| Presentation | 2013-07-09 Stochastic Modeling of Ultra Wideband Propagation Channels within a Small Spacecraft for Replacing Onboard Data Busses with Wireless Connections Miyuki HIROSE, Atsushi TOMIKI, Tomoaki TODA, Takehiko KOBAYASHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ultra wideband (UWB) propagation was measured and characterized within spacecrafts, with a view to partly replacing onboard data buses with wireless connections. Adaptation of wireless technologies in spacecrafts could contribute to: reduction of cable weight (and launching cost as a result), more flexibility in layout of spacecraft subsystems, and reliable connections at rotary, moving, and sliding joints. However, multipath propagation in semi-closed metal enclosures, such as spacecrafts, restricts the transmission performance. To realize the above benefits, multipath propagation affecting the transmission performance must be scrutinized. Spatial distributions of UWB and narrowband propagation in frequency (from 3.1 to 10.6 GHz) and time domains were measured with a microwave vector network analyzer. While narrowband resulted in a number of dead spots (deep fading points) within the conductive enclosures, UWB yielded none. In this present paper, UWB channels within a small scientific satellite was measured and statistically analyzed, based on a modified Saleh-Valenzuela (SV) model [2], which modeled indoor UWB propagation channels. The modified SV model is based on a cluster concept of rays. The clusters, as well as the multipath components within a cluster, arrive according to Poisson processes with different rates. The received power of both the cluster and the rays within a cluster decays exponentially. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Channel modeling / ultra wideband / propagation / small spacecraft |
| Paper # | WBS2013-14 |
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| Committee | WBS |
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| Conference Date | 2013/7/2(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Wideband System(WBS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Stochastic Modeling of Ultra Wideband Propagation Channels within a Small Spacecraft for Replacing Onboard Data Busses with Wireless Connections |
| Sub Title (in English) | |
| Keyword(1) | Channel modeling |
| Keyword(2) | ultra wideband |
| Keyword(3) | propagation |
| Keyword(4) | small spacecraft |
| 1st Author's Name | Miyuki HIROSE |
| 1st Author's Affiliation | Wireless Systems Laboratory, Tokyo Denki University() |
| 2nd Author's Name | Atsushi TOMIKI |
| 2nd Author's Affiliation | Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency |
| 3rd Author's Name | Tomoaki TODA |
| 3rd Author's Affiliation | Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency |
| 4th Author's Name | Takehiko KOBAYASHI |
| 4th Author's Affiliation | Wireless Systems Laboratory, Tokyo Denki University:Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency |
| Date | 2013-07-09 |
| Paper # | WBS2013-14 |
| Volume (vol) | vol.113 |
| Number (no) | 117 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |