GB2209221B - Hydrophone demodulator circuit and method - Google Patents

Hydrophone demodulator circuit and method

Info

Publication number
GB2209221B
GB2209221B GB8820545A GB8820545A GB2209221B GB 2209221 B GB2209221 B GB 2209221B GB 8820545 A GB8820545 A GB 8820545A GB 8820545 A GB8820545 A GB 8820545A GB 2209221 B GB2209221 B GB 2209221B
Authority
GB
United Kingdom
Prior art keywords
hydrophone
method
demodulator circuit
demodulator
circuit
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB8820545A
Other versions
GB2209221A (en
GB8820545D0 (en
Inventor
Michael R Layton
James S Bunn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Northrop Grumman Guidance and Electronics Co Inc
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
Priority to US9197487A priority Critical
Application filed by Northrop Grumman Guidance and Electronics Co Inc filed Critical Northrop Grumman Guidance and Electronics Co Inc
Publication of GB8820545D0 publication Critical patent/GB8820545D0/en
Publication of GB2209221A publication Critical patent/GB2209221A/en
Application granted granted Critical
Publication of GB2209221B publication Critical patent/GB2209221B/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
GB8820545A 1987-09-01 1988-08-31 Hydrophone demodulator circuit and method Expired - Fee Related GB2209221B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US9197487A true 1987-09-01 1987-09-01

Publications (3)

Publication Number Publication Date
GB8820545D0 GB8820545D0 (en) 1988-09-28
GB2209221A GB2209221A (en) 1989-05-04
GB2209221B true GB2209221B (en) 1991-10-23

Family

ID=22230578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8820545A Expired - Fee Related GB2209221B (en) 1987-09-01 1988-08-31 Hydrophone demodulator circuit and method

Country Status (2)

Country Link
CA (1) CA1339426C (en)
GB (1) GB2209221B (en)

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US5452086A (en) * 1993-03-22 1995-09-19 Litton Systems, Inc. Interferometer amplitude modulation reduction circuit
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GB2184237A (en) * 1985-10-21 1987-06-17 Plessey Co Plc Acoustic wave sensing systems
GB2184231A (en) * 1985-12-02 1987-06-17 Exxon Production Research Co Fiber optic data gathering system

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GB2209221A (en) 1989-05-04
GB8820545D0 (en) 1988-09-28
CA1339426C (en) 1997-09-02

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