Takayama Yoshihisa

教授
学位：博士（工学）

基本情報

所属

Undergraduate School of Information and Telecommunication Engineering / Department of Information and Telecommunication Engineering
Undergraduate School of Information and Telecommunication Engineering / Department of Communication and Network Engineering
Graduate School of Science and Technology / Course of Science and Technology
Graduate School of Information and Telecommunication Engineering / Course of Information and Telecommunication Engineering

ジャンル

Space Development
Physics

研究と関連するSDGs

詳細情報

研究キーワード

hologram
free-space optical communications

研究分野

Manufacturing technology (mechanical, electrical/electronic, chemical engineering) Communication and network engineering Free space optical communications

論文

Research on Optical Site Diversity for Space Communications over Asia-Pacific Region

Acceptable Angular Range of Beam Pointing in Free-Space Optical Communications

Reduction of atmospheric turbulence using optical duplicate system in free-space optical communications

Optical link stabilization by controlling focus of received beam in mini-unmanned aerial vehicle-to-ground free-space optical communications

Manipulation of received beam for free-space optical communications of intermediate distance

A simple improved method using dual boresight cameras in verifying propagation direction of laser beam transmitted from ground to satellite

Fiber coupling characteristics of holographic optical element for free-space optical communications

Free-space optical wiretap channel and experimental secret key agreement in 7.8 km terrestrial link

Medium-range propagation experiment using optical duplicate system

Confirmation of propagation direction of uplink beam in ground-to-satellite laser transmission

Coupling efficiency of laser beam to multimode fiber for free space optical communication

A proposition of holographic reception in free-space optical communications

Controlling laser beam irradiation area using an optical duplicate system to improve satellite-ground laser communications

Free-space optical channel estimation for physical layer security

A proposal of beaconless low earth orbit satellite to ground laser communication system by using GPS information

The NICT’s new OGS for satellite laser communication and SOTA/SOCRATES experiment

OPTICAL DUPLICATE SYSTEM FOR SATELLITE-GROUND LASER COMMUNICATION: REDUCTION OF THE EFFECTS OF ATMOSPHERIC TURBULENCE AND SIMPLIFICATION OF THE OPTICAL GROUND STATION

Compact optical duplicate system for satellite-ground laser communications: application of averaging effects

Background light reduction method with a double phase conjugate mirror and a phase plate for optical inter-satellite communications