US3614787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal display system
Assignee: Individual
•
Filing: 1958-03-10
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Granted: 1971-10-19
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Expires: 1978-03-10
Abstract
Abstract In a pulse echo-ranging system, means for transmitting electromagnetic waves having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization, said second means for receiving second echo signals having sense of circular polarization opposite to said selected sense of circular polarization, differencing means connected to said first means and said second means for generating third signals in dependency upon the difference in magnitude of said first echo signals and said second echo signals, azimuth sweepgenerating means for generating fourth signals, pulse-timing means for generating fifth signals, means connected to said azimuth sweep-generating means and said pulse-timing means for synchronizing the start of said pulse-timing means and said azimuth sweep-generating means, mixer means, means connected between said mixer means and said differencing means for applying said third signals to said mixer means, means connected between said azimuth sweep-generating means and said mixer means for applying said fourth signals to said mixer means, range sweepgenerating means, means for applying the output of said pulsetiming means to simultaneously trigger said transmitting means and said range sweep-generating means, summing means connected to said first and second means for generating a sixth signal in dependency upon the sum of the magnitudes of said first echo signals and said second echo signals, a cathode-ray tube having beam intensity control means and beam deflection means, means for applying the output of said mixer means and said range sweepgenerating means to said beam deflection means of said cathoderay tube, plus means for applying the output of said summing means to said beam intensity control means of said cathode-ray tube. In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization opposite to said selected sense of circular polarization, means connected to said first means and said second means for providing a third signal in dependency upon the difference between the logarithm of the magnitudes of said first echo signals and said second echo signals, visual display means, including an intensity grid, connected to said last mentioned means for visually displaying said third signal in an area-type presentation, summing means for summing the magnitudes of the first echo signals and the second echo signals, and means for applying the output of said summing means to the intensity grid of the visual display means.
Inventors
- 👤 Gerald E Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:09
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S7/00; G01S7/02; G01S7/41; G01S7/414
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
266 words
In a pulse echo-ranging system, means for transmitting electromagnetic waves having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization, said second means for receiving second echo signals having sense of circular polarization opposite to said selected sense of circular polarization, differencing means connected to said first means and said second means for generating third signals in dependency upon the difference in magnitude of said first echo signals and said second echo signals, azimuth sweepgenerating means for generating fourth signals, pulse-timing means for generating fifth signals, means connected to said azimuth sweep-generating means and said pulse-timing means for synchronizing the start of said pulse-timing means and said azimuth sweep-generating means, mixer means, means connected between said azimuth sweep-generating means and said mixer means for applying said fourth signals to said mixer means, range sweep-generating means, means for applying the output of said pulse-timing means to simultaneously trigger said transmitting means and said range sweep-generating means, summing means connected to said first and second means for generating a sixth signal in dependency upon the sum of the magnitudes of said first echo signals and said second echo signals, a cathode-ray tube having been intensity control means and been deflection means, means for applying the output of said mixer means and said range sweep-generating means to said beam deflection means of said cathode-ray tube, plus means for applying the output of said summing means to said beam intensity control means of said cathode-ray tube.
Claim 2
Dependent Claim
266 words
In a pulse echo-ranging system, means for transmitting electromagnetic waves having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization, said second means for receiving second echo signals having sense of circular polarization opposite to said selected sense of circular polarization, differencing means connected to said first means and said second means for generating third signals in dependency upon the difference in magnitude of said first echo signals and said second echo signals, azimuth sweepgenerating means for generating fourth signals, pulse-timing means for generating fifth signals, means connected to said azimuth sweep-generating means and said pulse-timing means for synchronizing the start of said pulse-timing means and said azimuth sweep-generating means, mixer means, means connected between said azimuth sweep-generating means and said mixer means for applying said fourth signals to said mixer means, range sweep-generating means, means for applying the output of said pulse-timing means to simultaneously trigger said transmitting means and said range sweep-generating means, summing means connected to said first and second means for generating a sixth signal in dependency upon the sum of the magnitudes of said first echo signals and said second echo signals, a cathode-ray tube having been intensity control means and been deflection means, means for applying the output of said mixer means and said range sweep-generating means to said beam deflection means of said cathode-ray tube, plus means for applying the output of said summing means to said beam intensity control means of said cathode-ray tube.
Claim 3
Dependent Claim
147 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization opposite to said selected sense of circular polarization, means connected to said first means and said second means for providing a third signal in dependency upon the difference between the logarithm of the magnitudes of said first echo signals and said second echo signals, visual display means, including an intensity grid, connected to said last mentioned means for visually displaying said third signal in an area type presentation, summing means for summing the magnitudes of the first echo signals and the second echo signals, and means for applying the output of said summing means to the intensity grid of the visual display means.
