초록 ▼

In an optical guidance system, body fixed electronic image stabilization of television imaging is used to allow strapdown seeker guidance in a missile. Electronic image stabilization eliminates the need for a stabilized sensor or seeker platform while providing the same line-of-sight information tha

In an optical guidance system, body fixed electronic image stabilization of television imaging is used to allow strapdown seeker guidance in a missile. Electronic image stabilization eliminates the need for a stabilized sensor or seeker platform while providing the same line-of-sight information that would have been obtained from the platform. Body fixed electronic image stabilization compensates for routine vibrational and rotational motion experienced by a missile airframe during flight. This compensation is accomplished by deliberately underscanning the camera and driving the camera\s deflection coils with signals from pitch and yaw body rate sensors on the missile. The image developed on the camera detector raster is thereby moved in an equal and opposite direction to the sensed, experienced, motion during the same instant that the motion is occuring. Compensation thus stabilizes the resultant image, which would otherwise be a blur of motion on the display screen.

대표청구항 ▼

In a target tracking system wherein a television image of a target is used for guidance of a missile toward the target, a method of compensating for undesirable missile body motion and providing a stable television image output from the television camera to the missile target tracker, comprising the

In a target tracking system wherein a television image of a target is used for guidance of a missile toward the target, a method of compensating for undesirable missile body motion and providing a stable television image output from the television camera to the missile target tracker, comprising the steps of: rigidly mounting a video camera to the missile body; directing the camera lens along a field-of-view that is referred to the missile longitudinal axis; deriving a television image of a target within the field of view; sensing missile body disturbances; providing missile pitch and yaw angular velocity signals in response to said disturbances; processing said angular velocity signals; coupling said processed angular velocity signals to a television camera\s vertical and horizontal deflection coils and; moving the camera scanning raster of the television camera in the opposite direction of undesirable missile body motion for providing said stable image output to the missile target tracker.