Optical polarimetric properties of the materials in the PAGEOS 1 and Echo 2 satellite surfaces
Optical polarametric properties of materials in PAGEOS 1 and Echo 2 satellite surfaces
Lee, R. B., III↗
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Conjugate echoes observed by Alouette 2 topside sounder at the longitudes of Singapore
Ionogram conjugate echoes observed at Singapore longitudes by Alouette 2 topside sounder, attributing sequential occurrence to field-aligned irregularities in magnetosphere
Ramasastry, J.↗
Effect of Fokker-Planck collisions on plasma wave echoes
Fokker-Planck Coulomb collisions effect on plasma wave echoes
Johnston, G. L.↗
On the wavelength dependence of radar echoes from the moon
Lunar radar echoes wavelength dependence in terms of backscattering behavior
Burns, A. A.↗
On the theory of ionospheric scintillations of lunar radar echoes
Ionospheric scintillations of lunar radar echo components isolation by CW Doppler shift or coherent pulse time delay techniques
Perona, G.↗
Some observed characteristics of solar radar echoes and their implications
Solar radar echo characteristics, discussing coronal compressional waves and refraction by plasma clouds and moving plasma irregularities
James, J. C.↗
Numerical study of collisional effects on spatial ion-wave echoes
Collisional effects on second order spatial ion wave echo, evaluating velocity integral
Gould, R. W.↗
Second-order perturbed distribution associated with the plasma wave echo
Plasma wave echo, observing oscillatory behavior of perturbed distribution with different phases and amplitudes
Nishikawa, K.↗
Earth albedo effects on the orbital variations of Echo I and PAGEOS I
Echo 1 and PAGEOS 1 orbital elements variations, determining perturbing effects of earth albedo radiation pressure
Prior, E. J.↗
Three dimensional model of precipitation echoes for X-band radar data collected during BOMEX
Three dimensional statistical model for deriving precipitation estimate from X band radar echoes
Hudlow, M. D.↗
A technique for assessing probable distributions of tropical precipitation echo lengths for X-band radar from Nimbus 3 HRIR data
Statistical model for simulating radar echoes from tropical precipitation for ocean surface region using Nimbus 3 satellite infrared data
Hudlow, M. D.↗
An approximate solution for the radar echo pulse response for planetary radar altimeters
Numerical analysis of radar echo pulse response to compute expected return pulse amplitude and shape for planetary radar altimeters
Bundick, W. T.↗
In- and outflow field of hurricane Debbie as revealed by echo and cloud velocities from airborne radar into ATS-III pictures
In- and outflow fields in hurricane Debbie, using airborne radar echoes and ATS 3 satellite pictures
Black, P. G.↗
Possible observations and mechanism of very long delayed radio echoes
Beam-plasma mechanism of very long delayed radio echoes from ionosphere
Bruce, R. L.↗
Alouette 2 observations supporting the oblique echo model for the plasma frequency resonance
Plasma frequency resonance time duration-local electron cyclotron frequency relationship by oblique echo model
Benson, R. F.↗
Electron echo experiment - A new magnetospheric probe
Magnetospheric electron echo probe experiment, using sounding rocket and injecting gun for controlled particle trapping investigation
Hendrickson, R. A.↗
Head-echo data
The observations of head echoes of meteoroids are briefly discussed.
Southworth, R. B.↗
Measured physical and optical properties of the passive geodetic satellite /Pageos/ and Echo 1.
Two satellites used for geodesy, Pageos and Echo 1, have been observed in a continuing program since 1966 to determine the stability of their physical and optical properties. Measurements are made in the UBVRI spectral system. The amount of solar radiation reflected from a satellite's surface is measured photoelectrically and is calibrated against known stellar magnitudes by standard astronomical techniques. The calibrated satellite magnitudes are analyzed with respect to the sun-satellite-observer phase angle to infer the shape and size of the satellite and the reflective properties of the satellite's surface material. The physical and optical properties are used to determine proper position of the solar image on the satellite's surface, resulting in more precise geometric geodesy. Quantitative results from five observing periods indicate that, although local structural anomalies appear to exist, both satellites essentially maintained their nominal average 30.48-meter (50-ft) radius of curvature and specular reflecting characteristics.
Mcdougal, D. S.↗