GNSS / GPS Combiners and Bias-Ts


A GNSS combiner are devices designed to combine signals from multiple GNSS satellites, such as GPS (Global Positioning System), GLONASS, Galileo, and BeiDou, into a single, more robust signal. These combiners integrate signals from multiple satellite constellations, improving signal strength, reducing multipath effects, and enhancing overall positioning accuracy.

A GNSS and GPS Bias-T is also a form of combiner, however, instead of combining two GPS signals it combines a GPS signal and a direct current from a DC power source. The DC power is injected into the GPS antennas cable to power active GPS antennas while passing GPS signals to the receiver without distortion.

GPS combiners are often used in the transportation sector for applications such as vehicle navigation, aviation and maritime positioning.

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