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Why is the gps locator showing offline?

source:Industry News release time:2022-07-19 Hits:     Popular:realtime gps tracker online


  

  There are more and more users using gps locators now. For this emerging high-tech product, not many people really understand him. Many people don't understand why the locator is displayed offline? In order to let you know more about the GPS locator, today, let's take a look at the most basic conditions for the GPS locator to work - search star.

  Star search is the premise for the GPS locator to work normally. If the star search cannot be performed smoothly, the GPS locator will not work properly. Just like a mobile phone, if there is no signal, even if it has a call function, it cannot make a call. Therefore, Soxing plays a decisive role in whether the GPS locator can locate.

  Maybe some users have had such an experience. They just bought a GPS tracker and took it home, but they couldn't find any stars. When the car drove to the bottom of the bridge or the underground parking lot, the signal suddenly disappeared, thinking it was the machine. If the problem is caused by the problem, then I will find the seller to return it with various problems. In fact, the equipment is in good condition, and there is no problem.

  GPS stands for Global Positioning System. Simply put, this is a satellite system consisting of 24 satellites covering the globe. Able to provide real-time, all-weather and global navigation services. GPS global satellite positioning system consists of three parts: space part - GPS constellation; ground control part - ground monitoring system; user equipment part - GPS signal receiver. To put it simply, the user receives satellite signals through GPS, and obtains information such as the user's position and speed through signal processing, and finally realizes the purpose of using GPS for navigation and positioning.

  By understanding the principle of GPS receiving satellite signals, it is not difficult to find that the GPS satellite search depends largely on the strength of the received satellite signals, and the satellite signals are transmitted in the form of microwaves, which determines the natural climate for the search. The influence of the star is not obvious, that is to say, there is no such thing as a stronger daytime signal than the night signal at the same location, and objects with shielding materials have a more prominent impact on star search, such as high-rise buildings, closed underground Garages, heavy metal objects, and large-scale billboards, etc. Therefore, when you are in an open and open place to search for GPS satellites, the more signals you receive, the more accurate your positioning will be.

  Under normal circumstances, the GPS tracker starts to automatically search for stars immediately after it is turned on. However, there are many kinds of GPS trackers on the market, and the speed of star search is of course also fast and slow. The speed of star search is adjusted at the factory, not the faster the search star. The better, we have to analyze specific problems in detail. Generally speaking, the star search speed is inversely proportional to the accuracy, that is, if the star search speed is too fast, it is easy to cause drift. (Note: Drift is the phenomenon of inaccurate positioning and deviation of positioning). Therefore, in order to achieve a balance between search speed and accurate positioning, the products have been strictly debugged before leaving the factory, and a reasonable search speed is specified. In addition, the GPS locator does not need to search all 24 satellites, as long as more than 3 satellites are searched, it can be accurately navigated and positioned. Therefore, the statement that "the more satellites searched, the more accurate" is inappropriate. GPS locator receives GPS satellite signals, unlike mobile phone broadcasts, signals can be received anywhere, many factors will affect the GPS locator's reception of GPS, including sky star distribution status, buildings, viaducts, radio waves, leaves, grids Hot paper, etc., will affect too many things. Generally speaking, looking up from the position of the GPS locator, you can see the area of the sky, which is the area where the GPS locator can receive GPS signals.

  Since the satellite status in the sky is different every day, it may be possible for the same place to receive full messages in the morning, but unable to locate it at night. To compare the quality of the GPS locator, it must be compared at the same time. Many people who buy a new GPS tracker will say that the one I used before is better, but this is not correct, because the time and place of use are different, the final result is much worse, and it must be used for a long time, or At the same time, you can feel the difference between the two GPS locators.


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