What are the disadvantages of GPS

1. GPS cannot provide 100% positioning, let alone the nonsense of indoor positioning - GPS is not like mobile phone broadcasts, and signals can be received anywhere. Many things can affect GPS reception, including star distribution in the sky, buildings, viaducts, radio waves, and leaves.

, grid thermal paper, etc., there are too many things that will affect it. Generally speaking, the area of ??the sky that can be seen when looking up from the GPS position is the area where the GPS can receive signals.

2. Don’t use it once or twice, or for a day or two, to decide whether the GPS is good or bad - since the status of sky satellites is different every day, it may be possible for the same place to receive full signals in the morning but not be able to locate at night.

The positioning situation has been bad for several days.

3. To compare the quality of a GPS, you must compare it at the same time and in the same place - many people who buy a new GPS 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 results are much different. You must use them for a long time, or at the same place at the same time, to feel the difference between the two GPS.

4. The GPS reception intensity meter is no longer sufficient as a reference for purchasing a GPS - when people buy a GPS, they only look at the reception meter in the electronic map. It may have been quite accurate before, but now with GPS, in order to see the reception meter

It looks good, so there are false signals, or simulated signals, etc. The reception meter is indeed beautiful, but it may not be positioned accurately, or even display correctly.

5. There is no so-called GPS for indoor positioning - basically if there is no signal indoors, there is no signal. Real indoor positioning requires you to be indoors from cold start, but it can still position, which is the real indoor positioning, but basically indoor positioning has no meaning at all.

No, because I don't know how to navigate at home.