In past experience, we believe that a closed space can block GPS signals, but in fact not the case. Some family car may also not receive the signal in the car, we generally think that may be because the car film effects. We may have also have some questions, do not thin film will be able to cut off the GPS signals it?
Today we took the daily lives of some of the more common obstacles bits we test, we can find the original environment is not fully closed condition blocking the GPS signal, the object of the material is the GPS signal killer. But generally as long as we use in the outdoor
car GPS navigation are difficult to encounter our test environment encountered, the purpose is so that we can better understand the characteristics of a GPS receiver, a signal if you encounter a serious problem of the machine, take a look Our test results if the product problem we still have to resolve as soon as possible.
Water appears and automotive glass are transparent substance, but for the GPS signal is fatal, in general, we can get the pool test results, a complete ephemeris for GPS into water depth of about 2 cm so, when, GPS signal will be completely blocked.
Hint:
Although the body of water when the GPS signal is fatal, but even in case heavy rain, car GPS navigator can still receive the signal, as long as the water body itself does not form a closed environment on the GPS, GPS signal can still be transmitted. In particular weather, such as in the case cloudy, some effect, but will not affect the normal use of GPS.
So often traveling in the buildings in the middle of the users, will be more concerned about the buildings and under the overpass, car GPS navigation signals will not be seriously affected. Then we actually look. Even if a high density of buildings, but still there will be some empty buildings, so long as these gaps sufficiently open, car GPS navigation signals can be maintained in the range of use. But through a long tunnel, or when parked under the overpass, will car GPS navigation signal has been affected. Dong particular relatively small, visible sides of the bridge opening when the low elevation are the equivalent to GPS into a concrete building enclosed space, the signal naturally weakened.
A simple way to be able to confirm that the above problem, we only need to bring car GPS navigator underground parking garage, soon although not yet completely into the ground, but has been unable to receive GPS signals, and can be seen at this time relatively small field of view to the sky, GPS signal will be completely lost.
Hint:
In the process we use, because the car GPS navigation receiver chip itself Luggage can be stored temporarily, so the next time you use it you can quickly receive the signal, just stop using the time is not long, it can in the car out of the basement The instant recovery signal.
You might be ignored when our car parked in the vicinity when the bus, car GPS navigation signals will instantly lose several satellites signal when traveling out when it will resume. This is our car GPS navigation systems in use should pay attention to the problem of time, all kinds of metal material will block the car GPS navigation signals.
Between the two vehicles after a period of time, GPS signals will be weakened, if all around the metal shield will be more obvious, but it will come up after recovery. So if we choose the car's glass metal film, then, will directly block GPS signal reception, the phone signal is also affected, so the choice of film material when there should be some attention.
Hint:
Use an external GPS antenna can solve this problem, but be aware that if your vehicle presence foil affect GPS receiver problem, then you buy car GPS navigator buy time to pay attention to those with an antenna interface navigator, currently products on the market are not reserved for each section are such an interface.
In fact, we have been tested before, on the plane, we can very well received GPS signal; Expo exhibition hall with a steel frame some of the walls with environmentally friendly materials and recyclable materials as a temporary building in good construction can still receive GPS signals.
It also shows that the seemingly closed environment will not necessarily block the navigation signal reception, the GPS navigator object and the satellite separated from the key material is blocking the signal.
Understanding of the signal reception problems, we encountered a poor signal reception if the situation changed how to do it? Generally used in the car GPS navigation device GPS signals is very difficult to encounter no way to receive the case, but because the choice of glass different materials may be foil-car GPS navigation signals to cause shielding, then we only need to select an external antenna and an external antenna connector products with the antenna can be placed outside the car, so you can successfully solve signal bad problem.
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