US3839718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Range sensitive devices
Assignee: EMI Ltd
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Filing: 1954-10-19
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Granted: 1974-10-01
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Expires: 1974-10-19
Abstract
Abstract This invention relates to a radar ranging system wherein a noise signal and a sine wave signal are combined to frequency modulate the radar carrier signal. The radar system may be used in conjunction with a proximity fuze.
Inventors
- 👤 Manifold M Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/34; G01S13/341; G01S13/342; G01S13/346
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A range sensitive device comprising means for generating a periodic electrical waveform, means for generating another electrical waveform having a series of components of different frequencies and random phase relationships, means for generating a carrier oscillation modulated in frequency by said waveforms, means for radiating said frequency modulated oscillation, means for receiving oscillations reflected from an object whose range is to be determined, and means for deriving, in response to said received oscillation, an output signal representing the range of said object.
Claim 2
Dependent Claim
82 words
A range sensitive device comprising means for generating a periodic electrical waveform, means for generating another electrical waveform having a series of components of different frequencies and random phase relationships, means for generating a carrier oscillation modulated in frequency by said waveforms, means for radiating said frequency modulated oscillation, means for receiving oscillations reflected from an object whose range is to be determined, and means for deriving, in response to said received oscillation, an output signal representing the range of said object.
Claim 3
Dependent Claim
21 words
A range sensitive device as in claim 1 in which the generator of said second waveform comprises an electrical noise source.
Claim 4
Dependent Claim
82 words
A range sensitive device comprising means for generating a sinusoidal electrical waveform, means for generating another electrical waveform having a series of components of different frequencies and random phase relationships, means for generating a carrier oscillation modulated in frequency by said waveforms, means for radiating said frequency modulated oscillation, means for receiving oscillations reflected from an object whose range is to be determined, and means for deriving, in response to said received oscillation, an output signal representing the range of said object.
Claim 5
Dependent Claim
82 words
A range sensitive device comprising means for generating a sinusoidal electrical waveform, means for generating another electrical waveform having a series of components of different frequencies and random phase relationships, means for generating a carrier oscillation modulated in frequency by said waveforms, means for radiating said frequency modulated oscillation, means for receiving oscillations reflected from an object whose range is to be determined, and means for deriving, in response to said received oscillation, an output signal representing the range of said object.
Claim 6
Dependent Claim
76 words
A range sensitive device comprising means for generating a sinusoidal electrical oscillation, means for generating an electrical noise signal, means for generating a carrier oscillation modulated in frequency by said sinusoidal oscillations and said noise signal, means for radiating said frequency modulated oscillation, means for receiving oscillations reflected from an object whose range is to be determined, and means for deriving, in response to said received oscillation, an output signal representing the range of said object.
Claim 7
Dependent Claim
76 words
A range sensitive device comprising means for generating a sinusoidal electrical oscillation, means for generating an electrical noise signal, means for generating a carrier oscillation modulated in frequency by said sinusoidal oscillations and said noise signal, means for radiating said frequency modulated oscillation, means for receiving oscillations reflected from an object whose range is to be determined, and means for deriving, in response to said received oscillation, an output signal representing the range of said object.
Claim 8
Dependent Claim
25 words
A range sensitive device according to claim 4 in which the generator of said noise signal comprises an electric discharge tube and a band-pass filter.
References Cited (Backward Citations)
US2923004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |