Video rangefinder
First Claim
1. A video range system comprising:
- a video monitor for displaying an image of the target being ranged;
means for creating split images of said target on said monitor with a selected separation;
input means for supplying a true dimension of said target; and
computing means for calculating target range from said true dimension and said selected separation of said split images.
1 Assignment
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Accused Products
Abstract
A system for determining range and orientation of distant objects such as a ship. By utilizing split imaging the observed height on a video monitor can be accurately determined despite movements of the image on the monitor. The observed ship can be visually identified and the true height determined from reference sources. A better comparison of data indicating the true height compared to observed height permits calculation of the range to the target ship. Split imaging can also be utilized to determine the observed length of the ship so that observed height and length data can be compared to the true height and length of the target ship to determine orientation of the target ship relative to the observer.
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Citations
16 Claims
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1. A video range system comprising:
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a video monitor for displaying an image of the target being ranged; means for creating split images of said target on said monitor with a selected separation; input means for supplying a true dimension of said target; and computing means for calculating target range from said true dimension and said selected separation of said split images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A video system for determining orientation of a target ship comprising:
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a video monitor for displaying an image of the target ship being observed; means for creating an electrical signal proportional to the observed length of the target ship on said video monitor; means for creating an electrical signal proportional to the observed height of the target ship on said video monitor; input means for supplying data corresponding to the true length and height dimensions of the target ship; and computer means for determining the orientation angle of the target ship relative to the observer from said data related to said true length and height dimensions and from said electrical signals proportional to the observed length and height of the target ship on said video monitor. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification