摘要
投影层析是一种在几何上基于多角度投影实现目标与情景的像重构方法。水下散射目标具有数量众多、散射特性复杂的特点,为了有效探测到感兴趣的目标,需要重构出目标及所在情景高可靠分辨的像。因此,该文从逆问题求解的角度出发,分析了实现投影层析方法的物理条件及数学原理;并提出了一种水下目标投影层析成像的可行性方法及实现流程;通过在不同的扫描角度范围下的仿真进一步验证了投影层析方法对指定区域反射性目标探测的可行性。
Projection tomography is a kind of target and scence image reconstruction method based on multi angle projection in geometry. The underwater scattering target has the characteristics of large quantity and complex scattering characteristics. The problem of effectively detecting the interested target can be solved by reconstructing the high relia- ble and high resolution images of target and the scence. Therefore, this paper analyzes the physical conditions and the mathematical principle of the method of projection tomography, and proposes a feasible method and the realization process of the underwater target projection tomography. The feasibility of the projection tomography method to the target detection in the specified region is verified by the simulations at different scanning angles.
出处
《声学技术》
CSCD
北大核心
2016年第4期314-318,共5页
Technical Acoustics
关键词
投影层析
像重构
逆问题
目标探测
projection tomography
image reconstruction
inverse problem
target detection
