Broadband sensor array measurements, signal processing, detection and classification of rare events

该研究方案的领域是从使用传感器阵列测量的多通道数据中提取和使用信息，包括对罕见事件的检测和分类。我们寻找的信息既包括通信信号中的信息，也包括来自雷达信号或自然信号源的环境数据。一个主要的重点是获取和解释观测数据，以发现罕见的社会效益事件以及建立有用系统的机会。背景包括亚声和音频、环境包括电离层的低无线电频率以及用于当地无线通信的较高无线电频率。*我们希望探索最初为宽带声信号开发的阵列处理算法在宽带电磁信号、成像和无线电相机算法中的应用，并探索深度学习作为提取信息的一种手段。该研究计划利用申请人在音频、无线电、信号处理、测量和使用最近收集的测量数据方面的经验。*研究计划包括几个主题：*1.在水听器数据中检测罕见事件，包括海洋哺乳动物、航运和环境声音。这项工作利用了可从有线海底观测站(如加拿大海洋网络)获得的水听器数据。*2.宽带无线电信号中的罕见事件检测，包括信号情报(SIGINT)、未经授权的传输和射电天文学来源。这项工作利用了使用模数转换器的新型超宽带软件无线电接收器，其工作频率高达10千兆赫。*3.电离层无线电传播中的罕见事件探测，包括地震和地震前信号。这项工作建立在最近收集的数据的基础上，该传感器使用电离层作为传感器来探测可能由地球扰动事件引起的电离层波。*研究计划将对加拿大在海洋声监测和保护、无线通信和雷达、无线电频谱监测、环境监测、地震探测和射电天文学方面的活动产生影响。*支持培养4名博士生、2名硕士生和5名本科生。学生将在学习算法、信号处理和射频工程方面发展理论和实践技能。这些通用的、可转移的技能是加拿大工业所需要的。

The research program is in the area of extracting and using information from multichannel data measured using sensor arrays, both acoustic (hydrophones) and electromagnetic (antennas), including detection and classification of rare events. The information we seek includes both the messages in communications signals and environmental data from radar signals or natural signal sources. A major focus is to obtain and interpret observational data to discover rare events for social benefits as well as opportunities for building useful systems. The context includes infra-sonic and audio frequencies, low radio frequencies where the environment includes the ionosphere as well as higher radio frequencies used for local wireless communications. ******We wish to explore the application of array processing algorithms originally developed for wideband acoustic signals to wideband electromagnetic signals, imaging and radio camera algorithms as well as to explore deep learning as a means to extract information. The research program takes advantage of the applicant's experience in audio, radio, signal processing, taking measurements, and using measured data recently gathered.******The research program comprises several themes: ******1. rare event detection in hydrophone data, including marine mammal, shipping and environmental sounds. This work takes advantage of the hydrophone data available from cabled undersea observatories such as Ocean Networks Canada.******2. rare event detection in broadband radio signals, including signals intelligence (SIGINT), unauthorized transmissions, and radio astronomy sources. This work takes advantage of new very wideband software-defined radio receivers using analog-to-digital converters operating up to 10 GigaHz.******3. rare event detection in ionospheric radio propagation, including earthquake and pre-earthquake signatures. This work builds upon data recently gathered using the ionosphere as a sensor to detect ionospheric waves that may be caused by earth-disturbing events.******The research program will have an impact on Canadian activities in ocean acoustic monitoring and protection, wireless communications and radar, surveillance of the radio spectrum, environmental monitoring, earthquake detection and radio astronomy. ******The research program supports the training of 4 PhD students, 2 Masters students and 5 undergraduate students. The students will develop theoretical and practical skills in learning algorithms, signal processing and radio frequency engineering. These general and transferable skills are in demand by Canadian industry.***********