Abstract
A program of ALSEP-Quasar Very Long Baseline Interferometry (VLBI) is being carried out at the Jet Propulsion Laboratory. These observations primarily employ a ‘4-antenna’ technique whereby simultaneous observations with two antennas at each end of an intercontinental baseline are used to derive the differential interferometric phase between a compact extragalactic radio source (usually a quasar) and a number of ALSEP transmitters on the lunar surface. A continuous ALSEP-quasar differential phase history over a few hour period will lead to milliarcsecond angular accuracy in measuring the lunar position against the quasar reference frame if suitable calibration measurements are obtained. Development of this application of the 4-antenna technique has been underway at JPL for more than a year and is now producing high quality data utilizing Deep Space Network (DSN) stations in Australia, Spain, and Goldstone, California as well as the STDN ‘Apollo’ station at Goldstone. These high accuracy observations are of value to tie the lunar ephemeris to a nearly inertial extragalactic reference frame, to test gravitational theories, and to measure the Earth-Moon tidal friction interaction.
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Bender, P. L., Currie, D. G., Dicke, R. H., Eckhardt, D. H., Faller, J. E., Kaula, W. M., Mulholland, J. D., Plotkin, H. H., Poultney, S. K., Silverberg, E. C., Wilkinson, D. T., Williams, J. G., and Alley, C. O.: 1973, ‘The Lunar Laser Ranging Experiment’,Science 182, 229–238.
Berman, A. L.: 1970, ‘A New Tropospheric Range Refraction Model’, inThe Deep Space Network, Space Programs Summary 37-65, Vol. II, pp. 140–163, Jet Propulsion Laboratory, Pasadena, Calif., September 30.
Brans, C. and Dicke, R. H.: 1961, ‘Mach's Principle and a Relativistic Theory of Gravitation’,Phys. Rev. 124, 925–935.
Burnell, H., Phillips, H. and Zanteson, R.: 1975, ‘Meteorological Monitoring Assembly’,JPL Deep Space Network Progress Report 42-29.
Chao, C. C.: 1974, ‘The Tropospheric Calibration Model for Mariner Mars 1971’,Jet Propulsion Laboratory Technical Report 32-1587 (March 1).
Clark, B. G.: 1973, ‘The NRAO Tape-Recorder Interferometer System’,Proc. IEEE 61, 1924–1248.
Counselman III, C. C.: 1976, ‘Radio Astrometry’, inAnn. Rev. Astron. Astrophys. 14.
Counselman III, C. C., Hinteregger, H. F., and Shapiro, I. I.: 1972, ‘Astronomical Applications of Differential Interferometry’,Science 178, 607–608.
Counselman III, C. C., Hinteregger, H. F., King, R. W., and Shapiro, I. I.: 1973, ‘Lunar Baselines and Libration from Differential VLBI Observations of ALSEPS’,The Moon 8, 484–489.
Counselman III, C. C., Kent, S. M., Knight, C. A., Shapiro, I. I., Clark, T. A., Hinteregger, H. F., Rodgers, A. E. F., and Whitney, A. R.: 1974, ‘Solar Gravitational Deflection of Radio Waves Measured by Very-Lomg-Baseline Interferometry’,Phys. Rev. Letters 33, 1621–1623.
de Sitter, W.: 1916, ‘Planetary Motion and the Motion of the Moon According to Einstein's Theory’,Monthly Notices Roy. Astron. Soc. 76,
Dicke, R. H.: 1966, ‘The Secular Acceleration of the Earth's Rotation and Cosmology’, inThe Earth-Moon System (ed. by B. G. Marsden and A. G. W. Cameron), Plenum, New York, pp. 98–164.
Dickinson, D. F., Grossi, M. D., and Pearlman, M. R.: 1970, ‘Refractive Corrections in High-Accuracy Radio Interferometry’,J. Geophys. Res. 75, 1619–1621.
Dirac, P. A. M.: 1938Proc. Roy. Soc. A. 165, 199.
Hoyle, F.: 1972,Quart. J. Rev. Astron. Soc.,13, 328–329.
Jones, H. S.: 1939, ‘The Rotation of the Earth and the Secular Acceleration of the Sun, Moon and Planets’,Monthly Notices Roy. Astron. Soc. 99, 541–558.
Kaula, W. M. and Harris, A. W.: 1975, ‘Dynamics of Lunar Origin and Orbital Evolution’,Rev. Geophys. Space Phys. 13, 363–371.
King, R. W.: 1975, ‘Precision Selenodesy via Differential Very-Long-Baseline-Interferometry’, Ph.D. Thesis, Massachusetts Institute of Technology.
King, R. W., Counselman III, C. C., and Shapiro, I. I.: 1976, ‘Lunar Dynamics and Selenodesy: Results from Analysis of VLBI and Laser Data’,J. Geophys. Res. 81, 6251–6256.
MacDoran, P. F.: ‘A First-Principles Derivation of the Differenced Range Versus Integrated Doppler (DRVID) Charged-Particle Calibration Method’,Space Programs Summary 37-62, Vol. II, February.
