source:truck tracking webfleet solutions release time:2022-09-22 Hits: Popular:realtime gps tracker online
What are the GPS positioning methods
There are various methods of GPS positioning, and users can use different positioning methods according to different purposes. GPS positioning methods can be divided according to different classification standards as follows:
1. According to the observations used for positioning
Pseudo-range positioning
The observations used in pseudorange positioning are GPS pseudorange observations, and the pseudorange observations used can be either C/A code pseudoranges or P code pseudoranges. The advantages of pseudorange positioning are that the data processing is simple, the requirements for positioning conditions are low, there is no problem of ambiguity in the whole circle, and real-time positioning can be easily realized; The accuracy of the P-code pseudorange is generally 3 meters, and the accuracy of the P-code pseudorange observations is generally about 30 centimeters, resulting in low positioning accuracy. question.
Carrier Phase Positioning
The observation value used in carrier phase positioning is the carrier phase observation value of GPS, that is, L1, L2 or some linear combination of them. The advantage of carrier phase positioning is that the accuracy of the observation value is high, generally better than 2 mm; its disadvantage is that the data processing process is complicated, and there is a problem of ambiguity in the whole circle.
Second, according to the positioning mode
Absolute positioning
Absolute positioning, also known as single-point positioning, is a mode in which a receiver is used for positioning, and what it determines is the absolute coordinates of the receiver antenna. The feature of this positioning mode is that the operation method is simple and can be operated by a single machine. Absolute positioning is generally used in applications where navigation and accuracy are not critical.
Relative positioning
Relative positioning is also called differential positioning. This positioning mode uses two or more receivers to observe a group of the same satellites at the same time to determine the mutual positional relationship between the receiver antennas.
3. According to the time when the positioning result is obtained
real-time positioning
Real-time positioning is to calculate the position of the receiver antenna in real time according to the data observed by the receiver.
Non-real-time positioning
Non-real-time positioning, also known as post-processing positioning, is a method for positioning by post-processing the data received by the receiver.
4. According to the movement state of the receiver during positioning
Dynamic positioning
The so-called dynamic positioning means that when GPS positioning is performed, it is considered that the position of the receiver's antenna changes during the entire observation process. That is, during data processing, the position of the receiver antenna is taken as a quantity that changes over time. Dynamic positioning is divided into two categories: Kinematic and Dynamic.
static positioning
The so-called static positioning means that when GPS positioning is performed, it is considered that the position of the receiver's antenna remains unchanged during the entire observation process. That is, in data processing, the position of the receiver antenna is regarded as a quantity that does not change with time. In measurement, static positioning is generally used for high-precision measurement and positioning. The specific observation mode is that multiple receivers perform static and synchronous observations at different stations, and the time varies from minutes, hours, or even tens of hours.
Read recommendations:
Last article:Factors related to GPS satellites
Next article:Brief introduction of GPS control part
Related Information
4G GPS Tracker for vehicles Processing
2023-04-23mini gps tracker distributors
2023-04-23fleet gps tracking wholesale
2023-04-23Car gps tracking wholesaler
2023-04-234G GPS Tracker for vehicles Manufacturing
2023-04-23fleet gps tracking Solution
2023-04-23Gps speed limiter Manufacturing
2023-04-23real-time gps tracking Production
2023-04-23Cantrack G05
2023-03-16fleet gps tracking Factory
2023-04-23TK100 (GT06) Vehicle Tracker
2022-06-20G183 serials -JOBD GPS Tracker
2022-09-064G Wired GPS Tracker PCBA
2022-06-17VSL100 GPS Speed Limiter, Speed Governor
2022-06-19G09L -6 inch Tail light tracker
2022-06-20Sleeping without a gps tracker
2022-09-09The suction cup of GPS bracket is easy to loosen the problem.realtime gps tracker online Manufacturi
2023-04-12GPS Function Introduction
2022-11-02Vehicle GPS positioning management system
2022-11-04Car GPS reference labeling.GPS Tracker for vehicles manufacturer
2023-05-13What are the GPS satellites?gps tracker for trailer manufacturer
2023-04-21GPS coordinates (CoordInate).fleet gps trackers manufacture
2023-06-10GPS signal in the air
2022-11-08How to prevent the disassembly of the car GPS locator?personal gps tracker manufacturer
2023-03-15gps vehicle tracker.Wireless GPS locator
2023-10-20The Application of GPS in Automobile Tracker.gps tracker for trailer distributors
2023-08-25GPS positioner helps logistics and transportation companies manage transparency and intelligence.obd
2023-03-28Mobile number positioning, tracking, and finding people operation process.portable gps tracker whole
2023-09-14What is the Beidou GPS positioner?gps tracker no monthly fee distributors
2023-03-28GPS system principle
2023-02-09