US4028673A
Expired / Lapsed
US
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Crosswind measurements through pattern recognition techniques
Assignee: United States Department of the Army
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Filing: 1975-10-31
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Granted: 1977-06-07
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Expires: 1995-10-31
Abstract
Abstract An optical device for measuring crosswinds by pattern recognition techniques is described. The device includes a minicomputer to process observed spectral profiles. In the training phase spectral features, which are weakly intercorrelated but strongly correlated with the crosswind, are selected and classified with known winds. This data is stored in the computer. During the execution phase, the observed spectral features are compared with the previously stored classifications to yield a best estimate of the crosswind.
Inventors
- 👤 Fredrick J. Taylor
- 👤 Jack Smith
- 👤 Thomas H. Pries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
G; G01; G01W; G01W1/00; G01W1/02; G01P; G01P5/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
A pattern recognition method for measuring crosswind parameters comprising the steps of: a. generating a spectral profile signal of an optical radiation beam passing through a plurality of crosswinds having known parameters; b. dividing said spectral profile signals for each known crosswind into selected frequency components; c. averaging said frequency components over a selected period of time; d. digitizing said selected and averaged frequency components; e. classifying the digitized frequency components in accordance with crosswind parameters of interest; f. storing said classified frequency components as digital retrievable data in a memory; g. generating a test spectral profile signal of said optical beam passing through crosswind of unknown parameters; h. performing steps (b) to (f) on said test signal; and i. matching the test signal parameter data with the closest known parameter data to determine a best estimate of the parameters of the unknown crosswind.
Claim 2
Dependent Claim
144 words
A pattern recognition method for measuring crosswind parameters comprising the steps of: a. generating a spectral profile signal of an optical radiation beam passing through a plurality of crosswinds having known parameters; b. dividing said spectral profile signals for each known crosswind into selected frequency components; c. averaging said frequency components over a selected period of time; d. digitizing said selected and averaged frequency components; e. classifying the digitized frequency components in accordance with crosswind parameters of interest; f. storing said classified frequency components as digital retrievable data in a memory; g. generating a test spectral profile signal of said optical beam passing through crosswind of unknown parameters; h. performing steps (b) to (f) on said test signal; and i. matching the test signal parameter data with the closest known parameter data to determine a best estimate of the parameters of the unknown crosswind.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein selected atmospheric parameters other than crosswind are stored for comparison.
Claim 4
Dependent Claim
189 words
A pattern recognition system for measuring crosswind parameters comprising: a. means for generating a spectral profile signal of an optical radiation beam passing through a plurality of crosswinds having known parameters; b. filter means for dividing said spectral profile signals into selected frequency components; c. means for averaging said selected frequency components over a selected period of time; d. means for digitizing said selected and averaged frequency components; e. means for classifying said frequency components in accordance with crosswind parameters of interest; f. memory means for storing said classified frequency components as retrievable digital data; g. means for generating a test spectral profile signal of said optical beam passing through a crosswind of unknown parameters; h. central processing means for feeding each of said spectral profile signals generated by crosswinds of known parameters through means (b) through (e) for storage in said memory means, for feeding said test spectral profile signal through means (b) through (e) for storage in said memory means, and for matching the sotred test signal data with the closest stored known parameter data to obtain a best estimate of the parameters of the unknown crosswind.
Claim 5
Dependent Claim
189 words
A pattern recognition system for measuring crosswind parameters comprising: a. means for generating a spectral profile signal of an optical radiation beam passing through a plurality of crosswinds having known parameters; b. filter means for dividing said spectral profile signals into selected frequency components; c. means for averaging said selected frequency components over a selected period of time; d. means for digitizing said selected and averaged frequency components; e. means for classifying said frequency components in accordance with crosswind parameters of interest; f. memory means for storing said classified frequency components as retrievable digital data; g. means for generating a test spectral profile signal of said optical beam passing through a crosswind of unknown parameters; h. central processing means for feeding each of said spectral profile signals generated by crosswinds of known parameters through means (b) through (e) for storage in said memory means, for feeding said test spectral profile signal through means (b) through (e) for storage in said memory means, and for matching the sotred test signal data with the closest stored known parameter data to obtain a best estimate of the parameters of the unknown crosswind.
Claim 6
Dependent Claim
24 words
The system of claim 1 including means for generating atmospheric parameters other than crosswind parameters and storing said atmospheric parameters in said memory means.
Claim 7
Dependent Claim
31 words
The system of claim 3 further including time multiplexing means for time multiplexing the frequency signals generated by said averaging means and sequentially feeding said signals to said means for digitizing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |