Orbit Communication Systems Ltd

Orbit Communication Ltd.

Michael Greenspan

Guy Naym

Hanan Keren

Idan Fogel

Stav Gizunterman

Azriel Yakubovitch

Shlomo Levi

Miron Voin

Ervin Rozman

Moshe Gvili

Or Dadush

Benny Ben Rey

Azriel Yakubovich

Control of dual (two) antennas, for satellite communications (satcom) with satellites in one or more constellations in Low Earth Orbit (LEO) and Medium Earth Orbit (MEO). The dual antennas are typically part of a ground-based antenna system, in particular using the Satrack single pedestal with split antenna design, housed efficiently under a compact radome. Features simultaneous pointing toward two separate satellites during the satellites' handover/switching periods with instantaneous transition between the satcom modems for assuring real-time, continuous data communication over a LEO/MEO satellite link. The dual (two) antennas system can also be used in a 'monopulse/electronic scan' mode where a first antenna is used for tracking according to ephemeris data, while a second antenna on the same pedestal will scan for offset/compensation to the first antenna path.

Dual antenna tracking in LEO and MEO satcom

An effective marine stabilized antenna system, in terms of antenna to radome size and antenna/RF performance complies with all relevant worldwide SatCom regulations. The combination of a dual offset Gregorian antenna (DOGA) with a stabilized polarization over elevation over tilt over azimuth pedestal, and a control/stabilization algorithm, ensures antenna orientation restrictions guarantee compliance with side-lobe intensity regulations. Operating a dual offset Gregorian antenna substantially within a pre-determined antenna cut range of a 45 degree angle relative to a configuration of the antenna and a relative position of a target provides antenna performance that complies with applicable SatCom regulations, despite having to flip the antenna 90 degrees to continue tracking the satellite.

Effective marine stabilized antenna system

Growing community of inventors

Givat Haim Meuhad, Israel

Michael Greenspan