[특허]Single-ended dual spatial filter detector for the passive measurement of winds and turbulence aloft

Single-ended dual spatial filter detector for the passive measurement of winds and turbulence aloft 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01B-009/02
출원번호	US-0589749 (1990-09-28)
발명자 / 주소	Churnside James H. (Boulder CO) Clifford Steven F. (Boulder CO) Hanson Steen G. (Fakse DKX)
출원인 / 주소	The United States of America as represented by the Secretary of Commerce (Washington DC 06)
인용정보	피인용 횟수 : 31 인용 특허 : 0

초록 ▼

The disclosed invention is a measurement device for use in determining wind turbulence in the atmosphere, such as the cross-wind velocity and strength of refractive turbulence in a localized region. In the preferred embodiment, the device is comprised of: a telescope for collimating the light received from the light source, the telescope placed in front of a pair of spatially filtered optical receivers and focussed at infinity; a pair of gratings; a collecting lens, placed behind the gratings to collect the spatially filtered light; a photodetector to collect the light; an amplifier to amplify the signal received from the photodetector, and; a spectrum analyzer to analyze the interference pattern created by the gratings. The device uses the information contained in the light as it is scattered into its various Fourier components as the light passes through the atmosphere. This information, by means of the two filters, is processed to determine the turbulence, whose wavenumber is the difference of the spatial filter wavenumber of the first and the second spatial filters.

대표청구항 ▼

A single-ended dual spatial filter detector, using a wide range of natural or artificial light sources or transmitters, for passive measurement of winds and turbulence aloft, said detector comprised of: means for collimating the light source, said collimating means placed in front of a means for spatially filtering the incident light; means for spatially filtering the light incident upon said spatially filtering means, said spatially filtering means located coaxially along the path of the light, and positioned behind the collimating means; means for collecting the spatially filtered light, said collecting means collecting the irradiance fluctuations that are generated by said spatially filtering means; means for detecting the spatially filtered light, said detecting means detecting the irradiance fluctuations that are generated by said spatially filtering means; means for amplifying the signal generated by said detecting means, said amplifying means transmitting a signal to a means for analyzing the interference pattern created by said spatially filtering means, and; means for analyzing the interference pattern created by said spatially filtering means to measure phase perturbations between the light source and means for spatially filtering the light.

이 특허를 인용한 특허 (31)

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Finley, Jeffery A.; Fersdahl, Mark C., System for and method of displaying levels of turbulence.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Single-ended dual spatial filter detector for the passive measurement of winds and turbulence aloft 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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연합인증

Single-ended dual spatial filter detector for the passive measurement of winds and turbulence aloft 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (31)

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