Method and apparatus for determining ship position in a television image
First Claim
1. A shipboard installation for detecting the position of a vessel in a broadcast television image of the radar scan of a radar monitored area, comprising the combination of:
- (a) a television monitor for displaying to a navigator a broadcast television image of the radar scan of the radar monitored area;
(b) a controllable radar reflector to vary the reflection of the radar waves impinging thereon from a monitoring radar installation; and
(c) control means for said radar reflector operable by the navigator to produce an identifiable signal component in a broadcast image of the radar scan received on said television monitorwhereby said controllable reflector may be actuated by the navigator to vary the reflection of the radar waves and produce variations in the broadcast image to enable the navigator to identify the position of the vessel in the radar scan image appearing on said monitor.
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Accused Products
Abstract
Apparatus for detecting the position of a vessel in a broadcast image of the radar scan in a radar monitored area includes a television monitor for displaying a broadcast image of a radar scan of the area, and a controllable reflector for varying reflection of the radar waves impinging thereon from the monitoring radar to produce identifiable signal components in the broadcast image of the radar scan received on the television monitor. This controllable reflector may be actuated by the vessel operator to vary the reflection of the radar waves and produce variations in the broadcast image to enable the operator to identify the position of the vessel in the radar scan image appearing on the monitor. The monitoring installation includes a monitoring radar transmitter/receiver, and a television transmitter televising an image of the radar scan. Desirably, it includes a scan converter which receives the signals in polar coordinate form and provides rectangular raster signals with X and Y coordinates.
47 Citations
25 Claims
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1. A shipboard installation for detecting the position of a vessel in a broadcast television image of the radar scan of a radar monitored area, comprising the combination of:
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(a) a television monitor for displaying to a navigator a broadcast television image of the radar scan of the radar monitored area; (b) a controllable radar reflector to vary the reflection of the radar waves impinging thereon from a monitoring radar installation; and (c) control means for said radar reflector operable by the navigator to produce an identifiable signal component in a broadcast image of the radar scan received on said television monitor whereby said controllable reflector may be actuated by the navigator to vary the reflection of the radar waves and produce variations in the broadcast image to enable the navigator to identify the position of the vessel in the radar scan image appearing on said monitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radar monitoring assembly enabling vessels to determine their position within a radar monitored area comprising:
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(a) a radar monitoring installation including (i) a radar monitoring transmitter/receiver scanning an area to be monitored and providing an image of the radar scan of the area being monitored; (ii) a television transmitter for televising said image of the radar scan; and (b) a shipboard installation including (i) a television monitor for displaying to a navigator the televised image of the radar scan; (ii) a controllable radar reflector to vary the reflection of the radar waves impinging thereon from said monitoring transmitter/receiver; and (iii) control means for said radar reflector operable by the navigator to produce an identifiable signal component in said radar scan and said televised image thereof received on said television monitor, whereby said controllable reflector may be actuated to vary the reflection of the radar waves and produce variations in the broadcast image to enable the navigator to identify the position of the vessel in the radar scan image appearing on said monitor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A shipboard installation for detecting the position of a vessel in the radar scan image of a radar monitored area, the combination comprising:
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(a) a radar monitor for displaying to a navigator an image of a radar scan of the radar monitored area; (b) a controllable radar reflector adapted to be mounted upon a vessel and including electronic means which may be actuated to vary the reflection of the radar waves impinging thereon from the radar monitoring installation; and (c) control means for said radar reflector operable by the navigator to activate said electronic means and produce an identifiable signal component in the image of the radar scan received on said radar monitor, whereby such controllable reflector may be actuated by the navigator to vary the reflection of the radar waves and produce variations in the radar scan image to enable identification of the position of the vessel in the radar scan image appearing on said radar monitor. - View Dependent Claims (22, 23, 24, 25)
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Specification