Pointing and focusing a laser beam on a target that is rocketing skyward at thousands of miles per hour is no easy task, but the Airborne laser is uniquely able to do the job.
对于飞行速度每小时数千英里的目标进行激光束瞄准和聚焦并不容易，但机载激光器是唯一能够完成这项工作。
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A single pair of beams does not, however, produce a useful image. To do that requires scanning the object beam through the target about a hundred different ways.
不过仅利用一对光束并不能得到有用的图像，还需要从大约100个不同的角度让物体光束扫描目标。
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Digital beam-combining for stronger, clearer signals -- Target hand-off between adjacent array panels。