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:
GF30 Magnet GPS tracker with Voice listen
The manufacturer shared the function of GPS navigation with everyone.gps tracker with magnet price
Last article:GPS development mode
Related Information
pet gps tracker cat custom
2023-04-23Gps speed limiter Manufacturing
2023-04-23fleet gps trackers wholesale
2023-04-23simple gps tracking Production
2023-04-23fleet gps trackers Production
2023-04-23car gps tracker price
2023-04-114G GPS Tracker for vehicles
2023-03-16gps vehicle tracker sales
2023-04-23gps tracker for trailer
2023-04-23plug & play Obd gps tracker
2023-03-16G900LS-4G Car GPS Tracker
2023-10-06Mini Sized GPS Tracker PCBA
2022-06-17G500L -4G OBD GPS Tracker
2022-09-06TK200AM-Disposable GPS Tracker
2022-06-21TK08A Motorcycle GPS Tracker
2022-06-20What are the differences between car navigation and mobile phone navigation?gps tracker with magnet
2023-04-11Introduction of the 4 major characteristics of GPS.realtime gps tracker online company
2023-05-11What are GPS satellite tracks?
2022-10-26Car GPS function.GPS Tracker for vehicles distributors
2023-05-13Brief analysis of the benefits of installing vehicle positioning system.van tracker webfleet solutio
2023-03-13Introduce how to use wireless GPS locators
2023-06-27The choice of GPS hardware architecture
2022-09-01Preparation before using GPS
2022-12-28Working principle of locator.vehicle gps tracker supplier
2023-07-19Examples of GPS technology in the application of navigators
2023-05-16GPS positioning based on base stations.vehicle gps tracker company
2023-07-14Fire truck installed with GPS global positioning navigation system
2023-02-06The following aspects mainly affect the performance of GPS antenna
2022-11-12GPS receiving antenna
2022-09-27The advantages of "Galileo" GPS positioning system
2023-02-11