source:truck tracking webfleet solutions release time:2022-10-14 Hits: Popular:realtime gps tracker online
The basic principle of GPS positioning is based on the instantaneous calculation data of the instantaneous position of the high -speed movement, and the method of the space distance is used to determine the location of the test point. As shown in the figure, assuming that when T is placed on the ground to be placed on the ground at the ground, the GPS receiver can be measured, and the time for the GPS signal to reach the receiving machine △ T, plus other data such as the satellite star calendar received by the receiver can determine the following four four. Formula:
In the above four equations, the measuring point coordinates X, Y, Z, and VTO are unknown parameters, where DI = C △ TI (i = 1, 2, 3, 4).
DI (i = 1, 2, 3, 4) is satellite 1. Satellite 2, satellite 3. Satellite 3. Satellite 3, satellite 4 to receiver.
△ TI (i = 1, 2, 3, 4) is the time of satellite 1. Satellite 1. Satellite 2, satellite 3, and satellite 4.
C is the speed of transmission of GPS signal (ie, the speed of light).
The meaning of each parameter in the four equations is as follows:
X, Y, Z are the spatial right -angle coordinates of the coordinates to be tested.
XI, Yi, Zi (i = 1, 2, 3, 4) are satellite 1. Satellite 2, Satellite 3, Satellite 4 in the right -angle coordinates of the space at the time of T.
VT I (i = 1, 2, 3, 4) The bells of satellite clocks with satellite 2, satellite 2, satellite 3, and satellite 4 are provided by the satellite star calendar.
VTO is the bell of the receiver.
From the above four equations, the clock difference of the coordinates X, Y, Z and the receiver of the coordinates to be measured at the above four equations.
GPS satellite sends its own star parameters and time information. Under the independent GPS mode, the positioning terminal receives the information through the antenna from the GPS satellite, and the three -dimensional position, three -dimensional direction and motion speed and time information of the receiving machine are calculated. Because satellites are directly broadcasting from high -altitude, the signal is weak and the transmission rate is slow. This gives the positioning terminal a certain problem.
Read recommendations:
4G GPS Tracker for vehicles Production
Last article:The GPS implementation plan has three phases
Next article:Installation of GPS navigator
Related Information
real-time gps tracking company
2023-04-23GPS Tracker for vehicles Manufacturing
2023-03-16car gps tracker supplier
2023-04-23GPS Tracker for vehicles Vendor
2023-03-16pet gps tracker cat supplier
2023-03-16GPS Rastreader
2023-03-16real-time gps tracking Manufacturing
2023-04-23Cantrack GPS Tracker
2023-03-16obd2 gps tracker verizon wholesale
2023-03-16Gps speed limiter maker
2023-04-23G08L - 4inch Smart Tail Light Tracker
2022-06-20VSL100 GPS Speed Limiter, Speed Governor
2022-06-19C32 (9~90V E-bikes/Motorcycle/Car gps tracker)
2022-06-21GF30 Magnet GPS tracker with Voice listen
2022-06-21TK100B- Accurate Pro version GT06/TK100
2023-10-06Functions of GPS
2022-10-12GPS military application.plug & play Obd gps tracker distributors
2023-04-24GPS positioner manufacturers introduce the stages of the video surveillance software from the system
2023-05-09Handheld GPS Device
2022-08-18GPS data format types and positioning information extraction
2022-08-10GPS installation precautions.mini plastic buckles custom
2023-06-06The basic architecture and characteristics of GPS
2022-10-15gps vehicle tracker.What's wrong with the inaccurate positioning of the ultra long standby GPS locat
2023-10-11The GPS navigation function is diverse. Let's take a closer look at the GPS navigation voice prompt
2023-04-14What basic functions should Beidou positioning equipment have.Gps speed limiter
2023-10-10What is GPS
2022-12-02GPS data.portable gps tracker Manufacturing
2023-05-20Tongda GPS positioning monitoring system technology for you
2022-08-24Features of GPS
2023-02-17Detailed introduction to the function of the car GPS positioner.gps tracker no monthly fee distribut
2023-03-10