针对电力线信道噪声干扰大、噪声建模复杂、重建无噪信号样本困难等问题,提出了一种面向一维时间序列的Noise2Noise神经网络优化模型,并验证分析Noise2Noise算法抑制电力线噪声的可行性。首先,分析了Noise2Noise算法的原理,对该算法原...针对电力线信道噪声干扰大、噪声建模复杂、重建无噪信号样本困难等问题,提出了一种面向一维时间序列的Noise2Noise神经网络优化模型,并验证分析Noise2Noise算法抑制电力线噪声的可行性。首先,分析了Noise2Noise算法的原理,对该算法原理进行了理论推导。其次,通过选取合适的网络结构,改进网络输入输出,使神经网络适合处理实验数据,并采用正弦波数据进行网络测试与模型验证。然后,通过搭建正交频分复用(orthogonal frequency division multi-plexing,OFDM)调制模型,产生OFDM符号,并添加特定噪声,形成带噪样本。最后,基于改进的网络结构实现了对电力线接收信号的OFDM前导序列进行带噪样本测试,增强了Noise2Noise方法的可行性与有效性,具有较好的实用性。展开更多
The gas enrichment conditions in the Fuxin basin are compared to those of the Powder River basin.The coal bed depth,the gas content,the individual coal bed layer thickness,and the overall structure thickness of the Po...The gas enrichment conditions in the Fuxin basin are compared to those of the Powder River basin.The coal bed depth,the gas content,the individual coal bed layer thickness,and the overall structure thickness of the Powder River basin in the U.S.were examined.The main factors affecting gas enrichment were examined.These factors include the coal-forming environment,the gas sources,the geological structure,the presence of magmatic activity,and the local hydrology.The coal-bed gas enrichment area in the Wangying-Liujia block of the Fuxin basin is then discussed by analogy.A hydrodynamic-force/dike-plugging model based on a magma fractured bed is proposed to explain the gas enrichment in this part of the Fuxin basin.High gas production is predicted in areas having similar conditions.This work will aid future coal-bed gas exploration and development.展开更多
文摘针对电力线信道噪声干扰大、噪声建模复杂、重建无噪信号样本困难等问题,提出了一种面向一维时间序列的Noise2Noise神经网络优化模型,并验证分析Noise2Noise算法抑制电力线噪声的可行性。首先,分析了Noise2Noise算法的原理,对该算法原理进行了理论推导。其次,通过选取合适的网络结构,改进网络输入输出,使神经网络适合处理实验数据,并采用正弦波数据进行网络测试与模型验证。然后,通过搭建正交频分复用(orthogonal frequency division multi-plexing,OFDM)调制模型,产生OFDM符号,并添加特定噪声,形成带噪样本。最后,基于改进的网络结构实现了对电力线接收信号的OFDM前导序列进行带噪样本测试,增强了Noise2Noise方法的可行性与有效性,具有较好的实用性。
基金supported by the National Science and Tech-nology Major Project(No.2008ZX05033)the National Basic Research Program of China(No.2009CB219601)
文摘The gas enrichment conditions in the Fuxin basin are compared to those of the Powder River basin.The coal bed depth,the gas content,the individual coal bed layer thickness,and the overall structure thickness of the Powder River basin in the U.S.were examined.The main factors affecting gas enrichment were examined.These factors include the coal-forming environment,the gas sources,the geological structure,the presence of magmatic activity,and the local hydrology.The coal-bed gas enrichment area in the Wangying-Liujia block of the Fuxin basin is then discussed by analogy.A hydrodynamic-force/dike-plugging model based on a magma fractured bed is proposed to explain the gas enrichment in this part of the Fuxin basin.High gas production is predicted in areas having similar conditions.This work will aid future coal-bed gas exploration and development.
