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:
TK100N- Multi functional GPS Tracker
GPS tracking purchase method.4G GPS Tracker for vehicles Manufacturing
Where is the GPS positioner generally installed.gps tracker with magnet distributors
Last article:The GPS implementation plan has three phases
Next article:Installation of GPS navigator
Related Information
4G GPS Tracker for vehicles maker
2023-04-23Pet GPS Tracker distributors
2023-03-16gps vehicle tracker distributors
2023-04-11Car gps tracking price
2023-04-11Pet GPS Tracker
2023-04-11Dog gps tracker custom
2023-04-23Pet GPS Tracker Vendor
2023-03-16car gps tracker manufacturer
2023-04-23fleet solution webfleet solutions
2023-03-16obd-II port gps tracker
2023-03-16TK100N- Multi functional GPS Tracker
2023-10-06NB20 -4G Bluetooth Smart Pet Tracker
2022-06-21TK200AM-Disposable GPS Tracker
2022-06-21G06L
2022-06-21G183 serials -JOBD GPS Tracker
2022-09-06GPS system function
2022-08-05What are the functions of car GPS locators.obd-II port gps tracker maker
2023-06-16The main purpose of GPS satellite positioning
2022-07-11Manufacturer introduces in detail the component of the car positioner.simple gps tracking wholesale
2023-06-08Choice becomes difficult? A variety of high-performance GPS are recommended
2022-08-10Is there really a GPS positioner with a free card?gps tracker für auto webfleet solutions
2023-03-08GPS data reception
2022-10-27Signal from GPS receiver
2022-11-08Simulator test GPS
2022-10-10Why do cars load a car GPS positioner.rastreador de GPS wholesale
2023-03-15GPS receiver host.gps tracker no monthly fee supplier
2023-05-11Instructions for the operation of the built -in receiver of the car positioning terminal
2023-04-03Development of GPS chips.Car gps tracking manufacture
2023-07-05Timing method of GPS synchronous clock
2022-11-18GPS positioning principle
2022-10-14