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人工衛星搭載用VHF波帯広帯域ディジタル干渉計の研究・開発

卫星用VHF宽带数字干涉仪的研制

基本信息

批准号：
11J00834
负责人：
菊池博史
金额：
$ 0.83万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2011
资助国家：
日本
起止时间：
2011 至 2012
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11J00834/
关键词：
電磁波伝搬雷放電電磁波衛星観測

项目摘要

当該年度に実施した研究の成果として以下の点を挙げる.1.衛星搭載用VHF波帯広帯域ディジタル干渉計の研究・開発2009年に既に運用を行った,衛星搭載用VHF波帯広帯域ディジタル干渉計を実現する基礎実証衛星「まいど1号」による観測結果を用いて、電離層内を広帯域電磁波が伝搬する際に生じる群遅延特性を用いた新たな到来方向推定手法の提案を行い、その結果を地上雷観測網性能評価等(World Wide Lightning Location Network)の観測データをもちいて評価した結果を論文としてまとめて投稿、採録された(IEICE TRANSACTIONS)。また,その結果に関して,発表を行った(平成24年基礎・材料・共通部門大会・電気学会).2.電磁波到来方向の補正演算アルゴリズム宇宙空間からVHF波帯電磁波放射源の到来方向を求めるために,電離層内の屈折を考慮した補正演算が必要である。具体的には,各高度に国際標準電離層モデルを用いた電子密度,衝突周波数,地球磁場を考慮した電離層モデルを作成し,高精度かつ計算コストが低い到来方向の補正演算アルゴリズムの開発を行う.このうち該当年度は,本モデルを用いた電離圏が到来方向推定に及ぼす影響を評価した.その結果,VHF帯を用いた雷放電電磁波到来方向推定手法は夜間の電離圏ではその影響はほぼ無視できることを明らかにし,昼間の電離圏は,電離層内の伝搬距離によって数十kmの補正が必要であることを示した。この結果を論文としてまとめ,電気学会A部門に投稿し、採録された(菊池等,"人工衛星によるVHF帯電磁波を用いた雷放電位置推定に対する電離圏の影響評価",電気学会誌,2013年4月掲載予定)3.JEM-GLIMS MISSION(2012)による観測データの解析また,JEM-GLIMS MISSIONにおいて,2012年11月から宇宙ステーションからの雷放電の定常観測を行っている.初期観測データから,各機器の正常動作が確認され,観測データの評価を行っている.初期観測結果について各学会にて発表を行った(第87回・第88回日本大気電気学会,AGU).

When the results of the research are reviewed in that year, the following points will be available. 1. The study of satellite VHF wave transmission in the field of satellite communication is carried out in the year 2009. The satellite is equipped with VHF waves, and the satellite is used to verify that the basic satellite, the satellite, the satellite, The results show that the results show that the mine performance test on the ground (World Wide Lightning Location Network) does not need to be completed. The results show that the contribution and contribution (IEICE TRANSACTIONS) of the article is very important. The results are satisfactory. (Pingcheng 24-year General Assembly of basic Materials General Assembly Electronics Society). 2. The direction of arrival of electromagnetic waves is calculated. It is necessary to calculate the direction of arrival of VHF waves in space, the direction of arrival of magnetic waves and the direction of arrival of radiation sources. According to the specific temperature, the density of electrons, the number of sudden waves, the magnetic field of the earth, the calculation of the arrival direction of low temperature and low temperature, the density of electron density, the number of sudden waves, and the geomagnetic field test are used to calculate the arrival direction of low temperature. In the current year, we will use the presumption of the direction of arrival of the electric power plant and the prediction of the arrival direction. According to the results of the test, the VHF system uses the method of deducing the direction of arrival of radio waves by means of lightning discharge. The video shows that there is no video in the night, and there is no TV in the daytime. The radio is isolated during the day, and dozens of km are required to verify the display. The results show that 3.JEM-GLIMS MISSION (2012), Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electronics, Department of Electrical Engineering, Department of Electrical Engineering, Department An of the Institute of Electronics, Department An of the Institute of Electrical Engineering, Department An of the Institute of Electronics, Department of Electronics In November 2012, the universe is in the middle of a steady period. In the initial stage, the normal operation of each machine is confirmed, and the operation of each machine is confirmed. The results of the initial results show that all societies are required to conduct a table review (the 87th and 88th round of the Japan Institute of Electrical Engineering, AGU).