l。 Introduction o Probing a medium using waves to detect and image targets is useful in Medical applications nondestructive testing, mine detection, target detection… 气枪 检波器 防科学时太季 A Direct Numerical Imaging Method National University of Defense TechnologyA Direct Numerical Imaging Method 3 1. Introduction ❖ Probing a medium using waves to detect and image targets is useful in ◆ Medical applications, nondestructive testing, mine detection, target detection …