Title:
SPATIAL OPTICAL COMMUNICATION DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2018/139357
Kind Code:
A1
Abstract:
[Problem] To provide a spatial optical communication device that can transmit uplink light waves with high accuracy without the use of a laser guide star by measuring and compensating for variations in the atmosphere. [Solution] The present invention comprises: a transmission light wave generating means that generates transmission light waves that are to be transmitted to an artificial satellite 11; a telescope 20 provided with an aperture that can collect reception light waves emitted from the artificial satellite 11 and that can collect path propagation light which has propagated through space containing a propagation path of transmission light waves generated by the transmission light wave generating means and guided to the artificial satellite; a wavefront sensor 25 that detects wavefront distortion of the reception light waves and path propagation light collected by the telescope 20; a control unit 26 that generates a control signal on the basis of the wavefront distortion detected by the wavefront sensor 25; and a variable shape mirror 23 that corrects the propagation path on the basis of the control signal generated by the control unit 26 in order to guide the transmission light waves to the artificial satellite 11 via the telescope.
Inventors:
KOLEV DIMITAR (JP)
TOYOSHIMA MORIO (JP)
TOYOSHIMA MORIO (JP)
Application Number:
PCT/JP2018/001562
Publication Date:
August 02, 2018
Filing Date:
January 19, 2018
Export Citation:
Assignee:
NAT INST INF & COMM TECH (JP)
International Classes:
H04B10/118; B64G3/00; H04B10/07
Domestic Patent References:
| WO2011007658A1 | 2011-01-20 | |||
| WO2009096405A1 | 2009-08-06 |
Foreign References:
| JP2007506984A | 2007-03-22 | |||
| JP2000068934A | 2000-03-03 |
Other References:
J. HARDY: "Adaptive Optics for Astronomical Telescopes", 1998, OXFORD UNIVERSITY PRESS
See also references of EP 3576318A4
See also references of EP 3576318A4
Attorney, Agent or Firm:
ABIKO Gen (JP)
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