Patent US2650391A successfully refreshed from Google Patents.
Patent US4502052A successfully refreshed from Google Patents.
US4502052A
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Passive data acquisition and analysis system for microwave
Assignee: Avco Corp
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Filing: 1983-01-24
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Granted: 1985-02-26
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Expires: 2003-01-24
Abstract
Abstract A passive data determination system (10) for use in a traveling projectile (12) is provided including a logarithmic receiver (20) for receiving a power signal P r from a source target (14) and emitting in response thereto an output voltage signal E o which is proportional to the logarithm of P r . A clock pulse signal is provided, such as by an oscillator (22) to measure a change in output voltage ΔE o . Means such a microprocessor (28) provides a signal R which is a function of Kv·(Δt/ΔE o ), where K is equal to -2 (log e) and V is a known relative velocity between the projectile (12) and the target (14) and which indicates the range of the projectile to the target.
Inventors
- 👤 George V. Colby, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:50
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
A passive data determination system for use in a traveling projectile comprising: means for providing a signal V representing the relative velocity of said projectile to a target; means defining a logarithmic receiver for receiving a power signal P r from a source target and emitting in response thereto an output voltage signal E o which is proportional to the logarithm of P r ; means for providing a clock pulse signal to measure a change in time, Δt, required to produce a change in output voltage ΔE o ; and microprocessor means coupled to said logarithmic receiver to produce a signal proportional to ΔE o , to said clock means to produce a signal proportional to Δt, and to said velocity means to receive the signal V, all for providing a signal R which is a function of (KVΔt)/(ΔE o ), where K is equal to -2 (log e), and where R indicates the range of said projectile to said target.
Claim 2
Dependent Claim
162 words
A passive data determination system for use in a traveling projectile comprising: means for providing a signal V representing the relative velocity of said projectile to a target; means defining a logarithmic receiver for receiving a power signal P r from a source target and emitting in response thereto an output voltage signal E o which is proportional to the logarithm of P r ; means for providing a clock pulse signal to measure a change in time, Δt, required to produce a change in output voltage ΔE o ; and microprocessor means coupled to said logarithmic receiver to produce a signal proportional to ΔE o , to said clock means to produce a signal proportional to Δt, and to said velocity means to receive the signal V, all for providing a signal R which is a function of (KVΔt)/(ΔE o ), where K is equal to -2 (log e), and where R indicates the range of said projectile to said target.
Claim 3
Dependent Claim
29 words
Microprocessor means in accordance with claim 1 wherein said means for providing a signal R further provides a signal t which is a function of K (Δt)/ΔE o .
Claim 4
Dependent Claim
17 words
System in accordance with claim 1 wherein said means for providing a signal R includes a microprocessor.
Claim 5
Dependent Claim
17 words
System in accordance with claim 1 wherein said means for providing clock pulse signals includes an oscillator.
Claim 6
Dependent Claim
25 words
System in accordance with claim 1 further including a local oscillator for reducing frequency of said power signal P r received by said logarithmic receiver.
Claim 7
Dependent Claim
21 words
System in accordance with claim 1 further including means for converting said output voltage signal E o to a digital signal.
Claim 8
Dependent Claim
33 words
System in accordance with claim 1 further including means for delaying delivery of said voltage output signal to said means for providing a signal R until a previous signal R has been generated.
Claim 9
Dependent Claim
53 words
System in accordance with claim 1 further including calibration means including means for generating a test signal which is a function of measured P r /ΔE o , comparing said test signal with a predetermined P r /ΔE o and compensating said log receiver to provide the predetermined P r /ΔE o ratio.
References Cited (Backward Citations)
US3333270A
Cited
US3134104A
Cited
US3476921A
Cited
US4008470A
Cited
US3577146A
Cited
US3604003A
Cited
US3798647A
Cited
US4041494A
Cited
US4187491A
Cited
US4177465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |