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:
NB20 -4G Bluetooth Smart Pet Tracker
The application and implementation of CAAC BeiDou is divided into three stages.car gps tracker Manuf
Centimeter -level high -precision 4G full Netcom GPS positioner.fleet management software webfleet s
Last article:Intelligent GPS anti-theft electronic system
Next article:GPS performance indicators
Related Information
Dog gps tracker manufacturer
2023-04-23cantrack g05
2023-04-11fleet gps trackers Vendor
2023-04-23realtime gps tracker online Factory
2023-04-23Secumore
2023-03-16best gps tracker
2023-04-11realtime gps tracker online wholesale
2023-04-23Asset GPS Tracker
2023-03-16fleet gps trackers wholesale
2023-04-23vehicle gps tracker wholesale
2023-04-23G900LM-4G Car Mini GPS Tracker
2025-03-25G200NY -Cow/Camel GPS Tracker
2022-06-213 Years Disposable Asset GPS Tracker
2025-03-31TK200AM-Disposable GPS Tracker
2022-06-21P60L Personal gps tracker
2022-06-21How to use gps tracker?
2022-09-19Customer Visiting
2020-09-30Prison GPS Personnel Management Program
2022-08-23GPS system architecture and analysis
2022-09-01GPS Personal Location
2022-11-01What are the components of GPS
2022-12-13Application place for GPS technology
2022-10-10What are GPS in aviation flight navigation.gps tracker for trailer distributors
2023-04-10GPS's military development introduction.obd2 gps tracker verizon Manufacturing
2023-05-06gps vehicle tracker.The role of installing car GPS and Beidou satellite positioning in the road tran
2023-10-26GPS electronic dog.gps tracker online Processing
2023-06-09The basic architecture and characteristics of GPS
2022-10-15Real time monitoring of police cars by GPS positioning
2022-12-17Gps speed limiter.What should be paid attention to when installing GPS locators on rental company ve
2023-10-20mini gps tracker.Introduction to the main functions of enterprise users choosing car GPS satellite p
2023-11-11