Engineering topics

Levy, G. S.

Publications and source records attributed to Levy, G. S..

At least 55 records · Page 3

NASA NTRS1972

Microwave dual frequency propagation experiment using the Mariner Venus Mercury probe.

The Mariner Venus Mercury spacecraft (MVM) will be launched in a multiple planet flyby orbit. A coherent dual frequency down link operating at 2.3 and 8.4 GHz will be used to measure the dispersive nature of the transmission medium. Radio tracking will produce Doppler and range information at both 2.3 and 8.4 GHz so that the dispersive group and phase velocity perturbations of the medium can be measured. Interpretation of the dispersive results will yield information about the neutral and ionized atmospheres of Venus and Mercury, the interplanetary media, the solar wind, and corona.

Levy, G. S.↗

NASA NTRS1970

Multi-feed cone Cassegrain antenna Patent

Design and operation of multi-feed cone Cassegrain antenna

Katow, M. S.↗

NASA NTRS1970

The quasi-stationary coronal magnetic field and electron density as determined from a Faraday rotation experiment

Quasi-stationary coronal magnetic field and electron density from Faraday rotation experiment, using theoretical model

Levy, G. S.↗

NASA NTRS1969

Data processing method for a weak, moving telemetry signal

Method of processing data from a spacecraft, where the carrier has a low signal-to-noise ratio and wide unpredictable frequency shifts, consists of analogue recording of the noisy signal along with a high-frequency tone that is used as a clock to trigger a digitizer.

Kendall, W. B.↗

NASA NTRS1969

Pioneer 6 - Measurement of transient Faraday rotation phenomena observed during solar occultation

Transient Faraday rotation of S-band telemetry carrier observed during Pioneer 6 occultation by solar corona, correlating with decametric solar radio bursts

Levy, G. S.↗

NASA NTRS1969

Pioneer VI Faraday-rotation solar-occultation experiment.

Pioneer 6 S band telemetry carrier Faraday rotation during corona occultation measured by deep space tracking antenna

Levy, G. S.↗

NASA NTRS1969

Structure of the atmosphere of Venus derived from Mariner V S-band measurements.

Venus atmosphere structure determined from Mariner 5 flyby S band radio occultation measurements of ionosphere and atmosphere at illuminated and dark sides

Cain, D. L.↗

NASA NTRS1968

The ultra cone - An ultra-low-noise space communication ground radio-frequency system.

Ultra cone system for ultralow noise reception of RF space communication from Mariner 5 during occultation by Venus

Bathker, D. A.↗

NASA NTRS1967

Atmosphere and ionosphere of Venus from the Mariner V S-band radio occultation measurement.

Refractivity, temperature, pressure and electron density profiles in Venus atmosphere and ionosphere from Mariner 5 S-band radio occultation measurements

Cain, D. L.↗

NASA NTRS1967

Atmosphere and ionosphere of Venus from the Mariner 5 S-band radio occultation measurement

Explore the source record for details and available documents.

Cain, D. L.↗

NASA NTRS1967

A radio occultation experiment to probe the atmosphere of Venus.

Mariner Venus 1967 space probe, obtaining atmospheric pressure density and refractive index from radio signal frequency, intensity and phase changes

REFRACTIVE INDEX↗

NASA NTRS1967

Ground instrumentation for Mariner IV OCCULTATION experiment.

Ground instrumentation system for Mariner IV OCCULTATION experiment, using Doppler frequency perturbation method for Mars atmospheric parameters determination

OCCULTATION↗

NASA NTRS1967

The superior conjunction of Mariner IV

Radio communication system instrumentation for Mariner IV space probe, and received spectrograms

SPECTROGRAM↗

NASA NTRS1967

Lunar range radiation patterns of a 210-foot antenna at S-band.

Far field radiation patterns of Advanced Antenna System presented by Surveyor I on lunar surface

ANTENNA FIELD↗

NASA NTRS1967

A radio occultation experiment to probe the atmosphere of Venus.

Mariner Venus 1967 space probe, obtaining atmospheric pressure density and refractive index from radio signal frequency, intensity and phase changes

RADIO ASTRONOMY↗

NASA NTRS1967

Radio occultation measurement of the Martian atmosphere over two regions by the Mariner IV SPACE probe.

Radio occultation measurement of Martian atmosphere over two regions by Mariner IV SPACE probe

MARINER IV SPACE PROBE↗

NASA NTRS1967

A summary of preliminary results of the Mariner IV radio-occultation experiment.

Martian atmospheric and ionospheric characteristics from Mariner 4 radio occultation experiment results

Cain, D. L.↗

NASA NTRS1966

Efficient antenna systems - X-band gain measurements

X-band gain measurement of Venus Deep Space Instrumentation Facility antennas

DEEP SPACE INSTRUMENTATION FACILITY /DSIF/↗