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葫芦岛广播电视台点对点定向数字微波传输应用
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作者 肖永红 《数字传媒研究》 2016年第7期64-66,共3页
数字微波技术源于通讯技术,采用定向数字微波来传输广播电视信号,是一种既经济又安全的传输方式之一。它具有传输容量大,载噪比高,传输能力强,性价比高等特点。本文介绍了点对点定向数字微波信号传输难题的解决方法。
关键词 定向 点对点 小数字微波 传输 广播电视信号
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Application of Holter ECG Signal Analysis Based on Wavelet and Data Mining Technique
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作者 余辉 谢远国 +1 位作者 周仲兴 吕扬生 《Transactions of Tianjin University》 EI CAS 2004年第2期126-129,共4页
A new model based on dyadic differential wavelet was developed for detecting the R peak in Holter ECG signal according to the design of data mining. The Mallat recursive filter algorithm was introduced to calculate wa... A new model based on dyadic differential wavelet was developed for detecting the R peak in Holter ECG signal according to the design of data mining. The Mallat recursive filter algorithm was introduced to calculate wavelet and optimize the detection algorithm which is based on the equivalent filter technique. The detection algorithm has been verified by MIT arrhythmia database with a high efficiency of 99%. After optimization, the algorithm was put into clinical experiment and tested in the Air Force Hospital in Tianjin for about two months. After about 108 hearts beating test of more than 100 patients, the total efficient detection rate has reached 97%. Now this algorithm module has been applied in business software and shows perfect performance under the complex conditions such as the inversion of heart beating, the falling off of the electrodes, the excursion of base line and so on. 展开更多
关键词 WAVELET data mining signal detection ELECTROCARDIOGRAM dyadic wavelet R peak detection
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