source:Industry News release time:2023-02-08 Hits: Popular:realtime gps tracker online
1. Satellite trajectory
Here are 24 GPS satellites running around the earth along six orbits (a group of four). Generally, there are no more than 12 satellites on the same side of the earth. Most GPS receivers can track 8-12 satellites. Calculating LAT/Long (2D) coordinates requires at least 3 satellites. You can calculate 3 -dimensional coordinates. For a given position, the GPS receiver knows which satellites are near at this time because it constantly receives a update signal from the satellite.
2. Paying channel
Some consumer GPS devices have 2 to 5 parallel channels to receive satellite signals. Because at most 12 satellites are visible (the average is 8), which means that the GPS receiver must access each satellite in order to obtain the information of each satellite.
Most of the GPS receivers on the market are 12 parallel channel types, which allows them to continuously track the information of each satellite. The advantages of the 12 -channel receiver include the information of the fast -cold start and initialization satellite. Good receiving effect. Generally, the 12 -channel receiver does not require an external antenna, unless you are in a closed space, such as the cabin and compartment.
3. Positioning time
This means that when you restart your GPS receiver, it determines the time required for the current location. For the 12 -channel receiver, if you are near the last positioning position, the positioning time when the cold start is generally 3-5 minutes, and the hot start is 15-30 seconds. For the 2 channel receiver, most of the time when the cold starts exceeds more than the cold startup exceeding the starting start, most of the when the cold starts exceeds more than the cold startup exceeding the starter. 15 minutes, 2 to 5 minutes at the time of hot start.
4. Positioning accuracy
The level positioning accuracy of most GPS receivers is about 5m to 10m, but this is only when SA is not turned on.
5. DGPS function
In order to minimize the impact of the refraction of the SA and the atmosphere, there is a device called the DGPS sender. It is a fixed GPS receiver (set in a radius of 100km to 200km at a exploration site) to receive the satellite signal. Compared, then calculated the "difference", which is very close to the impact of the refraction of SA and the atmosphere. It sends this difference, and other GPS receivers can use it to obtain a more accurate position reading (5m to 10m or less or less Error).
Read recommendations:
TK100B- Accurate Pro version GT06/TK100
Why do the antennas need to be facing up when installing a GPS tracker?
The application processor completes the GPS/Galileo function
Last article:GPS positioning monitoring system
Next article:GPS navigation solution
Related Information
Dog gps tracker Production
2023-04-23realtime tracking device
2023-03-16Car gps tracking
2023-04-11Asset GPS Tracker
2023-03-16pet gps tracker cat
2023-03-16gps vehicle tracker Factory
2023-04-23pet gps tracker cat sales
2023-03-16pet gps tracker cat custom
2023-04-23personal gps tracker distributors
2023-04-11car gps tracker Solution
2023-04-23G02M Pet Tracker
2022-06-19G900LS J16-4G Car GPS Tracker
2023-10-06G900LS 8 Lines-4G Car GPS Tracker
2025-03-313000mAh Magnet Asset GPS Tracker
2025-03-31TK08AL- RFID Car GPS Tracker
2023-10-07GPS vehicle satellite positioning simulation system design
2023-02-06GPS setting RF front end
2022-11-08How to use the Beidou GPS positioner?realtime gps tracker online Processing
2023-04-14What are the functions of the driving recorder?obd-II port gps tracker Manufacturing
2023-04-14The GPS positioner on the electric car is installed to allow the city's traffic safety and intellige
2023-03-11gps vehicle tracker.The role of installing GPS satellite positioning devices in the sales and leasin
2023-10-27The cause of error in the GPS vehicle positioning system
2023-04-03Introduction to GPS Watch.4G GPS Tracker for vehicles Solution
2023-08-09The working principle and equipment composition of the GPS positioning management system.obd-II port
2023-05-06Electric car is equipped with GPS positioning function and recovered the same day after being stolen
2022-08-11The application processor completes the GPS/Galileo function
2022-10-15Precautions for using rechargeable GPS car locator terminals
2023-09-13What kind of Bluetooth GPS do you choose?fleetmanagement webfleet solutions
2022-11-16How long can the historical trajectory records of the car GPS positioning system be maintained.Car g
2023-09-20Where is the car GPS locator usually installed in a car?plug & play Obd gps tracker distributors
2023-03-25