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Why is there no Beidou or GPS signal indoors
Why is there no Beidou or GPS signal indoors?
BeiDou and GPS signals are transmitted by satellites in space, and together with GLONASS, GALILEO and other signals are collectively referred to as GNSS satellite signals.
GNSS satellite signals are low-powered, and by the time they propagate from space to the Earth's surface, the signals have already weakened considerably.
Signals cannot penetrate concrete buildings built of reinforced concrete, so satellite signals such as Beidou and GPS are not available indoors.
Environments such as mobile phone production lines, laboratories, and university labs generally require testing of GNSS modules to be done indoors. Without BeiDou GPS satellite signals indoors, testing, performance verification, etc. of this type of product cannot be completed.
However, the GPS Beidou signal forwarding system can be built indoors, and the outdoor full-band navigation satellite signals will be led to the indoor or other satellite signals can not reach the place, and the test work that should be done outdoors can be completed indoors as well as solving the GPS Beidou timing problem.
GPS and Beidou Repeater Kits system connection diagram:
Installation steps：
1.Receiving antenna S440 mounted on the roof；
2.Cable assembly RG8 fixed along the out wall, one terminator connects S440,the another to protector at the appropriate place. In some special environment, select PE or PVC material plastic pipe to protect the cable assembly is quite sensible;
3.Lightning arrester and amplifier fixed on the wall or on the table ;
4.Cable assembly XHY240 is fixed along the ceiling of the operating place;
5.Antenna GRA10 be fixed on the ceilling .
Solve the problem of indoor BeiDou GPS signal coverage, according to the field application environment, GEMS can configure corresponding solutions to meet the application requirements.
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Amy Wu /Sales Manager
Nancy Liang/Sales
ZHENG, GUOHUI/Technical support