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Robert Manning   Dr.  Other 
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Robert Manning published an article in July 2016.
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Anjan Bose

121 shared publications

Robert M. Manning

18 shared publications

Communications Division, ANALEX Corporation, 21000 Brookpark Road, Cleveland, Ohio 44135, U.S.A.

18
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4
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60
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(1970 - 2016)
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16
 
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CONFERENCE-ARTICLE 2 Reads 0 Citations Average Path Profile of Atmospheric Temperature and Humidity Structure Parameters from a Microwave Profiling Radiometer Robert Manning Published: 15 July 2016
The 1st International Electronic Conference on Atmospheric Sciences, doi: 10.3390/ecas2016-A001
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The values of the key atmospheric turbulence parameters (structure constants) for temperature and water vapor, i.e., CT2, and CQ2, are highly dependent upon the vertical height within the atmosphere thus making it necessary to specify profiles of these values along the atmospheric propagation path. The remote sensing method suggested and described in this work makes use of a rapidly integrating microwave profiling radiometer to capture profiles of temperature and humidity through the atmosphere. The integration times of currently available profiling radiometers are such that they are approaching the temporal intervals over which one can possibly make meaningful assessments of these key atmospheric parameters. These integration times, coupled with the boundary effects of the Earth’s surface are, however, unconventional for turbulence characterization; the classical Kolmogorov turbulence theory and related 2/3 law for structure functions prevalent in the inertial sub-range are no longer appropriate. An alternative to this classical approach is derived from first principles to account for the nuances of turbulent mechanics met with using radiometer sensing, i.e., the large-scale turbulence driven by the various possible boundary conditions within the buoyancy sub-range. Analytical expressions connecting the measured structure functions to the corresponding structure parameters are obtained. The theory is then applied to an experimental scenario involving radiometric profile measurements of temperature and shows very good results.

Conference 0 Reads 0 Citations A microwave radiometric method to obtain the average path profile of atmospheric temperature and humidity structure para... Robert M. Manning, Brian Vyhnalek Published: 16 March 2015
SPIE LASE, doi: 10.1117/12.2080258
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The values of the key atmospheric propagation parameters CT2 , CQ2 , and CTQ are highly dependent upon the vertical height within the atmosphere thus making it necessary to specify profiles of these values along the atmospheric propagation path. The remote sensing method suggested and described in this work makes use of a rapidly integrating microwave profiling radiometer to capture profiles of temperature and humidity through the atmosphere. The integration times of currently available profiling radiometers are such that they are approaching the temporal intervals over which one can possibly make meaningful assessments of these key atmospheric parameters. Since these parameters are fundamental to all propagation conditions, they can be used to obtain Cn2 profiles for any frequency, including those for an optical propagation path. In this case the important performance parameters of the prevailing isoplanatic angle and Greenwood frequency can be obtained. The integration times are such that Kolmogorov turbulence theory and the Taylor frozen-flow hypothesis must be transcended. Appropriate modifications to these classical approaches are derived from first principles and an expression for the structure functions are obtained. The theory is then applied to an experimental scenario and shows very good results. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Article 0 Reads 0 Citations Derivation of Microwave Refractive Index Structure Constant $(C_{n}^{2})$ of the Atmosphere From K-Band Interferometric ... James A. Nessel, Robert M. Manning Published: 01 November 2014
IEEE Transactions on Antennas and Propagation, doi: 10.1109/tap.2014.2347997
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PROCEEDINGS-ARTICLE 1 Read 0 Citations Verifying really complex systems Andreas Kuehlmann, Anjan Bose, David E. Corman, Rob A. Ruten... Published: 01 January 2008
Proceedings of the 45th annual conference on Design automation - DAC '08, doi: 10.1145/1391469.1391608
DOI See at publisher website
Article 0 Reads 54 Citations Mars Exploration Entry, Descent, and Landing Challenges Robert D. Braun, Robert M. Manning Published: 01 March 2007
Journal of Spacecraft and Rockets, doi: 10.2514/1.25116
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Article 1 Read 1 Citation Beam wave propagation within the second Rytov perturbation approximation Robert M. Manning Published: 01 April 1996
Radiophysics and Quantum Electronics, doi: 10.1007/bf02124666
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The applicability of the classical Rytov method in statistical wave propagation problems is reconsidered and expanded by demanding results that are of second order in the permittivity fluctuations, rather than limiting them to just the first Rytov perturbation approximation, as is traditionally done. It is shown that one must augment the well-known second order statistics (e.g., log-amplitude variance), as calculated from the first Rytov approximation, with first-order statistics (e.g., the average log-amplitude), as calculated from the second Rytov approximation. Thus, a complete solution is derived for the second Rytov approximation for general beam wave propagation through turbulent media, the permittivity fluctuations of which are described by the Kolmogorov-Obukhov spectrum. This then allows a complete and consistent treatment that yields the fact that the average log-amplitude is, in the general beam wave case, not equal to the additive inverse of the log-amplitude variance. This gives results from the Rytov method that are then in exact agreement with the corresponding limiting case of strong fluctuation theory, as well as a simplified analytical expression for beam wave broadening, and the correct theoretical explanation of the well-known applicability limit for the Rytov method.