Patent US4996473A successfully refreshed from Google Patents.
US4996473A
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Microburst/windshear warning system
Assignee: MARKSON RALPH J
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Filing: 1989-05-17
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Granted: 1991-02-26
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Expires: 2009-05-17
Abstract
Abstract A system for predicting the occurence of microburst/windshear comprising at least one sensor for receiving lightning produced signals, a processor for processing those received signals to produce data and generate a warning when the processed data indicates that a microburst/windshear is about to occur.
Inventors
- 👤 Ralph J. Markson
- 👤 Bruce E. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:56
CPC Classifications
G; G01; G01W; G01W1/00; G01W1/08; G01S; G01S11/00; G01S11/02; G01S5/00; G01S5/0009; G01W1/10; G01W1/16
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
115 words
A system for predicting the occurrence of microburst/windshear comprising: a. one or more sensors responsive to signals from a thunderstorm to generate sensor signals; b. one or more data processors in communication with said sensors for processing the sensor signals to produce data; c. a warning device responsive to the data produced by one or more of said data processors for warning a user that a microburst/windshear will occur within a defined number of minutes at a location defined by the data, when the data indicate that the lightning rate exceeds a first threshold value, the time rate of lightning increase exceeds a second theshold value and there is a peak in the lightning rate.
Claim 2
Independent Claim
115 words
A system for predicting the occurrence of microburst/windshear comprising: a. one or more sensors responsive to signals from a thunderstorm to generate sensor signals; b. one or more data processors in communication with said sensors for processing the sensor signals to produce data; c. a warning device responsive to the data produced by one or more of said data processors for warning a user that a microburst/windshear will occur within a defined number of minutes at a location defined by the data, when the data indicate that the lightning rate exceeds a first threshold value, the time rate of lightning increase exceeds a second theshold value and there is a peak in the lightning rate.
Claim 3
Dependent Claim
11 words
The system of claim 1 wherein the sensors measure electrostatic potential.
Claim 4
Dependent Claim
15 words
The system of claim 1 wherein the sensors detect electromagnetic radiation from the lightning discharge.
Claim 5
Dependent Claim
11 words
The system of claim 3 wherein the sensors detect VHF radiation.
Claim 6
Dependent Claim
11 words
The system of claim 3 wherein the sensors detect UHF radiation.
Claim 7
Dependent Claim
11 words
The system of claim 3 wherein the sensors detect VLF radiation
Claim 8
Dependent Claim
12 words
The system of claim 3 wherein the sensors detect visible light radiation.
Claim 9
Dependent Claim
10 words
The system of claim 1 wherein the sensors are airborne.
Claim 10
Dependent Claim
20 words
The system of claim 1 wherein the system further comprises a communications link between said sensors and said data processors.
Claim 11
Dependent Claim
16 words
The system of claim 9 wherein said communications link is part of a radar transponder system.
Claim 12
Dependent Claim
14 words
The system of claim 9 wherein the communications link is a dedicated radio channel.
Claim 13
Dependent Claim
11 words
The system of claim 1 wherein the sensors are ground based.
Claim 14
Dependent Claim
50 words
The system of claim 1 wherein the signals from said thunderstorm are processed by one of said processors in communication with said sensors to generate data prior to said data being transmitted over said communications link to another of said processors which then processes the data to generate a warning.
Claim 15
Independent Claim
211 words
A system for predicting the occurrence of microburst/windshear comprising: a. one or more sensors for receiving signals produced by lightning and generating sensor signals; b. one or more processors in communication with said sensors processors for processing said sensor signals and predicting the occurence of a microburst/windshear, said processor comprising i. a flash location device for determining the rate of lightning flashes, the change in the rate of lightning flashes and the position of the lightning flashes to define a center of activity; ii. a center of activity location device for determining the direction and speed of a center of activity as determined by the location of the lightning flashes and a wind vector associated with the thunderstorm; iii. a microburst/windshear analyzing device for predicting the occurence of a microburst/windshear by comparing the rate of lightning flashes and the change in the rate of lightning flashes with its respective threshold value, and searching for the occurence of a peak in the rate of lightning flashes; and iv. a warning device for warning a user of the impending occurence of a microburst/windshear, when the rate of lightning and the change in the lightning rate exceed its respective threshold and a peak in the lightning rate is detected within a center of activity.
Claim 16
Independent Claim
211 words
A system for predicting the occurrence of microburst/windshear comprising: a. one or more sensors for receiving signals produced by lightning and generating sensor signals; b. one or more processors in communication with said sensors processors for processing said sensor signals and predicting the occurence of a microburst/windshear, said processor comprising i. a flash location device for determining the rate of lightning flashes, the change in the rate of lightning flashes and the position of the lightning flashes to define a center of activity; ii. a center of activity location device for determining the direction and speed of a center of activity as determined by the location of the lightning flashes and a wind vector associated with the thunderstorm; iii. a microburst/windshear analyzing device for predicting the occurence of a microburst/windshear by comparing the rate of lightning flashes and the change in the rate of lightning flashes with its respective threshold value, and searching for the occurence of a peak in the rate of lightning flashes; and iv. a warning device for warning a user of the impending occurence of a microburst/windshear, when the rate of lightning and the change in the lightning rate exceed its respective threshold and a peak in the lightning rate is detected within a center of activity.
