Topcu, Onur and Henniger, Hennes and Grobe, Liane and Haardt, Martin and Mitschele-Thiel, Andreas and Simon, Tobias (2011) Lightweight, mobile free-space optical communications in disaster scenarios for transmission of Earth observation data: feasibility study. In: Proceedings of SPIE, 8162. SPIE Press. Free-Space and Atmospheric Laser Communications XI, San Diego, USA.
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Free-space optical (FSO) links are an effective alternative to radio frequency (RF) to handle high-rate data transmission in case of a general communication service failure in disaster scenarios. Establishing high data rate links under the impacts of extreme environmental conditions, like the unregulated RF spectrum, is a very challenging issue. This paper focuses on multicopter (e.g., quadrocopter or hexacopter) based earth observation systems. Its main objective is to show that FSO communication can provide a high-rate link for transmitting earth observation data from a multicopter to a ground station, even under environmental disaster conditions. Before analyzing the feasibility of such an optical multicopter system, the main system structure will be discussed in detail. Several system designs will be compared and evaluated based on link budget calculations. In this process, a novel Grating Light Valve (GLV) retroreflector modulator technology will be introduced in this work. The study will emphasize that a reliable 100 Mbit/s FSO data transmission will be feasible to provide a downlink capacity for multicopter based earth observation systems.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Lightweight, mobile free-space optical communications in disaster scenarios for transmission of Earth observation data: feasibility study|
|Journal or Publication Title:||Proceedings of SPIE|
|In ISI Web of Science:||No|
|Keywords:||free-space optics (FSO), retroreflector, multicopter, quadrocopter, multiple quantum well (MQW) modulator, grating light valve (GLV) technology|
|Event Title:||Free-Space and Atmospheric Laser Communications XI|
|Event Location:||San Diego, USA|
|Event Type:||international Conference|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||Earth Observation|
|DLR - Research area:||Raumfahrt|
|DLR - Program:||R EO - Erdbeobachtung|
|DLR - Research theme (Project):||["eprint_fieldopt_dlr_project_search_R015" not defined]|
|Institutes and Institutions:||German Remote Sensing Data Center > International Ground Segment|
|Deposited By:||Hennes Henniger|
|Deposited On:||31 Jan 2012 15:35|
|Last Modified:||31 Jan 2012 15:35|
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