US5175552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optimum matched illumination-reception radar
Assignee: Grumman Corp
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Filing: 1991-06-18
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Granted: 1992-12-29
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Expires: 2011-06-18
Abstract
Abstract The signal-to-noise ratio of a received radar echo is maximized by maximizing the received energy E of the echo. The energy E is maximized when the transmitted waveform s(t) is chosen so that ##EQU1## is maximized, where y(t) is the echo signal echoing from the target.
Inventors
- 👤 Philip G. Grieve
- 👤 Joseph R. Guerci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:41
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S7/00; G01S7/02; G01S7/41; G01S7/411; G01S7/412
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
A system for detecting a target by transmitting a radar signal s(t) towards the target and receiving a radar echo signal r(t) from the target, comprising: transmitter means for transmitting an illumination waveform s(t) towards said target responsive to a transmit signal; receiver means for receiving an echo signal r(t) from said target; and means for maximizing a signal-to-noise ratio of an output of said receiver means by phase and amplitude modulating the illumination waveform s(t) according to the equation ##EQU8## where μ is the eigenvalue of the integral equation, τ is a dummy variable of integration representing the time over which s(t) interacts with the target, T is the arbitrary duration of the transmitted pulse, y(t,τ) is the kernel of the equation given by the equation ##EQU9## where h 1 (t) is the impulse response of the target, and T i →T f is the observation duration which is arbitrary.
Claim 2
Independent Claim
151 words
A system for detecting a target by transmitting a radar signal s(t) towards the target and receiving a radar echo signal r(t) from the target, comprising: transmitter means for transmitting an illumination waveform s(t) towards said target responsive to a transmit signal; receiver means for receiving an echo signal r(t) from said target; and means for maximizing a signal-to-noise ratio of an output of said receiver means by phase and amplitude modulating the illumination waveform s(t) according to the equation ##EQU8## where μ is the eigenvalue of the integral equation, τ is a dummy variable of integration representing the time over which s(t) interacts with the target, T is the arbitrary duration of the transmitted pulse, y(t,τ) is the kernel of the equation given by the equation ##EQU9## where h 1 (t) is the impulse response of the target, and T i →T f is the observation duration which is arbitrary.
Claim 3
Dependent Claim
13 words
A system for detecting a target as claimed in claim 1, wherein ##EQU10##
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-29 | 1996-06-29 | 1996-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-29 | 2000-06-29 | 2000-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-29 | 2004-06-29 | 2004-12-29 | $7700.00 | Window Closed / Lapsed |