Claim 17
Independent Claim
166 words
A system for predicting the occurrence of microburst/windshear comprising: one or more sensors for receiving signals produced by lightning and generating a sensor signal; one or more processors in communication with said sensors for processing said sensor signals and predicting the occurrence of a microburst/windshear, said processor adapted to execute: i. an algorithm to determine the location of a lightning flash relative to a center of activity; ii. an algorithm to determine the location of the center of activity; iii. an algorithm to predict the direction and speed of the center of activity; iv. an algorithm to determine the rate of lightning flashes; v. an algorithm to determine the change in the rate of lightning flashes; vi. an algorithm to predict the occurence of a microburst/windshear as determined by the rate, change in rate, and aerial density of lightning flashes; and vii. an algorithm for displaying the results of the calculations of the algorithm to display the microburst/windshear warning and the predicted location of the microburst/windshear.
Claim 18
Independent Claim
166 words
A system for predicting the occurrence of microburst/windshear comprising: one or more sensors for receiving signals produced by lightning and generating a sensor signal; one or more processors in communication with said sensors for processing said sensor signals and predicting the occurrence of a microburst/windshear, said processor adapted to execute: i. an algorithm to determine the location of a lightning flash relative to a center of activity; ii. an algorithm to determine the location of the center of activity; iii. an algorithm to predict the direction and speed of the center of activity; iv. an algorithm to determine the rate of lightning flashes; v. an algorithm to determine the change in the rate of lightning flashes; vi. an algorithm to predict the occurence of a microburst/windshear as determined by the rate, change in rate, and aerial density of lightning flashes; and vii. an algorithm for displaying the results of the calculations of the algorithm to display the microburst/windshear warning and the predicted location of the microburst/windshear.
Claim 19
Independent Claim
157 words
A system for predicting the occurrence of microburst/windshear comprising: at least one for receiving signals produced by lightning and producing sensor signals; a processor incommunication with said sensor for processing said sensor signals and predicting the occurrence of a microburst/windshear, said processor comprising: i. an apparatus to determine the location of a lightning flash relative to a center of activity; ii. an apparatus to determine the location of a center of activity; iii. an apparatus to determine the direction and speed of the center of activity; iv. an apparatus to determine the rate of lightning flashes; v. an apparatus to determine the change in the rate of lightning flashes; vi. an apparatus to predict the occurence of a microburst/windshear as determined by the rate, change in rate, and position of lightning flashes; and vii. an apparatus for displaying the results of the calculations of the algorithm to display microburst/windshear warning and the predicted location of the microburst/windshear.
Claim 20
Independent Claim
157 words
A system for predicting the occurrence of microburst/windshear comprising: at least one for receiving signals produced by lightning and producing sensor signals; a processor incommunication with said sensor for processing said sensor signals and predicting the occurrence of a microburst/windshear, said processor comprising: i. an apparatus to determine the location of a lightning flash relative to a center of activity; ii. an apparatus to determine the location of a center of activity; iii. an apparatus to determine the direction and speed of the center of activity; iv. an apparatus to determine the rate of lightning flashes; v. an apparatus to determine the change in the rate of lightning flashes; vi. an apparatus to predict the occurence of a microburst/windshear as determined by the rate, change in rate, and position of lightning flashes; and vii. an apparatus for displaying the results of the calculations of the algorithm to display microburst/windshear warning and the predicted location of the microburst/windshear.
Claim 21
Dependent Claim
55 words
The system of claim 14, 15 or 16 wherein the location of said center of activity is defined by the location of a lightning centroid and the area of the center of activity is determined by the radius of a convective cell and the instrumental error associated in the determination of the location of lightning.
Claim 22
Independent Claim
118 words
A method for predicting microburst/windshear hazard comprising the steps of: receiving signals produced by lightning; determining the location of the center of activity from said received signals; determining the direction and speed of said center of activity; determining the rate of lightning flashes; determining the change in the rate of lightning flashes; determining that a microburst/windshear is about to occur when the rate of lightning exceeds a first threshold value, and the change in the rate of lightning exceeds a second threshold value and a peak in the rate of lightning is measured within a given location as defined by the lightning flashes; and warning the user that a microburst/windshear will occur within a defined number of minutes.
Claim 23
Independent Claim
118 words
A method for predicting microburst/windshear hazard comprising the steps of: receiving signals produced by lightning; determining the location of the center of activity from said received signals; determining the direction and speed of said center of activity; determining the rate of lightning flashes; determining the change in the rate of lightning flashes; determining that a microburst/windshear is about to occur when the rate of lightning exceeds a first threshold value, and the change in the rate of lightning exceeds a second threshold value and a peak in the rate of lightning is measured within a given location as defined by the lightning flashes; and warning the user that a microburst/windshear will occur within a defined number of minutes.
References Cited (Backward Citations)
US3727225A
Cited
US3215997A
Cited
US3369240A
Cited
US3670332A
Cited
US3754263A
Cited
US3790884A
Cited
US3886554A
Cited
US4023408A
Cited
US3973258A
Cited
US4115732B1
Cited
US4115732A
Cited
US4198599A
Cited
US4215345A
Cited
US4245190A
Cited
US4424481A
Cited
US4395906A
Cited
US4422037A
Cited
US4506211A
Cited
US4792806B1
Cited
US4543580A
Cited
US4543580B1
Cited
US4792806A
Cited
US4594543A
Cited
US4684951A
Cited
US4672305A
Cited
US4746924A
Cited
US4841304A
Cited
US4916455A
Cited
US4914444A
Cited
US4806851A
Cited
US4803421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |