期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
存在障碍物影响的多AUV间距离量测识别与平滑算法
1
作者 马朋 张福斌 +1 位作者 刘书强 徐德民 《西北工业大学学报》 EI CAS CSCD 北大核心 2017年第4期643-647,共5页
相互间距离量测信息是多AUV协同定位的基础。利用朗伯W函数求解AUV间的RSS距离估计,并通过TOA及RSS 2种距离量测结果的比较,引入一种障碍物引起的非视距(ONLOS)量测识别方法。在此识别基础上,建立了多AUV间距离量测动态变化模型,并利用K... 相互间距离量测信息是多AUV协同定位的基础。利用朗伯W函数求解AUV间的RSS距离估计,并通过TOA及RSS 2种距离量测结果的比较,引入一种障碍物引起的非视距(ONLOS)量测识别方法。在此识别基础上,建立了多AUV间距离量测动态变化模型,并利用Kalman滤波方法设计了ONLOS距离量测误差平滑算法。仿真结果表明,该算法可有效提高领航与跟随AUV间的相对距离量测估计精度,减轻ONLOS量测误差对多AUV协同定位性能的影响。 展开更多
关键词 多自主水下航行器 水下障碍物 非视距量测 朗伯w函数 量测识别 距离平滑 协同定位
在线阅读 下载PDF
The St.George's Respiratory Questionnaire in Lymphangioleiomyomatosis 被引量:1
2
作者 Kai-feng Xu LanWang Xin-lun Tian Yao-song Gui Min Peng Bai-qiang Cai Yuan-jue Zhu 《Chinese Medical Sciences Journal》 CAS CSCD 2010年第3期140-145,共6页
Objective To examine the correlation between the health-related quality of life measured by the St.George's Respiratory Questionnaire(SGRQ) and the commonly used physiological measures in lymphangioleiomyomatosis(... Objective To examine the correlation between the health-related quality of life measured by the St.George's Respiratory Questionnaire(SGRQ) and the commonly used physiological measures in lymphangioleiomyomatosis(LAM).Methods This study retrospectively analyzed the SGRQ scores and other measures(the Borg scale of breathlessness at rest,6-minute walking distance,blood oxygen levels,and pulmonary function) of patients diagnosed and confirmed with LAM.Altogether 38 patients between June 2007 and November 2009 were included.Results The mean values of the SGRQ three components(symptoms,activity,and impacts) and total scores in the LAM patients were 46.95±28.90,58.47±25.41,47.89±29.66,and 51.11±26.35,respectively.The SGRQ total or component scores were correlated well with the Borg scale of breathlessness,6-minute walking distance,partial pressure of oxygen in arterial blood,spirometry and diffusion capacity of lung.There were poor correlations between SGRQ score and residual volume or total lung capacity.In our preliminary observation,sirolimus improved the SGRQ total and three component scores and the Borg scale of breathlessness significantly after 101-200 days of treatment(n=6).Conclusions The SGRQ score in LAM is correlated well with physiological measures(Borg scale of breathlessness,6-minute walking distance,blood oxygen levels,and pulmonary function tests).The SGRQ could therefore be recommended in baseline and follow-up evaluation of patients with LAM.Treatment with sirolimus,an inhibitor of mammalian target of rapamycin,may improve the quality of life and patient's perception of breathlessness in LAM. 展开更多
关键词 LYMPHANGIOLEIOMYOMATOSIS St. George's Respiratory Questionnaire pulmonary function quality of life SIROLIMUS
在线阅读 下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部