Oerlikon Contraves Ag

Contraves Space Ag

Other

Synopta Gmbh

Fischer, Edgar

Wandernoth, Bernhard

Reinhard Hanno Czichy

Edgar Fischer

Bernhard Wandernoth

Manfred Wittig

The invention relates to a hybrid communication apparatus for high-rate data transmission between moving and/or stationary platforms, comprising at least one transmission and reception device, wherein the transmission engineering used is radio-frequency engineering. The invention provides for light waves to be used for the data transmission either as an alternative or in addition. The transmission and reception devices () comprise a radio-frequency transmitter/receiver () and a multiplicity of optical transmitters/receivers () which are arranged in annular fashion around the radio-frequency transmitter/receiver ().

Hybrid communication apparatus for high-rate data transmission between moving and/or stationary platforms

The instant invention relates to a method and an arrangement for optical information transmission via satellites by means of broadband optical modulation and reception technology. As a rule, the arrangement is realized in optical satellite terminals, which have optical units, a laser unit, control and supply as well as monitoring units. In the exemplary embodiment, these terminals are designed for a data rate of 1.5 Gbit/s and a transmission distance of more than 1,200 km, while having a weight of less than 8 kg.

Method and arrangement for optical information transmission via satellites

The alignment device (10) is used for aligning an optical transmitting beam with an optical receiving beam. It comprises a rough alignment device and a fine alignment device. The rough alignment device has a first mirror (30.1), which can be rotated by approximately 360.degree. around a first axis (14), in respect to which the first mirror (30.1) is set at 45.degree. to the first axis. The rough alignment device furthermore has a second mirror (32.1), which can be rotated by approximately 180.degree. around a second axis (16), in respect to which the second mirror (32.1) is set at 45.degree.to the second axis. The second axis (16) can be rotated around the first axis (14), so that the second mirror (32.1) can be rotated within a spatial angle of approximately one hemisphere by the cumulative rotations around the axes (14, 16). The fine alignment device is constituted by a tiltable seating device (30.6 to 30.17) for at least one mirror (30.1), by means of which this mirror (30.1) is tiltably seated. The fine alignment device furthermore has an actuator device (30.18 to 30.19), by means of which the mirror (30.1) can be tilted in relation to its center normal line (15) within a spatial angle, which is considerably less than the hemisphere. At least the tiltably fastened one of the two mirrors (30.1, 32.1) is embodied with reduced mass.

Alignment device for aligning an optical transmitting beam with an

The instant invention relates to a method for establishing a satellite navigation system, using the satellite networks provided for mobile communications, below the geostationary orbit, in particular in LEO (low earth orbiting) or MEO (medium earth orbiting) constellations, as well as its connection to communications satellites in the geostationary orbit. The establishment of satellite navigation networks in accordance with the invention is made possible by means of the employment of special optical ISL (inter-satellite link) terminals with ranging functions in various LEO or MEO satellite networks, and possibly by including GEO satellite constellations.

Satellite navigation system

The instant invention relates to a method and a device and its opto-mechanical structure for the optical transmission of data over free space distances, using the principle of phase modulation of a lightwave generated by a laser and by a homodyne superimposition in a photodector of a lightwave from a second laser on the received lightwave.

Method and device for the optical transmission of data over distances in

The invention relates to a method for the transmission of a low-rate supplementary channel 24 in high-rate coherent optical transmission systems for the transmission of supplemental data 26, in particular relating to the operation, in an optical communications link, in which a user data flow 17 in the form of a phase-modulated laser lightwave is transmitted, and and wherein syncbits (synchronization bits) are scattered into the user data flow 17 by a transmitter.

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Eggersriet, Switzerland

Reinhard Hanno Czichy