truck tracking webfleet solutions

Home > NEWS > Other information > truck tracking webfleet solutions

Company News

Industry News

What are the information methods sent by GPS reference stations.gps tracker app Manufacturing

source:truck tracking webfleet solutions release time:2023-06-14 Hits:     Popular:realtime gps tracker online

  

  1. Principle of position difference

  This is the simplest differential method, and any GPS receiver can be modified and composed of this differential system. After observing four satellites, the GPS receiver installed on the reference station can perform three-dimensional positioning and calculate the coordinates of the reference station. Due to orbital errors, clock errors, SA effects, atmospheric effects, multipath effects, and other errors, the calculated coordinates are different from the known coordinates of the reference station, and there is a difference. The reference station uses a data link to send out this correction number, which is received by the user station, and corrects the calculated user station coordinates.

  The final corrected user coordinates have eliminated the common errors between the reference and user stations, such as satellite orbit errors, SA effects, atmospheric effects, etc., improving positioning accuracy. The above prerequisite is for the observation of the same group of satellites by both the reference station and the user station. The position difference method is suitable for situations where the distance between the user and the reference station is within 100km.

  2. Pseudorange difference principle

  Pseudorange difference is currently the most widely used technique. Almost all commercial differential GPS receivers use this technology. The RTCM SC-104 recommended by the International Maritime Radio Commission also adopts this technology.

  The receiver on the reference station requires the distance from it to the visible satellite and compares the calculated distance with the measurement value containing errors. Utilize a α-β The filter filters this difference and calculates its deviation. Then, the ranging errors of all satellites are transmitted to the user, who uses this ranging error to correct the measured pseudo range. Finally, users can use the corrected pseudo distance to solve their own position, which can eliminate common errors and improve positioning accuracy.

  Similar to position difference, pseudo range difference can cancel out the common error between two stations, but as the distance from the user to the reference station increases, system error occurs, which cannot be eliminated by any difference method. The distance between the user and the reference station has a decisive impact on accuracy.

  3. Principle of carrier phase difference

  Carrier phase difference technology, also known as RTK (real time kinetics), is based on real-time processing of the carrier phases of two measurement stations. It can provide real-time three-dimensional coordinates of observation points and achieve high-precision at the centimeter level.


Read recommendations:

fleet gps tracking Production

cantrack g05

Mini Sized GPS Tracker PCBA

Main functions of GPS.Gps speed limiter supplier

GPS emergency help

Last article:GPS positioning manufacturers introduce the composition of satellite positioning systems.Dog gps tra

Next article:What are the main parts of the receiver of the car GPS

Related Information

Dog gps tracker wholesale

2023-04-23

pet gps tracker cat manufacturer

2023-03-16

real-time gps tracking Production

2023-04-23

fleet gps trackers Processing

2023-04-23

cat gps tracker sales

2023-04-11

gps tracker online wholesale

2023-04-23

real-time gps tracking Solution

2023-04-23

simple gps tracking Solution

2023-04-23

gps tracker no monthly fee

2023-03-16

Dog gps tracker price

2023-04-23

TK100B- Accurate Pro version GT06/TK100

2023-10-06

personal gps tracker Production

2022-09-06

3000mAh Magnet Asset GPS Tracker

2025-03-31

G09L -6 inch Tail light tracker

2022-06-20

TK200AM-Disposable GPS Tracker

2022-06-21

Several ways of GPS mobile phone positioning

2022-10-21

Why do the antennas need to be facing up when installing a GPS tracker?

2022-09-08

Classification of GPS antenna

2022-11-12

What is the difference between the Internet of Things card or mobile phone SIM card used?truck track

2023-03-23

GPS Buying Mistakes

2022-10-09

GPS navigator software.Hidden GPS Trackers wholesaler

2023-06-10

Portable Wireless GPS Tracker

2022-09-20

GPS transmission network.Hidden GPS Trackers Solution

2023-07-10

Beiqi Foton independently researches and develops the Internet of Vehicles system, Beidou and GPS du

2022-08-11

Development Trend of Automotive GPS Positioning System

2022-08-26

What kind of gps tracker is easy to use?

2022-09-08

GPS monitoring information platform ensures smooth traffic

2022-12-17

What are GPS in aviation flight navigation.gps tracker for trailer distributors

2023-04-10

gps vehicle tracker.What are the installation requirements for GPS locators reflected in

2023-10-17

GPS development

2022-11-26