you know the working principle of the pet GPS positioner?realtime gps tracker online wholesaler
2023-03-10GPRS/CDMA GPS antenna.gps tracker online Manufacturing
2023-08-02Multiple factors affecting the popularity of mobile GPS.realtime gps tracker online Factory
2023-08-03Bracelet GPS positioner and anti -lost device!car gps tracker maker
2023-02-18Where are car mounted GPS locators usually installed.mini gps tracker distributors
2023-06-25