| 摘要 |
1291742 Pulse radar HUGHES AIRCRAFT CO 8 May 1970 [11 Aug 1969] 22359/70 Heading H4D The subject matter is wholly contained in Specification 1,291,741 but the claims relate to an acquisition track apparatus comprising means for controlling the position of a movable reflector directing incident optical energy on to a rotatable scanning device for directing the energy over an array of detectors wherein the scanning device is rotated over a smaller field of view when tracking than when acquiring a target and means causing the apparatus to track only when said energy is directed over an area adjacent the centre of the larger field of view. |
