source:truck tracking webfleet solutions release time:2023-04-23 Hits: Popular:realtime gps tracker online
????(1) Observation error. In addition to the distinguishing error, it also includes the resettlement error of receiving an antenna relative to measure. The resolution error is generally considered to be about 1%of the signal wavelength. The resettlement error mainly includes the level of the antenna and the medium error and the height of the center of the antenna phase of the antenna. For example, the antenna is 1.6 m and the flat error is 0.10, and the middle error is 2.10 mm.
????(2) The receiver is poor. The GPS receiver generally has high-precision quartz clock with a daily frequency stability of 10-11. If the synchronization difference between the receiver clock and the satellite clock is 1S, the equivalent distance error is 300 m. The method of processing the difference in the receiving machine is used as an unknown, and it is solved in the data processing; the method of poor observation value is used to weaken the impact of the receiving machine bell; Improve the time standard accuracy of the receiver.
????(3) The carrier phase observation is unknown throughout the week. It is impossible to directly determine that the carrier phase starts to change the entire week of the transmission path. At the same time, the signal tracking was interrupted and the whole week was caused by the satellite signal being blocked and disturbed by the satellite signal.
????(4) The position of the center of the antenna phase. In the GPS positioning, the observation values are based on the center position of the phase of the receiving machine antenna. In theory, the center of the antenna phase and the geometric center of the instrument should be consistent. The change, which is related to the quality of the antenna, can reach several millimeters to several centimeters. How to reduce the offset of the phase center is an urgent issue of antenna design.
Read recommendations:
real-time gps tracking company
Last article锛?The application of GPS in the traffic system.plug & play Obd gps tracker Manufacturing
Next article锛?GPS receiver work principle.gps tracker no monthly fee Manufacturing
Related Information
GPS Trackers sales
2023-04-11Gps speed limiter wholesale
2023-04-23gps vehicle tracker Processing
2023-04-11vehicle gps tracker manufacturer
2023-03-16Portable car gps systems
2023-03-16car gps tracker distributors
2023-04-23GPS Tracker wholesaler
2023-03-16car gps tracker Processing
2023-04-23mini gps tracker sales
2023-04-11Fleet management expert
2023-03-16G06L
2022-06-21G500M-Mini GPS Tracker
2022-06-20GF70L-Solar Magnetic Asset GPS Tracker
2023-10-07G09L -6 inch Tail light tracker
2022-06-20VSL100 GPS Speed Limiter, Speed Governor
2022-06-19GPS uses traditional paper maps to find its location.realtime gps tracker online manufacturer.obd2 g
2023-04-13Development of vehicle GPS
2022-12-13The following aspects mainly affect the performance of GPS antenna
2022-11-12Function overview of PS handheld machine
2022-10-14Application of GPS in Car Navigation and Traffic Management
2022-07-13The manufacturer shared the function of GPS navigation with everyone.gps tracker with magnet price
2023-06-17Handheld GPS Device
2022-08-18GPS elevation measurement should be carried out according to the following requirements.gps tracker
2023-07-21mini gps tracker.What is the principle of GPS
2023-11-16The Meaning of GPS.4G GPS Tracker for vehicles wholesaler
2023-08-07GPS China Beidou navigation satellite
2022-10-20GPS base station positioning
2023-02-15Mobile GPS positioning
2023-07-13GPS system composition.mini gps tracker manufacture
2023-07-13Shared bicycles require the installation of Beidou/GPS satellite positioning module.GPS Tracker
2023-09-22