A new method to measure the optical defocus of a passiveimagingsystem (ODPIS) is proposed.
提出了一种测量被动成像系统光学散焦的新方法。
2
Affected by strong scattering medium, the faint target in long range is difficult to detected by passiveimagingsystem.
受强散射介质的影响，被动成像系统难以探测到远距离的微弱目标。
3
Based on the principles that lateral offset-focus feed makes the antenna pattern deflect an angle, the multi-beam antenna can be used in passiveimagingsystem.