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Your search keyword '"RADAR"' showing total 43 results
Start Over Descriptor "RADAR" Topic physics Publication Year Range More than 50 years ago Journal the astronomical journal
43 results on '"RADAR"'

1. Surface features on Mercury

Author

S. Zohar and Richard M. Goldstein

Subjects
Physics, Mineralogy, chemistry.chemical_element, Astronomy and Astrophysics, Mercury (element), law.invention, chemistry, Radar astronomy, Impact crater, Space and Planetary Science, law, Error analysis, Surface roughness, Radar, Remote sensing, Data reduction
Abstract

A high-resolution study of the surface of Mercury with a 2.388 GHz radar reveals the existence of hills and valleys with heights (depths) of about 1 km. There is also evidence supporting the existence of craters with diameters of about 50 km and depths of about 700 m.

Published
1974

3. The astronomical unit determined by radar reflections from Venus

Author

D. O. Muhleman, N. Block, and D. B. Holdridge

Subjects
Physics, biology, Space and Planetary Science, law, Astronomical unit, Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, law.invention, Remote sensing
Published
1962

6. Interplanetary Radar Time Delays in General Relativity

Author

G. C. Mcvittie

Subjects
Physics, General relativity, Spherical coordinate system, Equations of motion, Astronomy and Astrophysics, Astrophysics, Physics::Geophysics, law.invention, Radar astronomy, Space and Planetary Science, Planet, law, Physics::Space Physics, Astrophysics::Earth and Planetary Astrophysics, Radar, Interplanetary spaceflight, Relativistic quantum chemistry
Abstract

Earth to planet radar signal time delay in general relativity expressed in relativistic spherical polar coordinates of earth and planet

Published
1970

9. Icarus and the Determination of Astronomical Constants

Author

George W. Null and Jay H. Lieske

Subjects
ICARUS, Physics, General relativity, Astronomy, Astronomy and Astrophysics, Astrophysics, Astronomical system of units, law.invention, Theory of relativity, Space and Planetary Science, law, Physics::Space Physics, Schwarzschild metric, Astrophysics::Earth and Planetary Astrophysics, Radar, Planetary mass, Schwarzschild radius
Abstract

Icarus radar and optical observations analyzed to verify general relativity predictions using Schwarzschild metrics and to estimate solar oblateness, Mercury mass, etc

Published
1969

10. A radar investigation of Venus

Author

G. H. Pettengill, R. Price, G. M. Hyde, L. G. Kraft, J. V. Evans, W. B. Smith, H. W. Briscoe, and E. Gehrels

Subjects
Physics, biology, Space and Planetary Science, law, Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, law.invention, Remote sensing
Published
1962

12. A Radar Determination of the Rotation of Venus

Author

R. L. Carpenter

Subjects
Physics, biology, Space and Planetary Science, law, Astronomy and Astrophysics, Venus, Radar, Geodesy, biology.organism_classification, Rotation, law.invention
Published
1970

17. Radar Results as Constraints on the Models of Venus

Author

Duane O. Muhleman

Subjects
Physics, biology, Space and Planetary Science, law, Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, Remote sensing, Astrobiology, law.invention
Published
1962

18. A Comparative Study of the 3.8-cm Radar Scattering Law for Venus at Different Planetary Longitudes

Author

J. F. Vesecky and A. J. Meadows

Subjects
Physics, biology, Scattering, Astronomy, Astronomy and Astrophysics, Venus, biology.organism_classification, law.invention, Radar astronomy, Venus (Planet), Space and Planetary Science, law, Physics::Space Physics, Derivation method, Astrophysics::Earth and Planetary Astrophysics, Radar, Physics::Atmospheric and Oceanic Physics
Abstract

Radar scattering law derivation method for small regions of Venus surface, synthesizing CW spectra

Published
1971

19. Radar Doppler spectroscopy of Mars. 1. Elevation differences between bright and dark areas

Author

James B. Pollack, Carl Sagan, and Richard M. Goldstein

Subjects
Physics, genetic structures, Doppler spectroscopy, animal diseases, Doppler radar, Elevation, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Mars Exploration Program, Mars surface, law.invention, Space and Planetary Science, law, Physics::Space Physics, cardiovascular system, Astrophysics::Solar and Stellar Astrophysics, sense organs, Astrophysics::Earth and Planetary Astrophysics, Radar, Spectroscopy, Physics::Atmospheric and Oceanic Physics, circulatory and respiratory physiology, Remote sensing
Abstract

