When precision matters.

Survey

High accuracy survey positioning employs two different techniques. The most common survey technique is Real-Time Kinematic (RTK), where a base station (located at a know point) transmits station position and observations to a rover that then estimates its position relative to the base station. Precise Point Positioning (PPP) is an absolute positioning technique where the user/rover receives a correction stream and estimates the survey objects position.

RTK and PPP has evolved from using only GPS observations to now using: GLONASS, Galileo, BeiDou and QZSS data. The addition of the more recent constellations has increased the number of satellites observed from 10 to as many as 30-40. New constellations also broadcast measurement signals at new frequencies.

GNSS survey antennas now must support all constellations and signals. Tallysman offers a broad range of economical high performance antennas multi constellation and multiband antennas, employing its Accutenna®, VeroStarTM and VeraPhase® technologies.

Tallysman’s antennas provide: