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基于优化的压控振荡器和低电流失配电荷泵的0.20–2.43 GHz分数分频频率合成器
邹维,任达明,邹雪城
《信息与电子工程前沿(英文)》 2021年 第22卷 第2期 页码 141-286 doi: 10.1631/FITEE.1900653
光学成像中的相位问题 Review
Guo-hai SITU, Hai-chao WANG
《信息与电子工程前沿(英文)》 2017年 第18卷 第9期 页码 1277-1287 doi: 10.1631/FITEE.1700298
结合熵、梯度、峰度特征的无参考噪声图像质量评价 Research Article
姚恒1,马奔2,邹勔2,徐栋3,4,姚劲草3,4
《信息与电子工程前沿(英文)》 2021年 第22卷 第12期 页码 1551-1684 doi: 10.1631/FITEE.2000716
基于迭代方法的联合压缩感知与相位修正多站外辐射源雷达成像算法研究 None
Jue WANG, Jun WANG
《信息与电子工程前沿(英文)》 2018年 第19卷 第4期 页码 557-568 doi: 10.1631/FITEE.1601423
珊瑚岛礁环境噪声成像 Article
夏少红, 张昌榕, 曹敬贺
《工程(英文)》 2023年 第25卷 第6期 页码 182-193 doi: 10.1016/j.eng.2021.09.022
As valuable land in the ocean, coral islands are not only important bases for making use of marine resources and protecting marine rights and interests, but also important for breakthrough research in many fields of earth science. Hence, the economical and efficient determination of the underground structure of coral islands has become significant in coral island engineering geology, but remains challenging for traditional marine geophysical prospecting and drilling methods. While ambient noise tomography with dense arrays has been widely used in continental regions, its applicability to coral islands remains undetermined. In this study, based on the data recorded by a dense array on an isolated coral island in the South China Sea, we analyzed the ambient noise characteristics and obtained a 3D subsurface structure of the coral island using ambient noise tomography. We made the following findings: ① The ambient noise frequencies can be roughly categorized into three levels: < 1, 1–5, and > 5 Hz. The spectral characteristics of the noise below 5 Hz were consistent at different stations, but there were significant differences in the characteristics of the noise above 5 Hz. ② For ambient noise frequencies below 5 Hz, cross-correlation functions with high quality could be obtained with only 24 h of waveform data. However, it was difficult to extract meaningful cross-correlation functions for ambient noise frequencies above 5 Hz. ③ The S-wave velocity in the coral island was higher toward the sea and lower toward the lagoon, which was consistent with the high degree of cementation of the outer reef flat stratum on the seaward side. ④ There were two low-velocity horizons at 25–75 and 200–300 m, which were in good agreement with the high-porosity horizons that were revealed by drilling core samples, reflecting the weathering history of the reef. Our research demonstrates that ambient noise tomography is a potentially economical, efficient, and environmentally friendly method for the geological prospecting of coral reefs.
关键词: Coral island Ambient noise tomography Engineering geology South China Sea
基于二维非周期相位调制的步进线性调频成像雷达干扰方法 Research Article
吴其华,赵锋,赵铁华,刘晓斌,王俊杰,肖顺平
《信息与电子工程前沿(英文)》 2023年 第24卷 第3期 页码 433-446 doi: 10.1631/FITEE.2200298
基于电感和变压器跨导提升技术、噪声系数为3.2 dB、带宽为9.8–30.1 GHz的CMOS低噪声放大器
陈宏尘1,朱浩慎1,吴亮2,车文荃1,薛泉1
《信息与电子工程前沿(英文)》 2021年 第22卷 第4期 页码 586-598 doi: 10.1631/FITEE.2000510
考虑输入噪声的混合调制拉格朗日明确时延估计改进算法 Article
Wei XIA,Ju-lei ZHU,Wen-ying JIANG,Ling-feng ZHU
《信息与电子工程前沿(英文)》 2016年 第17卷 第10期 页码 1067-1073 doi: 10.1631/FITEE.1500417
在光纤激光器中利用Ti3C2 MXene材料产生矢量孤子和类噪声脉冲 Research
王帅1,李雷1,宋宇峰2,唐定远3,沈德元1,赵鹭明1,4
《信息与电子工程前沿(英文)》 2021年 第22卷 第3期 页码 287-436 doi: 10.1631/FITEE.2000033
孙暐,吴镇扬
《中国工程科学》 2006年 第8卷 第3期 页码 31-34
根据人耳听觉特性,提出新的同步多带最大似然线性回归算法用于噪声环境下语音识别。该算法采用最大似然作为参数估计准则,利用各频带信号同步感知和噪声污染假定的方法进行语音模型补偿,有效地提高了识别系统在噪声环境下的识别性能。
无次要路径主动噪声控制系统的生物启发式与内点混合法 None
Muhammad Asif Zahoor RAJA, Muhammad Saeed ASLAM, Naveed Ishtiaq CHAUDHARY, Wasim Ullah KHAN
《信息与电子工程前沿(英文)》 2018年 第19卷 第2期 页码 246-259 doi: 10.1631/FITEE.1601028
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