Mathur, N. C., Grossi, M. D., and Pearlman, M. R.: 1970, ‘Atmospheric Effects in Very Long Baseline Interferometry’,Radio Sci. 5, 1253–1261.
Michael, Jr., W. H., Clain, D. L., Fjeldbo, G., Levy, G. S., Davies, J. G., Grossi, M. D., Shapiro, I. I., and Tyler, G. L.: 1972, ‘Radio Science Experiments: The Viking Mars Orbiter and Lander’,Icarus 16, 57–73.
Moran, J. M. and Penfield, H.: 1976, ‘Test and Evaluation of Water Vapor Radiometers and Determination of their Capability to Measure Tropospheric Propagation Path Length’, SAO Final Report Contract NAS5-20975.
Moran, J. M. and Rosen, B. R.: 1975, ‘The Estimation of Tropospheric Propagation Path Length from Grand-Based Microwave Measurements’, presented at Annual Meet. U.S. National Comm. International Union of Radio Science, Boulder, Colorado.
Muller, P. M. and Stephenson, F. R.: 1975, ‘The Acceleration of the Earth and Moon from Early Astronomical Observations’, inGrowth Rhythms and History of the Earth's Rotation (ed. by E. D. Rosenberg and S. K. Runcorn), John Wiley, New York.
Preston, R. A., 1974, ‘Dual-Spacecraft Radio Metric Tracking’,JPL Deep Space Network Progress Report 42-22.
Preston, R. A., Harris, A. W., Slade, M. A., Williams, J. G., Fanselow, J. L., Thomas, J. B., Morabito, D. D., Spitzmesser, D. J., Skjerve, L. J., Johnson, B., and Jauncey, D.: 1975, ‘JPL Catalog of VLBI Radio Sources’,Bull. AAS 7, 517.
Reasenberg, R. D. and Shapiro, I. I.: 1975, ‘Bound on the Secular Variation of the Gravitational Interaction’, inProceedings of the 5th Conference on Atomic Masses and Fundamental Constants, Paris (in press).
Resch, G. M.: 1975, ‘Comparison of Microwave Radiometric and In-Situ Measurements of Tropospheric Water Vapor’, presented at Annual Meet. U.S. National Comm. International Union of Radio Science, Boulder, Colorado.
Robertson, D. S.: 1975, ‘Geodetic and Astrometric Measurements with Very-Long-Baseline Interferometry’, Ph.D. Thesis, Massachusetts Institute of Technology, Cambridge.
Schaper, L. W., Staelin, D. H., and Waters, J. W.: 1970, ‘The Estimation of Tropospheric Electrical Path Length by Microwave Radiometry’,Proc. Inst. Elec. Electron. Eng. 58, 272–273.
Slade, M. A.: 1971, ‘The Orbit of the Moon’, Ph.D. Thesis, Massachusetts Institute of Technology.
Slade, M. A., MacDoran, P. F., and Thomas, J. B.: 1972, ‘Very Long Baseline Interferometry (VLBI) Possibilities for Lunar Study’,JPL Technical Report, 32-1526, Vol. XII, pp. 35–39.
Slade, M. A., Preston, R. A., Harris, A. W., Skjerve, L. J., and Spitzmesser, D. J.: 1976, ‘ALSEP-Quasar Differential VLBI’,Deep Space Network Progress Report 42-33, pp. 37–54, Jet Propulsion Laboratory, Pasadena, California, June 15.
Slade, M. A., MacDoran, P. F., Shapiro, I. I., Spitzmesser, D. J., Gubbay, J., Legg, A., Robertson, D. S., and Skjerve, L.: 1974, ‘The Mariner 9 Quasar Experiment: Part I’,JPL Technical Report, 32-1526, Vol. XIX, pp. 31–35.
Thomas, J. B., Fanselow, J. L., MacDoran, P. F., Spitzmesser, D. J., and Skjerve, L.: 1976, ‘Radio Interferometry Measurements of a 16-km Baseline with 4-cm Precision’,JPL Technical Report, 32-1526, Vol. XVIII.
Van Flandern, T. C.: 1975, ‘A Determination of the Rate of Change of G’,Monthly Notices Roy. Astron. Soc. 170, 1.
Weinberg, S.: 1972,Gravitation and Cosmology, John Wiley, New York.
Williams, J. G., Slade, M. A., Eckhardt, D. H., and Kaula, W. M.: 1973, ‘Lunar Physical Libration and Laser Ranging’,The Moon 8, 469–483.
Wittels, J. J.: 1975, ‘Positions and Kinematics of Quasars and Related Radio Objects Inferred from VLBI Observations’, Ph.D. Thesis, Massachusetts Institue of Technology, Cambridge, 194 pp.
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Slade, M.A., Preston, R.A., Harris, A.W. et al. ALSEP-quasar differential VLBI. The Moon 17, 133–147 (1977). https://doi.org/10.1007/BF00640904
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DOI: https://doi.org/10.1007/BF00640904