source:Industry News release time:2023-06-20 Hits: Popular:realtime gps tracker online
24 GPS satellites orbit the Earth at an altitude of 22000 kilometers above the ground in a 12 hour cycle, allowing for simultaneous observation of more than 4 satellites at any point on the ground at any time. Due to the precise location of satellites, in GPS observation, we can obtain the distance from the satellite to the Beidou position reporting machine. Using the distance formula in three-dimensional coordinates and using three satellites, we can form three equations to solve the positions of observation points (X, Y, Z). Considering the error between the satellite clock and the receiver clock, there are actually four unknowns, X, Y, Z, and clock difference. Therefore, a fourth satellite needs to be introduced to form four equations for solving, in order to obtain the longitude, latitude, and elevation of the observation point.
In fact, the Beidou position reporting terminal can often lock in more than 4 satellites. At this time, the Beidou position reporting terminal can be divided into several groups according to the constellation distribution of the satellites, with 4 satellites in each group. Then, the algorithm selects the group with the smallest error for positioning, thereby improving accuracy.
Due to the errors in satellite operation orbit and satellite clock, the influence of atmospheric troposphere and ionosphere on signals, and the artificial SA protection policy (cancelled on May 1, 2000), the positioning accuracy of civil GPS is only 100 meters. To improve positioning accuracy, differential GPS (DGPS) technology is commonly used to establish a reference station (differential station) for GPS observation. The known accurate coordinates of the reference station are compared with the observed values to obtain a correction number, which is then published to the public. After receiving the correction, the Beidou position reporting machine compares it with its own observation values, eliminates most of the errors, and obtains a more accurate position. Experiments have shown that using differential GPS can improve positioning accuracy to 5 meters
Read recommendations:
G01 Smallest Personal Old People Mini GPS Tracker for Kids
GPS module.gps vehicle tracker Solution
With GPS positioning function, police smart clothing becomes a good helper for Expo security
Last article:What are the functions of car GPS locators.obd-II port gps tracker maker
Next article:Introduction to GPS Positioner.gps tracker device Production
Related Information
real-time gps tracking
2023-04-114G GPS Tracker for vehicles Production
2023-04-23gps tracker online wholesaler
2023-04-23Dog gps tracker Vendor
2023-03-16simple gps tracking manufacturer
2023-04-23Cantrack GPS Tracker
2023-03-16gps tracker app
2023-04-11gps vehicle tracker distributors
2023-04-11GPS Tracker for vehicles Vendor
2023-03-16personal gps tracker
2023-04-11G200NY -Cow/Camel GPS Tracker
2022-06-21Mini Sized GPS Tracker PCBA
2022-06-17G01 Smallest Personal Old People Mini GPS Tracker for Kids
2022-06-19G900LS-4G Car GPS Tracker
2023-10-064G Wired GPS Tracker PCBA
2022-06-17What are the types of driving recorders?GPS Tracker for vehicles Manufacturing
2023-04-14The role of UAV GPS module
2022-10-13What information can the vehicle GPS positioning system query?GPS Tracker for vehicles distributors
2023-04-07What are the precautions for using the Beidou car GPS?plug & play Obd gps tracker Production
2023-04-14How will a drone without a GPS tracker orient and return to its base?
2022-09-13mini gps tracker.What is the principle of GPS
2023-11-16How to distinguish the GPS driving recorder and driving recorder?fleet tracking webfleet solutions
2023-03-21Mobile GPS positioning
2023-07-13The complete installation step of the wiring car GPS positioner
2023-03-28The editor of Beidou Tong introduced how to use the driving recorder.realtime gps tracker online who
2023-04-14Gps speed limiter.Why do operating vehicles need to install a Beidou satellite positioning and drivi
2023-10-26GPS locator installation
2022-10-27Issues that need attention during the purchase of GPS vehicle terminals.plug & play Obd gps trac
2023-03-28Where is the GPS positioner generally installed.gps tracker with magnet distributors
2023-04-10mini gps tracker.GPS operation vehicle management platform service provider positioning platform req
2023-11-07