Signal repeater for GNSS navigation product development/production

The GNSS signal repeater host receives the antenna and locks the sky satellite downlink signal. Satellite signals from outdoor to indoor or other places not receive satellite signals, it can be used in GNSS navigation product development/production, compatible with function of GNSS intelligent terminal development/production, GNSS lab, scientific research institutions, such as need testing GNSS signals or use scenarios, using the satellite signal as a device for positioning and timing.Work that should be done outdoors can be done indoors.