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US 5,317,582 AGranted
System for detecting modulated laser signals
AssigneeHughes Aircraft Company
InventorEdward T. Siebert
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Abstract
A system (10, 80) for detecting modulating laser signals having a memory (28) for storing the occurrences of a plurality of different pulse intervals in accordance with at least one preselected characteristic of the different pulse intervals and outputting a signal when a weighted sum of the number of different pulse intervals counted exceeds a preselected threshold number.
Claims22
A system for detecting modulated laser signals, said system comprising:
- means for detecting a laser signal;
- means for determining pulse intervals;
- means for counting the occurrences of a plurality of different pulse intervals;
- means for storing said counted occurrences;
- means for processing said stored counted occurrences and determining a weighted sum of said number of different pulse intervals;
- and
- means for outputting a signal when said weighted sum of said number of different pulse intervals counted for said different pulse intervals exceeds a preselected threshold number such that a modulated laser signal is detected.
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Dependencies are inferred from the claim text.