发明名称 |
METHOD AND APPARATUS FOR MAINTAINING A COHERENT COMBINED BEAM DURING ARBITRARY STEERING |
摘要 |
A method and apparatus for accounting for phase differences in a transmit path of an optical system is provided. A transmit control system nullifies phase errors in signals propagating from a coherent source to phase samplers and back to a transmitter sensor. A small time-dependent length modulation is applied to a feed fiber of each aperture and this modulation enables a hill-climbing servo loop to increase, or in some cases even maximize, a detected intensity. This results in a particular relationship between the phases at all the phase-sampling points. The optical system is then calibrated so that this relationship corresponds to in-phase beams when the optical system is aimed at boresight.
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申请公布号 |
US2009142073(A1) |
申请公布日期 |
2009.06.04 |
申请号 |
US20080325241 |
申请日期 |
2008.11.30 |
申请人 |
SMITH IRL W;FISHER KIRK L;KAPUSTA EVELYN W |
发明人 |
SMITH IRL W.;FISHER KIRK L.;KAPUSTA EVELYN W. |
分类号 |
H04B10/04 |
主分类号 |
H04B10/04 |
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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