Mariner 2 microwave radiometer experiment and results
Mariner ii spacecraft microwave radiometer experiment & venus space probe
MICROWAVE APPARATUS↗
Engineering topics
Barrett, A. H.
Publications and source records attributed to Barrett, A. H..
On the spectrum and relative intensities of interstellar oh lines
Line frequencies, relative intensities, and transition probabilities of OH lines in interstellar microwave spectrum
LINE SPECTRUM↗
Radio observations of hydroxyl ion in the interstellar medium
Radio observation of hydroxyl radical in absorption spectrum of cassiopeia a
CASSIOPEIA A↗
Radio observations of oh in the interstellar medium.
Existence of oh in interstellar medium, detected in radio absorption spectrum of cassiopeia-a
RADIO OBSERVATION↗
MARINER II- PRELIMINARY REPORTS ON MEASUREMENTS OF VENUS. MICROWAVE RADIOMETERS
Description of the radiometer carried by the mariner ii space probe
TEMPERATURE MEASUREMENT↗
MARINER-2 MICROWAVE OBSERVATIONS OF VENUS
Microwave observations of venus utilizing two- channel radio telescope mounted on mariner ii spacecraft
RADIO TELESCOPE↗
MICROWAVE SPECTRAL LINES AS PROBES OF PLANETARY ATMOSPHERES
Microwave radio observations of planetary atmospheres to partially circumvent the hindrances imposed by the planetary radiation belt and the dense ionosphere
PLANETARY ATMOSPHERE↗
Observations of Venus, the Sun, Moon, and Tau A at 1.18-cm Wavelength
Venus, sun, moon, and tau a radio-astronomical observations
RADIO ASTRONOMY↗
A METHOD FOR THE DETERMINATION OF HIGH-ALTITUDE WATER-VAPOR ABUNDANCE FROM GROUND-BASED MICROWAVE OBSERVATIONS
High-altitude water-vapor abundance from ground- based microwave observations
MICROWAVE↗
Objectives of the Mariner Venus Microwave Radiometer Experiment
At present, there are several models involving the surface, atmosphere (and ionosphere), and cloud conditions of the planet Venus which attempt to account for the observed high brightness temperature of 600 degrees Kelvin in the microwave temperature region. None of these models can be definitely accepted or rejected on the basis of presently available data, and it is the goal of the microwave radiometer experiment planned for the Mariner Venus mission to determine which of the proposed models most nearly approximates Venusian conditions. The disc of the planet will be scanned at 4 wavelengths - 4, 8, 13.5 and 19 millimeters - to measure the temperature distribution across the planet. Measurement accuracy is expected to be to within 2 percent. In addition to the study of gross thermal characteristics of surface and atmosphere (or ionosphere), some information regarding the fine-scale thermal variations will be obtained. Since Venus appears to be continuously covered by clouds, it is obvious that only in the microwave region can one be sure of penetrating clear to the solid surface. Because of the absorbing characteristics of the Earth's atmosphere, and because of the relatively poor resolution obtainable in this region of the spectrum, one is forced to utilize the platform afforded by a planetary flyby or orbiter in order to conduct a reliable high resolution study of the planet. To do so from Earth (neglecting terrestrial atmospheric attenuation ) would require colossal radio telescopes.
RADIO ASTRONOMY↗