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:
Are the mortgage loan cars installed in the car GPS terminal?mileage tracking webfleet solutions
How to find the GPS locator on the car?obd2 gps tracker verizon supplier
Last article:The GPS implementation plan has three phases
Next article:Installation of GPS navigator
Related Information
gps vehicle tracker wholesaler
2023-04-11Magnetic gps tracker price
2023-04-23plug & play Obd gps tracker
2023-04-11personal gps tracker
2023-03-16real-time gps tracking maker
2023-04-23realtime gps tracker online
2023-03-16mini gps tracker Manufacturing
2023-04-23real-time gps tracking Solution
2023-04-23gps tracker for bike supplier
2023-04-23fleet gps trackers
2023-04-11P901 4G ID Card GPS Tracker Smart Walkie-talkie
2025-07-11P60L Personal gps tracker
2022-06-21NB20 -4G Bluetooth Smart Pet Tracker
2022-06-21TK103B
2022-06-20G09L -6 inch Tail light tracker
2022-06-20GPS Landmark or Waypoint and ROUTE
2022-11-23Why does my country participate in the "Galileo" plan
2023-02-11GPS navigation function
2022-07-23Classification of GPS antenna
2022-11-12Advantages of Bluetooth GPS
2022-10-19Introduction to GPS Watch.4G GPS Tracker for vehicles Solution
2023-08-09The role of GPS satellite.GPS Tracker for vehicles manufacture
2023-04-21Gps speed limiter.Selection of Client Software for Unit Vehicle GPS Satellite Positioning System
2023-11-11Beiqi Foton independently researches and develops the Internet of Vehicles system, Beidou and GPS du
2022-08-11Why is it recommended to install the GPS vehicle positioning system?Portable car gps systems
2023-03-24Advantages of Automotive Beidou/GPS Positioning Products.4G GPS Tracker for vehicles supplier
2023-09-15Hardware improvements for third-generation chips.gps tracker für auto Factory
2023-07-06GPS positioner helps logistics and transportation companies manage transparency and intelligence.obd
2023-03-28China's Beidou GPS system
2022-10-26Review of GPS development in the past ten years
2022-12-20