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:
fleetmanagement webfleet solutions
G01 Smallest Personal Old People Mini GPS Tracker for Kids
What are GPS in aviation flight navigation.gps tracker for trailer distributors
The concept of static drift of the car GPS positioner and cause.plug & play Obd gps tracker manu
Last article:Mobile GPS positioning
Next article:GPS Principles.Pet GPS Tracker manufacturer
Related Information
GPS Tracker for vehicles Vendor
2023-03-16GPS Tracking price
2023-04-11OBD GPS Tracker Vendor
2023-03-16trailer gps tracker
2023-04-11Gps speed limiter manufacture
2023-04-23gps tracker online wholesale
2023-04-23car gps tracker manufacture
2023-04-23GPS Tracking company
2023-04-11real-time gps tracking company
2023-04-23fleet gps trackers sales
2023-04-23G02M Pet Tracker
2022-06-19G06L
2022-06-21G03
2022-06-21G900LS-4G Car GPS Tracker
2023-10-06TK103B
2022-06-20Car GPS system
2023-02-09What is the Beidou GPS positioner?gps tracker no monthly fee distributors
2023-03-28How to implement the GPS monitoring system function?
2023-02-11This section describes GPS working modes
2022-11-01GPS uses traditional paper maps to find its location.realtime gps tracker online manufacturer.obd2 g
2023-04-13China Beidou Satellite Navigation System.obd11 gps tracker verizon manufacture
2023-03-11Precautions for car GPS applications
2023-02-06GPS positioning principle
2022-11-26Car GPS has two main uses.Car gps tracking wholesaler
2023-07-20The relationship between GPS and Beidou navigation?Asset tracking wholesaler
2023-02-18The functions of intelligent GPS.vehicle gps tracker webfleet solutions
2023-08-08What is the function of gps tracker.mileage tracking webfleet solutions
2023-03-13GPS monitoring system develops rapidly
2023-02-08GPS pseudo-range difference principle
2022-10-11Simulator test GPS
2022-10-10