Doppler radar spectroscopy of Mars surface - elevation differences between bright and dark areas

Published
1967

21. Study of Venus by CW Radar-Results of the 1964 Conjunction

Author

Roland Leroy Carpenter

Subjects
Physics, biology, Space and Planetary Science, law, Conjunction (astronomy), Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, Remote sensing, law.invention
Published
1965

23. Radar determination of the rotations of Venus and Mercury

Author

B. R. Dyce, G. H. Pettengill, and I. I. Shapiro

Subjects
Physics, chemistry, biology, Space and Planetary Science, law, chemistry.chemical_element, Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, Remote sensing, Mercury (element), law.invention
Published
1967

25. Symposium on Radar and Radiometric Observations of Venus during the 1962 Conjunction: Mariner 2 microwave radiometer experiment and results

Author

F. T. Barath, Douglas E. Jones, J. Copeland, A. H. Barrett, and A. E. Lilley

Subjects
Physics, Radiometer, Meteorology, biology, Conjunction (astronomy), Microwave radiometer, Astronomy and Astrophysics, Venus, biology.organism_classification, law.invention, Space and Planetary Science, law, Radiometric dating, Radar, Remote sensing
Published
1964

28. Radar Measurements of Martian Topography

Author

Irwin I. Shapiro, Charles C. Counselman, L. P. Rainville, and G. H. Pettengill

Subjects
Physics, Martian, Synthetic aperture radar, Astronomy and Astrophysics, Side looking airborne radar, MARSIS, Space-based radar, law.invention, Space and Planetary Science, law, Radar imaging, Interferometric synthetic aperture radar, Radar, Remote sensing
Abstract

Martian topography during rotation observed using radar round trip echo delay at 7840 MHz, discussing dark areas relation to elevation

Published
1969

30. Radar Backscattering Properties of Venus at 70 CM

Author

R. F. Jurgens and R. B. Dyce

Subjects
Physics, biology, Space and Planetary Science, law, Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, Remote sensing, law.invention
Published
1970

31. Early Results of the 1961 JPL Venus Radar Experiment

Author

Duane O. Muhleman

Subjects
Physics, Early results, biology, Space and Planetary Science, law, Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, Space-based radar, Remote sensing, Astrobiology, law.invention
Published
1961

32. Three-station radar and visual triangulation of meteors

Author

D. W. R. McKinley and Peter M. Millman

Subjects
Physics, Space and Planetary Science, business.industry, law, Astronomy and Astrophysics, Triangulation (computer vision), Computer vision, Artificial intelligence, Radar, business, Remote sensing, law.invention
Published
1949

33. Study of Venus by CW radar-1964 results

Author

Roland Leroy Carpenter

Subjects
Physics, Planetary surface, biology, Electromagnetic spectrum, Instrumentation, High resolution, Astronomy and Astrophysics, Venus, NASA Deep Space Network, biology.organism_classification, law.invention, Continuous-wave radar, Space and Planetary Science, law, Radar, Remote sensing
Abstract

1964 results of high resolution CW radar spectral studies of Venus at NASA/JPL Deep Space Instrumentation Facility at Goldstone, California

Published
1966

35. Radar echoes from Venus at 38 Mc/sec

Author

J. C. James, R. P. Ingalls, and L. P. Rainville

Subjects
Synthetic aperture radar, Physics, biology, Early-warning radar, Astronomy and Astrophysics, Venus, biology.organism_classification, Space-based radar, law.invention, Continuous-wave radar, Radar astronomy, Space and Planetary Science, law, Radar imaging, Radar, Remote sensing
Published
1967

38. Radar Time-of-Flight Measurements to Venus

Author

R. M. Goldstein

Subjects
Physics, biology, Astronomy and Astrophysics, Venus, Radio navigation, Round-trip delay time, Flight time, biology.organism_classification, law.invention, Time of flight, Space and Planetary Science, law, Interval (graph theory), Radar, Remote sensing
Abstract

Radar round trip time of flight measurements to Venus for three month interval about inferior conjunction of August 1968

Published
1968

42. Radar measurements at 70 CM of Venus and Mercury

Author

D. B. Campbell, R. B. Dyce, and G. H. Pettengill

Subjects
Physics, chemistry, biology, Space and Planetary Science, law, chemistry.chemical_element, Astronomy and Astrophysics, Venus, Radar, biology.organism_classification, Mercury (element), Remote sensing, law.invention
Published
1967

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