source:truck tracking webfleet solutions release time:2022-11-19 Hits: Popular:realtime gps tracker online
????
????At present, the positioning accuracy provided by the GPS system is better than 10m. To obtain higher positioning accuracy, we usually use the differential GPS technology: place a GPS receiver on the base station for observation. According to the known precise coordinates of the reference station, the distance correction number from the reference station to the satellite is calculated, and the data is sent out by the reference station in real time. The user receiver also receives the correction number sent by the reference station while making GPS observation, and corrects the positioning result, so as to improve the positioning accuracy. Differential GPS can be divided into two categories: pseudo range difference and carrier phase difference.
????1. Pseudo range difference principle
????This is the most widely used difference. On the base station, observe all satellites, and calculate the true distance from each satellite to the base station at each time according to the known coordinates of the base station and the coordinates of each satellite. Compared with the measured pseudo range, the pseudo range correction number is obtained and transmitted to the user receiver to improve the positioning accuracy. This difference can obtain meter level positioning accuracy, such as the "beacon difference" widely used in coastal areas.
????2. Carrier phase difference principle
????Carrier phase difference technology, also known as RTK (Real Time Kinematic) technology, is a difference method for real-time processing of carrier phase observation of two stations. That is, the carrier phase collected by the reference station is sent to the user receiver to calculate the coordinates. The carrier phase difference can make the positioning accuracy reach centimeter level. It is widely used in the field where high precision position is required dynamically.
Read recommendations:
gps tracker with magnet wholesale
Last article锛?GPS development mode
Related Information
pet gps tracker cat supplier
2023-03-16gps tracker auto
2023-04-11Hidden GPS Trackers supplier
2023-04-23mini gps tracker wholesaler
2023-04-23Pet GPS Tracker Factory
2023-03-16gps vehicle tracker Manufacturing
2023-04-23gps vehicle tracker custom
2023-04-11Dog gps tracker sales
2023-04-234G GPS Tracker Solution
2023-04-23fleet gps trackers wholesale
2023-04-23G05N Vehicle Tracker
2022-06-21TK08AL- RFID Car GPS Tracker
2023-10-07TK100B- Accurate Pro version GT06/TK100
2023-10-06personal gps tracker Production
2022-09-06G500M-Mini GPS Tracker
2022-06-20Components of a GPS system
2022-08-20GPS automatic gain control system
2022-11-17GPS Knowledge Base: What is RTK Technology
2022-08-18Where is the GPS positioner generally installed.gps tracker with magnet distributors
2023-04-10GPS service platform
2022-10-09The editor of Beidou Tong introduced how to use the driving recorder.realtime gps tracker online who
2023-04-14How to purchase GPS.gps tracker with magnet distributors
2023-08-25The manufacturer introduced in detail what applications of GPS in aviation flight navigation.gps tra
2023-04-25Can the GPS positioning system help the breeding industry save costs?
2023-02-22How to use the car GPS positioner after installation?plug & play Obd gps tracker Processing
2023-03-28How to connect the mobile phone of the Beidou GPS positioner?gps tracker no monthly fee wholesaler
2023-04-15GPS software function
2022-10-10What are the precautions for using the Beidou car GPS?plug & play Obd gps tracker Production
2023-04-14Car GPS Navigation System Operation
2022-11-04Summarized the application of Beidou satellite.Car gps tracking distributors
2023-06-08