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:
3 Years Disposable Asset GPS Tracker
Detailed introduction to GPS satellite constellation.plug & play Obd gps tracker wholesaler
Last article:GPS positioning monitoring system
Next article:GPS navigation solution
Related Information
Pet GPS Tracker custom
2023-04-11gps tracker online wholesale
2023-04-23trailer gps tracker
2023-04-11Gps speed limiter Processing
2023-04-23Car gps tracking distributors
2023-04-23gps tracker for kids supplier
2023-04-23Pet GPS Tracker sales
2023-04-11OBD GPS Tracker sales
2023-03-16real-time gps tracking maker
2023-04-23gps tracker with magnet
2023-04-11G900LM-4G Car Mini GPS Tracker
2025-03-25P60L Personal gps tracker
2022-06-21G06L- 4G Car GPS Tracker
2022-09-06G500L -4G OBD GPS Tracker
2022-09-06TK103B
2022-06-20Why does China Beidou dare to compete with the first tier GPS team?
2022-11-17GPS installation points
2022-10-08GPS Locator Operation Instructions
2022-08-10Positioning Technology Based on GPS Mobile Network
2022-10-10Does gps tracker cost traffic?
2022-09-15The main role of driving recorder.gps tracker with magnet Manufacturing
2023-04-15GPS Tracking Monitoring Promotes Mobile Logistics Management
2022-12-30The difference between GPS positioning and mobile positioning.obd2 gps tracker verizon manufacture
2023-08-03How to judge the quality of a car GPS locator?vehicle gps tracker webfleet solutions
2023-03-21GPS navigation phone.portable gps tracker Solution
2023-06-07GPS design idea and scheme
2022-11-18gps vehicle tracker.The European Space Agency is seeking 5G to enhance GPS functionality.
2023-11-15What is GPS?
2022-12-14Instructions for the operation of the built -in receiver of the car positioning terminal
2023-04-03GPS coordinates.gps tracker for trailer wholesaler
2023-08-12