Passive microwave spectrum measurements of atmospheric water vapor and clouds
Cloud structure, atmospheric water vapor and liquid water contents from passive ground based microwave spectrum measurements
Staelin, D. H.↗
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Results for “passivation”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Apollo 11 passive seismic experiment
Apollo 11 passive seismic experiment package, discussing design, performance and various received signals
Dorman, J.↗
Algebraic criterion for absolute stability, optimality and passivity of dynamic systems
Necessary and sufficient conditions on coefficients of real nonnegative polynomial pi/omega/, obtaining algebraic criterion for stability, optimality and passivity of dynamic linear systems
Siljak, D. D.↗
Passive microwave observations over the oceans
Predicted brightness temperatures and theoretical models of ocean surface and atmosphere with passive microwave observations over oceans
Martin, L. U.↗
Passive optical wind and turbulence detection system Patent
Passive optical wind and turbulence remote detection system
Krause, F. R.↗
Comparison of active and passive thermal protection system weights for a delta body orbiter
Active and passive thermal protection system weights for delta body space shuttle for crossrange up to 1500 n.mi.
Guard, F. L.↗
Passive seismic experiment
Seismic signal analysis from Apollo 14 passive seismic experiment
Dorman, J.↗
Passive gravity-gradient libration dampers: Space vehicle design criteria (guidance and control)
Design criteria for passive gravity-gradient libration dampers
Source record↗
Passive retention/expulsion methods for subcritical storage of cryogens
Design and parametric analysis of passive retention/expulsion system for subcritically stored cryogens during low-g
Source record↗
Passive Retention/Expulsion Methods for Subcritical Storage of Cryogens
Development of passive retention/expulsion system for subcritical storage of cryogenic material during low gravity situations
Warren, R. P.↗
CO2 laser with simultaneous active and passive Q-switching
Carbon dioxide laser with simultaneous active rotating mirror Q switch and passive absorbing gas cell
Ersoy, O.↗
First slip times versus static phase error offset for the first- and passive second-order phase-locked loop
Slip vs static error offset for first and passive second order phase locked loop as function of signal to noise ratio via computer simulation
Holmes, J. K.↗
Stark effect modulation of a passively Q- switched CO2 laser
Stark effect saturable absorber modulation of passively Q switched carbon dioxide laser, using difluoroethane, difluoroethylene, methyl fluoroform, trichloroethylene and vinyl chloride
Claspy, P. C.↗
Spaceborne passive radiators for detector cooling
Specular reflecting passive radiators for synchronous satellite radiation detectors cooling
Gabron, F.↗
The problem of docking with a passive orbiting object which possesses angular momentum
Docking with passive orbiting spinning or tumbling objects for space debris elimination and space rescue operations, describing remotely controlled despinning and retrieval methods
Kaplan, M. H.↗
Optimum radars and filters for the passive sphere system
Studies have been conducted to determine the influence of the tracking radar and data reduction technique on the accuracy of the meteorological measurements made in the 30 to 100 kilometer altitude region by the ROBIN passive falling sphere. A survey of accuracy requirements was made of agencies interested in data from this region of the atmosphere. In light of these requirements, various types of radars were evaluated to determine the tracking system most applicable to the ROBIN, and methods were developed to compute the errors in wind and density that arise from noise errors in the radar supplied data. The effects of launch conditions on the measurements were also examined. Conclusions and recommendations have been made concerning the optimum tracking and data reduction techniques for the ROBIN falling sphere system.
Luers, J. K.↗
A study of passive microwave techniques applied to geologic problems
Passive microwave techniques were applied to geologic problems, in order to establish the microwave properties of representative rocks and minerals, and to examine the feasibility of using microwave radiometry for geologic mapping problems. A review of microwave pertaining to geology was conducted, coupled with laboratory and field investigations of the microwave emission characteristics of various geologic features. The laboratory studies consisted of dielectric constant measurements of rocks and minerals. A majority of field investigations conducted in the western United States, involved the microwave emission charateristics of rock types, and a portion of the study was concerned with microwave properties of mineralized areas. Experiments were also conducted in the vicinity of a coal seam fire in Colorado and across the San Andreas Fault Zone near the Salton Sea, in Southern California.
Edgerton, A. T.↗
Passive microwave studies
The application of passive microwave techniques from airborne and surface platforms for oceanography measurements is discussed. The program is designed to determine: (1) the optimum system parameters, (2) measurement techniques, and (3) the physical phenomena to enable unambiguous all-weather determination of the sea surface properties of sea roughness, surface wind fields, temperature, salinity, sea ice, and pollution. The advantages and disadvantages of the airborne and fixed station operations are examined.
Hollinger, J. P.↗