基于压缩传感的红外或毫米波无源高分辨率成像

High-resolution Infrared or Millimeter Wave Imaging Based on Compressed Sensing

设计了一种基于压缩传感理论的红外或毫米波无源成像系统。压缩传感是一种利用稀疏或可压缩的先验信息进行信号获取和重建的技术,它能以远低于奈奎斯特采样率的速率对信号进行采样,并可实现高精度的重建。针对传统系统的固有缺点设计的上述毫米波无源成像系统,能在压缩传感理论的指导下进行成像。仿真结果表明,该系统具有良好的成像性能,提高了峰值信噪比,改善了分辨率,并大大压缩了数据存储量。

An passive infrared or millimeter wave imaging system based on the theory of compressed sensing is designed.Compressed sensing is a technology using sparse or compressed priority information to acquire and reconstruct signals.It can sample signals at a rate much lower than the Nyquist sampling rate and implement high precision reconstruction of the signals.The above designed system has overcome the shortcomings of the traditional systems and can conduct its imaging according to the theory of compressed sensing.The simulation result shows that the system has good imaging performance,its peak signal to noise ratio and resolution are improved and the data required to be stored are reduced greatly.