IT1143348B - Station watch alarm system - Google Patents

Station watch alarm system

Info

Publication number
IT1143348B
IT1143348B IT67141/81A IT6714181A IT1143348B IT 1143348 B IT1143348 B IT 1143348B IT 67141/81 A IT67141/81 A IT 67141/81A IT 6714181 A IT6714181 A IT 6714181A IT 1143348 B IT1143348 B IT 1143348B
Authority
IT
Italy
Prior art keywords
signals
alarm
action
echo
taken
Prior art date
Application number
IT67141/81A
Other languages
Italian (it)
Other versions
IT8167141A0 (en
Inventor
Lawrence F Anderson
Original Assignee
Lawrence F Anderson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lawrence F Anderson filed Critical Lawrence F Anderson
Priority to IT67141/81A priority Critical patent/IT1143348B/en
Publication of IT8167141A0 publication Critical patent/IT8167141A0/en
Application granted granted Critical
Publication of IT1143348B publication Critical patent/IT1143348B/en

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Abstract

The watch zone of the system is established by a variable range gate and a variable azimuth gate operating upon radar signals to render an alarm circuit inoperative as long as target signals or radar echo signals are received from the watch zone. Echo width discrimination and echo verification discrimination (repetition for a predetermined number of scans) are employed to exclude spurious signals from operating the systems. By establishing a watch zone of predetermined location and extent to encompass a fixed object, any material change of physical location of a vessel carrying the present invention will cause the alarm to sound or otherwise execute an alarm so that corrective action may be taken, and, in fact, must be at least considered. The least action to be taken is the turning off of the system, if no other action is required.
IT67141/81A 1981-02-03 1981-02-03 Station watch alarm system IT1143348B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT67141/81A IT1143348B (en) 1981-02-03 1981-02-03 Station watch alarm system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67141/81A IT1143348B (en) 1981-02-03 1981-02-03 Station watch alarm system

Publications (2)

Publication Number Publication Date
IT8167141A0 IT8167141A0 (en) 1981-02-03
IT1143348B true IT1143348B (en) 1986-10-22

Family

ID=11299925

Family Applications (1)

Application Number Title Priority Date Filing Date
IT67141/81A IT1143348B (en) 1981-02-03 1981-02-03 Station watch alarm system

Country Status (1)

Country Link
IT (1) IT1143348B (en)

Also Published As

Publication number Publication date
IT8167141A0 (en) 1981-02-03

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