| 摘要 |
A method of stopping out interfering radiators in a device for optically viewing the radiation produced by a missile through a lens aperture and for steering the missile as a result of the radiation viewed, comprising setting the opening of the lens aperture in a wide opening position during the launch of the missile and viewing the radiation through the opening set, determining the off position of the missile relative to the optical axis of the device by means of a modulator disc disposed in the image plane of the device and a radiation detector which is disposed behind the image plane on which the image of the entrance pupil of the device is formed and, after the off position is determined, reducing the image field of the lens of the device to an image area immediately surrounding the missile. The device for carrying out the method advantageously includes an aperture stop which is disposed in the image plane of the device for optically steering the missile which includes an aperture or an aperture stop within the image plane which is adjustable. The detector is arranged in the image plane and it gives a signal to an evaluator unit which also receives a reference signal which is separately generated to the desired amount and fed into the evaluation unit. The evaluation unit in turn issues a signal which may be used for a steering control as well as a control for operating an actuator for adjusting the lens system or opening.
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