source:truck tracking webfleet solutions release time:2023-07-13 Hits: Popular:realtime gps tracker online
The basic principle of GPS positioning is to use the instantaneous position of high-speed moving satellites as known starting data, and use the method of spatial distance resection to determine the position of the test point.
Assuming that a GPS receiver is placed at the ground test point at time t, the time △ t of the GPS signal reaching the receiver can be determined. In addition, the satellite ephemeris and other data received by the receiver can determine the following four equations:
The meanings of each parameter in the four equations are as follows:
x. Y and z are the spatial Cartesian coordinates of the coordinates of the point to be measured.
Vto is the clock deviation of the receiver.
C is the propagation speed of GPS signals, that is, the speed of light.
Di (i=1, 2, 3, 4) is the distance between satellite 1, satellite 2, satellite 3, and satellite 4 to the receiver.
△ ti (i=1, 2, 3, 4) is the time it takes for signals from satellites 1, 2, 3, and 4 to reach the receiver.
Di=c △ ti (i=1, 2, 3, 4)
Xi, yi, zi (i=1, 2, 3, 4) are the spatial Cartesian coordinates of satellite 1, satellite 2, satellite 3, and satellite 4 at time t, obtained from satellite navigation messages.
Vti (i=1, 2, 3, 4) is the clock deviation of satellite clocks for satellites 1, 2, 3, and 4, provided by the satellite ephemeris.
Read recommendations:
Talk about the advantage of the use of pet smart positioner.realtime gps tracker online manufacture
Anti-kidnapping smart bracelet comes out with built-in GPS system
Last article:Mobile GPS positioning
Next article:GPS Principles.Pet GPS Tracker manufacturer
Related Information
fleet gps trackers company
2023-04-23Hidden GPS Trackers
2023-04-114G GPS Tracker company
2023-04-23car gps tracker Factory
2023-04-23car gps tracker Solution
2023-04-23car gps tracker sales
2023-04-23real-time gps tracking Solution
2023-04-23car gps tracker Vendor
2023-04-23gps vehicle tracker distributors
2023-04-23gps tracker device Factory
2023-04-23GF70L-Solar Magnetic Asset GPS Tracker
2023-10-07G08L - 4inch Smart Tail Light Tracker
2022-06-20G183 serials -JOBD GPS Tracker
2022-09-06TK100N- Multi functional GPS Tracker
2023-10-06P60L Personal gps tracker
2022-06-21GPS navigation solution
2022-12-10Schematic diagram of GPS satellite navigation system
2022-11-25GPS application field
2022-08-13gps tracker purchase points?
2022-09-15GPS performance indicators
2022-08-26Civil GPS positioning accuracy will reach 1 meter error
2023-02-22GPS selection.Hidden GPS Trackers wholesale
2023-06-28How does GPS develop
2022-12-13The Development of GPS in the New Century
2022-09-24GPS/GPRS power-off terminal
2022-12-20GPS intelligent bus stop
2022-12-09What is the best GPS tracker to choose?
2022-09-09Fire truck installed with GPS global positioning navigation system
2023-02-06Vehicle GPS
2022-12-08Application introduction in agriculture.gps tracker with magnet manufacturer
2023-05-06