Leica AR25 GNSS Choke Ring Antenna

With emerging satellite systems closely on the horizon, in the form of the European Galileo System and the
Chinese Compass (Beidou) System, a new high performance antenna is needed to encompass all Global
Navigation Satellite Systems, and further support the Leica Geosystems “future proof” philosophy.

The new Leica AR25 has been designed for all existing and currently planned signals of the GPS, GLONASS, Galileo
and Compass systems.

The way ahead
The Leica AR25 brings choke ring design to a new level to enhance the key benefits of the choke ring antenna.
Moving away from the traditional 2D choke ring design, the innovative 3D choke ring sets a new standard, whilst
building on the strong traditions of the previous design.

The AR25 uses a new ultra-wideband Dorne-Margolin element. The Dorne-Margolin antenna element design has
become the industry standard for high accuracy and performance. Antenna gain has been optimised to allow
use with most manufacturers geodetic receivers.

New standard
Choke ring antennas are known for their superior multipath rejection compared to other types of geodetic
antennas. The Leica AR25 maintains superior levels of multipath rejection and tracking expected from a choke
ring antenna, whilst setting new standards in low elevation tracking compared to traditional 2D choke ring design. Enhances in atmospheric studies and network RTK modelling demand high performance antennas that can track satellites as soon as they are visible, down to
the horizon and even below. Designed for a variety of applications, including reference stations, monitoring,
seismic studies, scientific and atmospheric studies, the AR25 is a robust high performance antenna, built
to stand the test of time.

• Features
• Specifications