著者

川瀬 徹也 鶴之園 秀志 江原 直樹 笹瀬 巌

出版者

一般社団法人電子情報通信学会

雑誌

電子情報通信学会論文誌. B-II, 通信II-無線通信・無線応用 (ISSN:09151885)

巻号頁・発行日

vol.81, no.5, pp.532-541, 1998-05-25

被引用文献数

4

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従来, フェーズアレーアンテナを用いた目標追随において, α-βフィルタが使用されている.α-βフィルタは演算負荷は軽いが, 目標の急旋回時における追随精度に問題があった.急旋回に対応する方式としては, 円予測を併用したα-βフィルタが提案されている.しかし, 円予測を併用したα-βフィルタは目標の急旋回時に, 円予測フィルタが線形予測誤差増大の影響を受け, 追随精度が劣化してしまう問題があった.本研究では追随精度の向上のため, マニューバ検出器によりゲインを変化させる円予測を併用したゲイン可変型α-βフィルタを提案する.簡単な目標モデルを用いた計算機シミュレーションにより, 追随精度および演算時間について提案方式の有効性を示す.

著者

増山 英則 嶋田 寛子 木下 次子 田尻 貞雄 今村 昌耕 高瀬 昭 江原 直 瀬倉 敬 宮下 脩 許 栄宏 中島 丈夫 山口 智道 徳地 清六

出版者

JAPANESE SOCIETY FOR TUBERCULOSIS

雑誌

結核 (ISSN:00229776)

巻号頁・発行日

vol.68, no.4, pp.301-312, 1993

被引用文献数

2

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We studied 130 cases of pulmonary tuberculosis in foreigners residing in Japan to obtain the results as follows;<BR>1. Of the cases of pulmonary tuberculosis in foreigners who are registered and receiving treatment in Japan, 20.3% were treated at three dispensaries of the Japan Anti-tuberculosis Association in Tokyo.<BR>2. The nationality of the cases treated was China in more than half of them, followed by the Republic of Korea.<BR>3. The number of days taken from entry into Japan to the start of treatment was about 11.4 months; 0.9% of the total number of cases examined by chest radiophotography required medical treatment.<BR>4. Their living conditions in Japan according to questionnairing are: 56.2% have jobs in Japan; working hour, 4.99±1.19 hours a day; 64.4% take night work; 57.6% work in food/drink service industry; living space is 12.5 m<SUP>2</SUP>; 52.4% share the same house with other persons, living together with 1.6 persons.<BR>5. As for the type of illness at the start of treatment, GAKKAI classification type III accounted for 90% and spread 1 83.8%. GAKKAI classification type II accounted for 10%, consisting of many relatively mild cases.<BR>6. The defaulter rate was high at 40.8%. The reason for defaulting was broken down to discontinuation on his own 68%, repatriation 15 % and side-effects 19%. The time to default was average 3.2±3.1 months after the start of treatment. They defaulted 1.2±0.4 times on the average.<BR>7. To reduce the defaulter rate to the minimum in treating the foreigners residing in Japan, the following may be needed.<BR>a. To give guidance on the regimen including the need of treatment and iisk associated with discontinuation of treatment at the first visit.<BR>b. Measures to reduce the amount to be born by the individual in the medical expenses.<BR>c. Preparation of a pamphlet for therapeutic guidance in foreign languages.