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:
GPS Tracker for vehicles Vendor
4G GPS Tracker for vehicles manufacturer
What are the functions of the driving recorder?obd-II port gps tracker Manufacturing
The current status and development trend of China's car navigation industry.gps tracker for trailer
Last article:GPS positioning monitoring system
Next article:GPS navigation solution
Related Information
Asset GPS Tracker
2023-03-16vehicle gps tracker webfleet solutions
2023-03-164G GPS Tracker for vehicles Manufacturing
2023-04-23gps tracker device Factory
2023-04-23gps vehicle tracker custom
2023-04-23Hidden GPS Trackers supplier
2023-04-23car gps tracker maker
2023-04-23Best hidden gps trackers
2023-04-114G GPS Tracker for vehicles Vendor
2023-04-23gps vehicle tracking
2023-03-16TK08AL- RFID Car GPS Tracker
2023-10-07G01 Smallest Personal Old People Mini GPS Tracker for Kids
2022-06-19G200NY -Cow/Camel GPS Tracker
2022-06-21Mini Sized GPS Tracker PCBA
2022-06-17GF20-Mini Magnet GPS Tracker
2022-06-21Introduction to GPS Navigation
2022-07-23LBS(Galileo) positioning
2022-10-25How to connect the mobile phone of the Beidou GPS positioner?gps tracker no monthly fee wholesaler
2023-04-15The application processor completes the GPS/Galileo function
2022-10-15Handheld GPS navigation products will enter a period of rapid development.pet gps tracker cat wholes
2023-05-27GPS RTK technology
2023-07-03Schematic diagram of GPS satellite navigation system
2022-12-29The purpose and prospect of the GPS vehicle management system.rastreadores gps wholesaler
2023-03-15GSM function of GPS.gps tracker no monthly fee Production
2023-08-15mini gps tracker.The role of vehicle GPS satellite positioning system in logistics transportation
2023-11-02GPS reference standard.gps tracker online supplier
2023-07-20Selection of GPS hardware architecture
2022-12-08Dual GPS frequency positioning, improve accuracy.Portable car gps systems distributors
2023-03-11The following aspects mainly affect the performance of GPS antenna
2022-11-12Vehicle trajectory knowledge of vehicle GPS positioner popularization.gps tracker no monthly fee
2023-03-22