Passive method to measure strength of turbulence
Abstract
Disclosed is a method to passively measure and calculate the strength of turbulence via the index of refraction structure constant C.sub.n.sup.2 from video imagery gathered by an imaging device, such as a video camera. Processing may occur with any type computing device utilizing a processor executing machine executable code stored on memory. This method significantly simplifies instrumentation requirements, reduces cost, and provides rapid data output. This method combines an angle of arrival methodology, which provides scale factors, with a new spatial/temporal frequency domain method. As part of the development process, video imagery from high speed cameras was collected and analyzed. The data was decimated to video rates such that statistics could be computed and used to confirm that this passive method accurately characterizes the atmospheric turbulence. C.sub.n.sup.2 accuracy from this method compared well with scintillometer data through two full orders of magnitude and more capability is expected beyond this verification.
- Inventors:
- Issue Date:
- Research Org.:
- Nevada National Security Site/Mission Support and Test Services LLC
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1568761
- Patent Number(s):
- 10389940
- Application Number:
- 15/201,306
- Assignee:
- Mission Support and Test Services, LLC (Las Vegas, NV)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
G - PHYSICS G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- DOE Contract Number:
- AC52-06NA25946
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 07/01/2016
- Country of Publication:
- United States
- Language:
- English
Citation Formats
O'Neill, Mary Morabito, and Terry, David. Passive method to measure strength of turbulence. United States: N. p., 2019.
Web.
O'Neill, Mary Morabito, & Terry, David. Passive method to measure strength of turbulence. United States.
O'Neill, Mary Morabito, and Terry, David. Tue .
"Passive method to measure strength of turbulence". United States. https://www.osti.gov/servlets/purl/1568761.
@article{osti_1568761,
title = {Passive method to measure strength of turbulence},
author = {O'Neill, Mary Morabito and Terry, David},
abstractNote = {Disclosed is a method to passively measure and calculate the strength of turbulence via the index of refraction structure constant C.sub.n.sup.2 from video imagery gathered by an imaging device, such as a video camera. Processing may occur with any type computing device utilizing a processor executing machine executable code stored on memory. This method significantly simplifies instrumentation requirements, reduces cost, and provides rapid data output. This method combines an angle of arrival methodology, which provides scale factors, with a new spatial/temporal frequency domain method. As part of the development process, video imagery from high speed cameras was collected and analyzed. The data was decimated to video rates such that statistics could be computed and used to confirm that this passive method accurately characterizes the atmospheric turbulence. C.sub.n.sup.2 accuracy from this method compared well with scintillometer data through two full orders of magnitude and more capability is expected beyond this verification.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {8}
}
Works referenced in this record:
Method for path-averaged cross-wind measurement
patent, March 2010
- Shapira, Joseph
- US Patent Document 7,685,873
Scintillometer for the measurment of the structure function constant and the inner scale of atmospheric refractive index fluctuations
patent, April 1994
- Thierman, Volker
- US Patent Document 5,303,024