Claim 4
Dependent Claim
147 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization opposite to said selected sense of circular polarization, means connected to said first means and said second means for providing a third signal in dependency upon the difference between the logarithm of the magnitudes of said first echo signals and said second echo signals, visual display means, including an intensity grid, connected to said last mentioned means for visually displaying said third signal in an area type presentation, summing means for summing the magnitudes of the first echo signals and the second echo signals, and means for applying the output of said summing means to the intensity grid of the visual display means.
Claim 5
Dependent Claim
21 words
The device as claimed in claim 2 wherein each of said first and second means for receiving includes logarithmic amplifier means.
Claim 6
Dependent Claim
30 words
The device as claimed in claim 2 wherein each of said first and second means for receiving includes an antenna responsive to circularly polarized wave energy of selected rotational sense.
Claim 7
Dependent Claim
45 words
The device as claimed in claim 2 wherein each of said first and second means for receiving includes an antenna responsive to circularly polarized wave energy of selected rotational sense, and a superhetrodyne receiver with at least one IF amplifier as an integral part thereof.
Claim 8
Dependent Claim
15 words
The device as claimed in claim 5 wherein said IF amplifier is a logarithmic amplifier.
Claim 9
Dependent Claim
202 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization opposite to said selected sense of circular polarization opposite to said selected sense of circular polarization, differencing means connected to said first means and said second means for generating a third signal in dependency on the difference between the magnitudes of said first echo signals and said second echo signals, a visual indicator having at least first and second orthogonally disposed been deflection systems a range sweep generator, an azimuth sweep generator, means for applying the output of said range sweep generator, means for applying the output of said range sweep generator to said first been diflection system of the visual indicator, means for mixing the third signal and the output of the azimuth sweep generator to provide a fourth signal, and means for mixing the third signal and the output of the azimuth sweep generator to provide a fourth signal, and means for applying the fourth signal to said second been deflection system of the visual indicator.
Claim 10
Dependent Claim
202 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization opposite to said selected sense of circular polarization opposite to said selected sense of circular polarization, differencing means connected to said first means and said second means for generating a third signal in dependency on the difference between the magnitudes of said first echo signals and said second echo signals, a visual indicator having at least first and second orthogonally disposed been deflection systems a range sweep generator, an azimuth sweep generator, means for applying the output of said range sweep generator, means for applying the output of said range sweep generator to said first been diflection system of the visual indicator, means for mixing the third signal and the output of the azimuth sweep generator to provide a fourth signal, and means for mixing the third signal and the output of the azimuth sweep generator to provide a fourth signal, and means for applying the fourth signal to said second been deflection system of the visual indicator.
Claim 11
Dependent Claim
126 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization opposite to said selected sense of circular polarization, differencing means connected to said first means and said second means for generating a third signal in dependency on the difference between the magnitudes of said first echo signals and said second echo signals, a visual indicator, means for providing said visual indicator with a range sweep and an azimuth sweep, and means for applying said third signal to the visual indicator to provide a visual display of the amplitudes of the third signal.
Claim 12
Dependent Claim
126 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization opposite to said selected sense of circular polarization, differencing means connected to said first means and said second means for generating a third signal in dependency on the difference between the magnitudes of said first echo signals and said second echo signals, a visual indicator, means for providing said visual indicator with a range sweep and an azimuth sweep, and means for applying said third signal to the visual indicator to provide a visual display of the amplitudes of the third signal.
Claim 13
Dependent Claim
121 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization, differencing means connected to said first means and said second means for generating a third signal in dependency on the difference in magnitude of said first echo signals and said second echo signals, means connected to said differencing means for providing a fourth signal in dependency upon any third signal which has amplitudes that vary in excess of a preselected rate, a cathode ray tube, and means for applying said fourth signal to the cathode ray tube.
Claim 14
Dependent Claim
121 words
In a pulse echo-ranging system, means for transmitting electromagnetic energy having a selected sense of circular polarization, first means for receiving first echo signals having said selected sense of circular polarization, second means for receiving second echo signals having a sense of circular polarization, differencing means connected to said first means and said second means for generating a third signal in dependency on the difference in magnitude of said first echo signals and said second echo signals, means connected to said differencing means for providing a fourth signal in dependency upon any third signal which has amplitudes that vary in excess of a preselected rate, a cathode ray tube, and means for applying said fourth signal to the cathode ray tube.
References Cited (Backward Citations)
GB750600A
Cited
US2851681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |