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Author: Eugene Y. Moroz
Publisher:
ISBN:
Category : Clouds
Languages : en
Pages : 26
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Book Description
Several sensors and techniques currently being investigated at the Air Force Geophysics Laboratory as part of its program to automate the observation of weather parameters are described. Included are a lidar cloud-height measuring system, a laser weather identifier, a decision tree approach for determination of present weather, a lidar slant visual range measuring system, and a tower mounted visibility meter approach for determination of slant visual range. (Author)
Author: Eugene Y. Moroz
Publisher:
ISBN:
Category : Clouds
Languages : en
Pages : 26
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Book Description
Several sensors and techniques currently being investigated at the Air Force Geophysics Laboratory as part of its program to automate the observation of weather parameters are described. Included are a lidar cloud-height measuring system, a laser weather identifier, a decision tree approach for determination of present weather, a lidar slant visual range measuring system, and a tower mounted visibility meter approach for determination of slant visual range. (Author)
Author: H. Albert Brown
Publisher:
ISBN:
Category : Automatic meteorological stations
Languages : en
Pages : 38
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Book Description
A study was performed to determine the feasibility of objectively and automatically determining two key components of an aviation weather observation: present weather and obstruction to vision. The automated system utilized was an instrumented tower and surface array of sensors located at the AFGL Weather Test Facility (WTF), Otis AFB, Massachusetts. The objective method consisted of a decision-tree program (AUTO) based on several uniquely different responses by these weather sensors to the same weather phenomena and on discrimination techniques using tower and surface instrument comparison. The ability of AUTO to monitor rapidly changing weather events and to discriminate different types of weather is demonstrated through selected hourly periods of observations taken at 1-min intervals. Hourly observations generated over a 14-month period, March 1978 through April 1979, are compared with FAA observations to determine the effectiveness of AUTO. Major areas of agreement were found in the discrimination of fog, haze, snow, rain, and no weather. Final results show that the FAA observations of the existence and non-existence of obstructions to vision and present weather were duplicated in 82 and 86% of the cases. Thus the acquisition of real weather for an aviation weather observation, a duty presently performed by a human observer, is obtainable through an objective decision-tree program using an automated sensor array. (Author).
Author: H. Albert Brown
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 44
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Book Description
The determination of subjective weather observations through the use of an automated array of weather sensors coupled with a decision tree program was examined through analysis of data gathered at the AFGL Weather Test Facility at Otis AFB, Mass. This report describes the instruments used in the array, the response of the instruments to type of weather observed, and the decision tree programs. Preliminary results indicate that a computer-controlled weather sensor array has potential value in determining objectively those types of weather previously relegated to human responsibility.
Author: United States. Office of Federal Coordinator for Meteorological Services and Supporting Research
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 132
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Book Description
Author:
Publisher:
ISBN:
Category : Meteorology
Languages : en
Pages : 796
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Book Description
Author:
Publisher:
ISBN:
Category : Environmental geology
Languages : en
Pages : 382
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1126
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Air Force Cambridge Research Laboratories (U.S.)
Publisher:
ISBN:
Category : Geophysics
Languages : en
Pages : 228
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Book Description
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of State, Justice, and Commerce, the Judiciary, and Related Agencies
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1108
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Book Description
Author:
Publisher:
ISBN:
Category : Cosmic physics
Languages : en
Pages : 914
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Book Description
