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:
C32Plus (9~90V E-bikes/Motorcycle/Car gps tracker)
Which vehicles are the on-board GPS locator terminals applied to.gps vehicle tracker
The basic principle of GPS navigation system is briefly introduced
Last article:The GPS implementation plan has three phases
Next article:Installation of GPS navigator
Related Information
gps vehicle tracker company
2023-04-11Gps speed limiter Factory
2023-04-23pet gps tracker cat wholesaler
2023-03-16Gps speed limiter sales
2023-04-23gps vehicle tracker wholesale
2023-04-11GPS Tracking supplier
2023-04-114G GPS Tracker for vehicles
2023-03-16Cantrack TK100
2023-03-16realtime gps tracker online
2023-04-11gps vehicle tracker supplier
2023-04-11G900LS 8 Lines-4G Car GPS Tracker
2025-03-314G Wired GPS Tracker PCBA
2022-06-17personal gps tracker Production
2022-09-06GF30 Magnet GPS tracker with Voice listen
2022-06-21G500L -4G OBD GPS Tracker
2022-09-06Detailed introduction to the function of the car GPS positioner.gps tracker no monthly fee distribut
2023-03-10The principle of GPS indoor positioning technology
2022-08-12Simple introduction of GPS control part.obd2 gps tracker verizon wholesale
2023-05-11Does the GPS positioner help the battery car anti -theft?vehicle gps tracker webfleet solutions
2023-03-08Application of GPS in Car Tracker
2022-09-26Japan develops global positioning system independently
2022-09-05GPS selection.Hidden GPS Trackers wholesale
2023-06-28Composition of GPS system
2022-08-12The main role of driving recorder.gps tracker with magnet Manufacturing
2023-04-15Car GPS Navigation System
2022-11-04GPS addressing locator
2023-07-27mini gps tracker.GPS positioning
2023-11-14Why do the antennas need to be facing up when installing a GPS tracker?
2022-09-08Car GPS one click alarm.fleet gps tracking Solution
2023-07-21Introduction to GPS
2022-09-28