source:Industry News release time:2022-07-11 Hits: Popular:realtime gps tracker online
1. Satellite trajectory: There are 24 GPS satellites orbiting the earth along six orbits (in groups of four). Generally, there are no more than 12 satellites on the same side of the earth. Most GPS receivers can track 8 to 12 satellites. satellite. At least 3 satellites are required to calculate LAT/LONG (2D) coordinates. Add one more to calculate 3-dimensional coordinates. For a given location, the GPS receiver knows which satellites are nearby at the time because it is constantly receiving updates from the satellites.
2. Parallel channels: Some consumer GPS devices have 2 to 5 parallel channels to receive satellite signals. Because up to 12 satellites may be visible (the average is 8), this means that the GPS receiver must visit each satellite in sequence to obtain information about each satellite. Most GPS receivers on the market are of the 20-parallel channel type, which allows them to continuously track the information of each satellite. The advantages of 12-channel receivers include fast cold start and initialization of satellite information, and can have more information in forest areas. good reception. Generally 20-channel receiver does not needTo external antenna, unless you are in an enclosed space, such as cabin, car.
3. Positioning time: This is the time it takes to determine your current location when you restart your GPS receiver. For a 20-channel receiver, if you are near the location of the last fix, the fix time is generally 3 to 5 minutes for a cold start and 15 to 30 seconds for a hot start.
4. Positioning accuracy: The horizontal position positioning accuracy of most GPS receivers is about 2.93m to 29.3m.
5. Signal interference: To give you a good positioning, the GPS receiver needs at least 3 to 5 satellites to be visible. If you're in a canyon or on a street lined with tall buildings, or in a dense jungle, you may not be able to communicate with enough satellites to be able to locate or get only two-dimensional coordinates. Also, if you are inside a building, you may not be able to update your location, some GPS receivers have separate antennas that can be attached to the windshield, or an external antenna that can be placed on the roof of the car, which helps you receivers get more satellite signals.
6. Physical indicators: When purchasing GPS equipment, physical indicators such as size, weight, display screen, waterproof, shockproof, dustproof performance, high temperature resistance, and power consumption must be considered.
7. What is the baud rate of general GPS?
4800. Now there are more and more GPS signs that can provide higher speed, but it is not necessary for GPS applications, and some will cause system instability.
8. Why is my GPS always floating around, even when standing still?
Due to the relatively weak ability to collect satellites, the earlier GPS always had a disconnection, especially when it was used for navigation in the city, which caused a lot of inconvenience to travel. Some civilian GPS chips developed later included GPS signals with insufficient signals, which caused the phenomenon of drift. But in the same situation, the older GPS products will be completely disconnected, and will not start accepting until a satellite with a strong enough signal can be found. So this is a relatively contradictory choice, but with the continuous development and upgrading of software and hardware, I believe this situation will become less and less.
9. I was able to locate yesterday, but I can't locate it today, why?
Generally, the GPS was not properly turned off when it was last used. Please restart the device and connect it again. If it still doesn't work, cold start the GPS. In future use, be sure to disable GPS in the software before turning off or unplugging the GPS receiver.
Read recommendations:
Gps speed limiter manufacturer
VSL100 GPS Speed Limiter, Speed Governor
Last article:how to install gps locator
Next article:Application of GPS in Logistics Industry
Related Information
fleet gps trackers
2023-04-23Best hidden gps trackers
2023-03-16Gps speed limiter distributors
2023-04-23van tracker webfleet solutions
2023-03-164G GPS Tracker Factory
2023-04-23real-time gps tracking Solution
2023-04-23fleet gps trackers supplier
2023-04-23portable gps tracker
2023-04-11real-time gps tracking Processing
2023-04-23personal gps tracker
2023-04-113 Years Disposable Asset GPS Tracker
2024-10-17G09L -6 inch Tail light tracker
2022-06-20GF20-Mini Magnet GPS Tracker
2022-06-21G05N Vehicle Tracker
2022-06-21GF70L-Solar Magnetic Asset GPS Tracker
2023-10-07Do you know the working principle of the pet GPS positioner?realtime gps tracker online wholesaler
2023-03-10GPS positioning tracker function
2022-12-15Domestic GPS scope of application
2022-11-01Solar GPS positioning tracker solve worries
2023-02-23The difference between mobile GPS positioning and car GPS positioning.gps tracker online wholesaler
2023-06-20GPS signal is briefly introduced
2022-11-02How to ensure the personal safety of the elderly
2023-02-22Introduce how to use wireless GPS locators
2023-06-27GPS network security ideas
2022-08-12How to buy GPS positioner.obd2 gps tracker verizon
2023-03-14China Beidou Navigation System?
2022-11-17Do I need to pay information for using GPS?
2022-10-10How to purchase GPS.gps tracker with magnet distributors
2023-08-25Opportunities brought by national policies for GPS industry
2022-12-17Advantages of GPS technology
2022-10-22