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 wholesale
G900LS 8 Lines-4G Car GPS Tracker
Where is the GPS positioner generally installed.gps tracker with magnet distributors
The main problems affecting the development of the GPS industry
Last article:The GPS implementation plan has three phases
Next article:Installation of GPS navigator
Related Information
simple gps tracking wholesaler
2023-04-23mini gps tracker
2023-04-11obd2 tracker wholesale
2023-03-16Pet GPS Tracker supplier
2023-03-16mini gps tracker company
2023-04-234G GPS Tracker for vehicles distributors
2023-04-23fleet gps tracking Solution
2023-04-23Special Looks GPS Tracker PCBA
2023-03-16plug & play Obd gps tracker
2023-03-16Gps speed limiter Manufacturing
2023-04-23G02M Pet Tracker
2022-06-19P901 4G ID Card GPS Tracker Smart Walkie-talkie
2025-07-11P60L Personal gps tracker
2022-06-21G06L
2022-06-2110000mAh Magnetic Asset GPS Tracker
2025-04-08Requirements for logistics tracking and monitoring
2022-12-01What are the different types of car GPS?
2023-06-15GPS Basics
2022-07-11GPS setting RF front end
2022-11-08Difficulties in GPS indoor navigation
2022-11-03The difference between mobile GPS positioning and car GPS positioning.gps tracker online wholesaler
2023-06-20The Application of GPS in Automobile Tracker.gps tracker for trailer distributors
2023-08-25Application introduction in GPS Meteorology.obd2 gps tracker verizon Production
2023-05-06GPS positioning manufacturers introduce the composition of satellite positioning systems.Dog gps tra
2023-06-14Handheld GPS Device
2022-08-18Solution to faults such as GPS vehicle management system not being online or offline.car gps tracker
2023-09-23GPS introduction.real-time gps tracking Vendor
2023-05-27What is the Galileo Plan?
2022-12-12GPS Global Positioner.fleet gps tracking wholesaler
2023-05-27Types of GPS chips used by common GPS receivers
2022-12-30