Weak shock waves in the ionosphere.
Shock wave formed by sounding rocket entering D region, showing effect on errors in measuring ionic composition of region
SHOCK WAVE↗
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Results for “IONOSPHERIC SOUNDING”
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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Ionospheric disturbances caused by long period sound waves generated by Saturn-Apollo launches
Wavelike disturbances were observed in the ionosphere following several nuclear explosions in early 1960's. Supersonic shock waves within the atmosphere generated by large rockets can cause ionospheric electron density perturbations. A CW phase path Doppler array in the New York area was operated during the Saturn-Apollo 12 and 13 launches and recorded Doppler frequency fluctuations due to rocket launchings. Cross correlation and power spectral analyses of the phase path-path Doppler frequency variation records showed that the phase velocities of the signal arrivals were from south of the array with 700 - 800 m/sec corresponding to periods in the range of 2 to 4 minutes. Ionograms taken every 60 seconds from Wallops Islands showed clearly ionospheric disturbances due to rockets. The group velocities were estimated to be of the order of 450 m/sec 1 obtained from the earliest visible disturbances seen on CW phase path Doppler records and ionograms together with the rocket trajectory data.
Rao, G. L.↗
On One of the Possible Formation Mechanisms of Narrow Sporadic Ionosphere Layers
Electron density, and sounding rocket investigation of narrow sporadic ionosphere layers
SOUNDING ROCKET↗
SOME EARLY RESULTS FROM THE IONOSPHERIC TOP-SIDE SOUNDER SATELLITE
Alouette data and results on the latitudinal variation of an ionospheric structure and of the geographical extent of high latitude spread-f
IONOSPHERIC SOUNDING↗
A theoretical study of the martian ionosphere.
Theoretical study of martian ionosphere for analyzing the feasibility of rocket exploration of the planet
IONOSPHERIC SOUNDING↗
First Results in NASA Topside Sounder Satellite Program
Preliminary results of nasa topside sounder satellite program, using a two-frequency radio- pulse sounder
IONOSPHERIC SOUNDING↗
A cosmic noise radio astronomy exiperment for the ionospheric explorer.
Calibration of fixed frequency ionospheric explorer satellite used for cosmic radio noise measurements
IONOSPHERIC SOUNDING↗
Rocket experiments in the mid-latitude lower ionosphere.
Rocket experiments at wallops island, virginia to study lower ionosphere by direct local measurements and radio wave propagation
IONOSPHERIC SOUNDING↗
Direct measurements of helium and hydrogen ion concentration and total ion density to an altitude of 940 kilometers.
Ion current vs altitude in terms of helium, hydrogen, oxygen and total concentration, using rocketborne data
UPPER ATMOSPHERE↗
Ionosphere topside sounder studies. ii- the calculation of the electron density and the magnetic field parameters at the alouette i orbit
Ionosphere Topside Sounder program - electron density and geomagnetic field at Alouette I orbit
ALOUETTE I SATELLITE↗
Recombination and transport in the nighttime f layer of the ionosphere.
Recombination, coefficients vertical diffusion and transport velocities calculated for ionospheric F layer
IONOSPHERIC SOUNDING↗
Problems and results of astrophysics <probleme und ergebnisse der weltraum-physik<.
Astrophysics problems covering exploration of atmosphere, ionosphere, radiation, solar emission, geomagnetic and interplanetary magnetic fields
IONOSPHERIC SOUNDING↗
Ionospheric research by means of rockets and satellites.
Rocket and satellite investigations of ionospheric electron and ion collision frequencies, solar radiation, D, E and F regions, plasma frequency probe, etc
SATELLITE OBSERVATION↗
Research within the ionosphere.
Satellite and rocket studies of neutral atmosphere and ionosphere with emphasis on charged particle motion in gravitational and electromagnetic fields
PARTICLE MOTION↗
D-region probe theory.
Systematic theory of parachute-borne blunt probe operating in ionospheric D region
ION PROBE↗
A dispersion anomaly in whistlers received on alouette 1.
Alouette I whistler observations at 1000 km show dispersion anomaly that increases with increasing frequency
WHISTLER RECORDER↗
The reduction of ionograms from the bottomside and topside.
Method reducing ionograms to electron density height profiles on digital computer by representations as parabolic lamination
DIGITAL COMPUTER↗
Excitation of the lower hybrid resonance by an antenna in the ionosphere.
Plasma oscillation resonance phenomena of ionospheric antenna excitation near lower hybrid resonant frequency
IONOSPHERIC SOUNDING↗