Antennas and Other GNSS-Related Hardware

Topcon Full Wave GNSS Reference Station Antenna with Convex Impedance Ground Plane

Topcon Full Wave GNSS Reference Station Antenna with Convex Impedance Ground Plane

An ideal antenna for a reference station receives signals from all satellites in view while fully rejecting signals coming from underneath or indirect. These indirect signals are the result of so-called multipath. They are original satellite signals reflected from the terrain underlying the antenna. These signals mix with the direct signals from the satellites thus providing what is known as multipath error to the positioning. With today’s technology, multipath is the largest error source within high precision applications. 

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