Compressed sensing theory based pipeline radial sound mode detection system and method

The invention discloses a compressed sensing theory based pipeline radial sound mode detection system and method. According to the invention, N sensor arrangement positions are uniformly arranged on aradius of a measurement section along the pipeline in the radial direction. H positions are selected randomly from the N sensor arrangement positions and sensors are arranged in the H positions. Themethod provided by the invention breaks through limits of the Shannon-Nyquist sampling principle and reduces a large-scale sensor array required before to an acceptable number range under the premiseof realizing the aim of extracting radial mode amplitude value accurately. Compared with a traditional detection method, the method provided by the invention reduces complexity in hardware arrangementand cost in data collection, storage and processing, and is simple in process and easy to implement. 本发明公开了种基于压缩感知理论的管道径向声模态检测系统及方法。本发明在测量截面的个半径上，沿管道径向均匀设置N个传感器布置位置；从N个传感器布置位置中随机选择H个位置分别布置传感器；基于压缩感知理论的管道径向声模态检测方法突破了Shannon-Nyqu