| Presentation | 2021-10-07 A potential cause of pulsive noises in receiving BS signals Ryouichi Nishimura, Byeongpyo Jeong, Hajime Susukita, Takashi Takahashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The level of receiving BS signals is affected by various factors such as precipitation in the atmosphere and the condition of ionosphere. Another potential factor like that is an aircraft flying over the sky. Airplanes on a cruise are generally flying at approximately the altitude of the tropopause because of the atmospheric density there and the resultant fuel efficiency. We routinely recorded the level of BS signals obtained at two observation points in two locations for four weeks, and found that pulsive level changes toward both up and down occur multiple times mainly during daytime. These signals appeared in the data of one location while no such signal appear in the other location. Defined the algorithm for extracting such pulsive signals, statistics of those extracted signals are investigated. Through the careful analysis, including comparison with the actual flight schedule and the route information, it is suggested that these pulsive signals can be attributed to the interference of the direct and the reflection waves made by an aircraft passing near the propagation path of the BS signal. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Fresnel zone / Bistatic radar / Aircraft / Remote sensing / Precipitation |
| Paper # | SAT2021-46 |
| Date of Issue | 2021-09-30 (SAT) |
| Conference Information | |
| Committee | SAT |
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| Conference Date | 2021/10/7(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroyasu Ishikawa(Nihon Univ.) |
| Vice Chair | Tetsushi Ikegami(Meiji Univ.) / Takana Kaho(Shonan Inst. of Tech.) |
| Secretary | Tetsushi Ikegami(KDDI Research) / Takana Kaho(NICT) |
| Assistant | Daisuke Goto(NTT) / Yuuki Koizumi(NHK) |
| Paper Information | |
| Registration To | Technical Committee on Satellite Telecommunications |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A potential cause of pulsive noises in receiving BS signals |
| Sub Title (in English) | |
| Keyword(1) | Fresnel zone |
| Keyword(2) | Bistatic radar |
| Keyword(3) | Aircraft |
| Keyword(4) | Remote sensing |
| Keyword(5) | Precipitation |
| 1st Author's Name | Ryouichi Nishimura |
| 1st Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 2nd Author's Name | Byeongpyo Jeong |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 3rd Author's Name | Hajime Susukita |
| 3rd Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| 4th Author's Name | Takashi Takahashi |
| 4th Author's Affiliation | National Institute of Information and Communications Technology(NICT) |
| Date | 2021-10-07 |
| Paper # | SAT2021-46 |
| Volume (vol) | vol.121 |
| Number (no) | SAT-189 |
| Page | pp.pp.17-22(SAT), |
| #Pages | 6 |
| Date of Issue | 2021-09-30 (SAT) |