US4875770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wind shear detector
Assignee: Lockheed Martin Corp
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Filing: 1987-03-23
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Granted: 1989-10-24
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Expires: 2007-03-23
Abstract
Abstract A laser doppler velocimeter system for wind shear detection comprising means for generating a beam of radiant energy, an optical system coupled to the beam for directing a first portion of the beam a predetermined distance to a scatterer of radiant energy, means coupled to the beam for conducting a second portion of the beam through a polarization preserving medium, the length of the medium substantially matching the predetermined distance, means for mixing the second portion of the beam with the radiant energy reflected by the scatterer and means coupled to the means for mixing for measuring a component of the velocity measurements of the scatterer. The velocity includes both horizontal and vertical components. The system may also be adapted for measurement of multiple predetermined distances by using multiple means for conducting a second portion of the beam, each of said multiple means having a length substantially matching one of the multiple predetermined distances. The beam of radiant energy used may be an infrared laser.
Inventors
- 👤 Philip L. Rogers
- 👤 Milton Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:38
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/88; G01S17/95; Y; Y02; Y02A; Y02A90/00; Y02A90/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
A wind velocity gradient detection system comprising: means for generating a beam of radiant energy; an optical system coupled to said beam for directing a first portion of said beam over multiple predetermined distances to a scatterer of radiant energy; multiple means coupled to said beam for conducting a second portion of said beam through a polarization medium, each of said multiple means having a length substantially matching one of said multiple predetermined distances; means for mixing said second portion with said radiant energy reflected by said scatterer; and means coupled to said means for mixing for measuring a component of the velocity of said scatterer.
Claim 2
Dependent Claim
106 words
A wind velocity gradient detection system comprising: means for generating a beam of radiant energy; an optical system coupled to said beam for directing a first portion of said beam over multiple predetermined distances to a scatterer of radiant energy; multiple means coupled to said beam for conducting a second portion of said beam through a polarization medium, each of said multiple means having a length substantially matching one of said multiple predetermined distances; means for mixing said second portion with said radiant energy reflected by said scatterer; and means coupled to said means for mixing for measuring a component of the velocity of said scatterer.
Claim 3
Dependent Claim
18 words
The wind velocity gradient detection system of claim 1 wherein said beam of radiant energy is a laser.
Claim 4
Dependent Claim
19 words
The wind velocity gradient system of claim 1 wherein a display means is coupled to said means for measuring.
Claim 5
Dependent Claim
20 words
The wind velocity gradient system of claim 1 wherein the vertical component of the velocity of said scatterer is measured.
Claim 6
Dependent Claim
20 words
The wind velocity gradient system of claim 1 wherein the horizontal component of the velocity of said scatterer is measured.
Claim 7
Dependent Claim
15 words
The wind velocity gradient system of claim 2 wherein said laser is an infrared laser.
Claim 8
Dependent Claim
99 words
A wind velocity gradient system comprising: means for generating a beam of radiant energy; an optical system coupled to said beam for directing a first portion of said beam a predetermined distance to a scatterer of radiant energy; a single mode polarization preserving fiber optic cable coupled to said beam for conducting a second portion of said beam, the length of said cable matching said predetermined distance; means for mixing said second portion with said radiant energy reflected by said scatterer; and means coupled to said means for mixing for measuring a component of the velocity of said scatterer.
Claim 9
Dependent Claim
99 words
A wind velocity gradient system comprising: means for generating a beam of radiant energy; an optical system coupled to said beam for directing a first portion of said beam a predetermined distance to a scatterer of radiant energy; a single mode polarization preserving fiber optic cable coupled to said beam for conducting a second portion of said beam, the length of said cable matching said predetermined distance; means for mixing said second portion with said radiant energy reflected by said scatterer; and means coupled to said means for mixing for measuring a component of the velocity of said scatterer.
Claim 10
Dependent Claim
17 words
The wind velocity gradient system of claim 7 wherein said beam of radiant energy is a laser.
Claim 11
Dependent Claim
43 words
The wind velocity gradient system of claim 7 wherein there exists multiple predetermined distances and multiple single mode fiber optic cables for conducting a second portion of said beam, each of said cables having a length matching one of said multiple predetermined distances.
Claim 12
Dependent Claim
19 words
The wind velocity gradient system of claim 7 wherein a display means is coupled to said means for measuring.
Claim 13
Dependent Claim
20 words
The wind velocity gradient system of claim 7 wherein the vertical component of the velocity of said scatterer is measured.
Claim 14
Dependent Claim
20 words
The wind velocity gradient system of claim 7 wherein the horizontal component of the velocity of said scatterer is measured.
Claim 15
Dependent Claim
15 words
The wind velocity gradient system of claim 8 wherein said laser is an infrared laser.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |