发明名称 |
Robust infrared countermeasure system and method |
摘要 |
A system and method for focusing electromagnetic energy on a moving target. Generally, the inventive system sends a pilot beam to a target and analyzes a return wavefront to ascertain data with respect to any distortions and other phase and/or amplitude information in the wavefront. This information is then used to pre-distort an output beam by so that it is focused on the target by the intervening distortions. In an illustrative embodiment, the pilot beam is provided by a beacon laser mounted off-axis with respect to the output beam. The reflected wavefront is received through a gimbaled telescope. Energy received by the telescope is detected and processed to ascertain wavefront aberrations therein. This data is used to predistort a deformable mirror to create an output beam which is the phase conjugate of the received wavefront. In a first alternative embodiment, a nonlinear optical phase-conjugate mirror is employed to generate the required wavefront-reversed replica of the received wavefront. The system further includes an arrangement for modulating the output beam to confuse the target. In a second alternative embodiment, the system is adapted to examine atmospheric distortions of starlight to predistort the output beam. The alternative embodiment offers a faster response time and a lower susceptibility to detection.
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申请公布号 |
US2002153497(A1) |
申请公布日期 |
2002.10.24 |
申请号 |
US20010837733 |
申请日期 |
2001.04.18 |
申请人 |
PEPPER DAVID M.;JONES DENNIS C. |
发明人 |
PEPPER DAVID M.;JONES DENNIS C. |
分类号 |
G01S7/481;G01S7/495;(IPC1-7):G01J1/00 |
主分类号 |
G01S7/481 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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