Zobrazeno 1 - 10 of 20 pro vyhledávání: '"Michael E. Ash"'
1
Maximum likelihood estimation of fractional Brownian motion and Markov noise parameters
Autor: Michael E. Ash, Matthew E. Skeen
Publikováno v: Journal of Guidance, Control, and Dynamics. 18:379-382
Maximum likelihood estimation and power spectral density analysis are developed as tools for the analysis of stochastic processes. Some useful results from the theory of Markov stochastic processes are then presented followed by the introduction of f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::66123419360ae2742383e232b38066f2
https://doi.org/10.2514/3.21398
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3
Doubly averaged effect of the Moon and Sun on a high altitude Earth satellite orbit
Autor: Michael E. Ash
Publikováno v: Celestial Mechanics. 14:209-238
Infinite series expansions are obtained for the doubly averaged effects of the Moon and Sun on a high altitude Earth satellite, and the results used to interpret numerically integrated examples. New in this paper are: (1) both sublunar and translunar
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88d09b5873de1651052ff9b6d9962c6c
https://doi.org/10.1007/bf01376321
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5
Surface-Height Variations on Venus and Mercury
Autor: R. P. Ingalls, Michael E. Ash, W. B. Smith, Irwin I. Shapiro
Publikováno v: Radio Science. 5:411-423
Radar time-delay and Doppler observations have been used to infer surface-height variations near the equator of Venus. One method, applicable along the apparent equator within a few degrees from the subradar point, has a resolution of about 25 km in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00b15e10debf8f742c65d02ebd050a1c
https://doi.org/10.1029/rs005i002p00411
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6
Fourth Test of General Relativity: New Radar Result
Autor: Michael E. Ash, G. H. Pettengill, R. P. Ingalls, D. B. Campbell, Raymond F. Jurgens, W. B. Smith, Irwin I. Shapiro, Rolf B. Dyce
Publikováno v: Physical Review Letters. 26:1132-1135
New radar observations yield a more stringent test of the predicted relativistic increase in echo times of radio signals sent from Earth and reflected from Mercury and Venus. These "extra" delays may be characterized by a parameter $\ensuremath{\lamb
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::708046a37ec4f12c106bafa2e25274bd
https://doi.org/10.1103/physrevlett.26.1132
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7
Radar Measurements of the Surface Topography and Roughness of Mars
Autor: Charles C. Counselman, Michael E. Ash, G. H. Pettengill, Irwin I. Shapiro, Alan E. E. Rogers
Publikováno v: Radio Science. 5:465-473
During the period surrounding the 1969 opposition, the planet Mars was observed with the Haystack radar to determine the topography in a belt near the equator. Elevation values obtained for the same surface location on Mars on different days of obser
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::036abf82b7726c455b49a6e8a558cea3
https://doi.org/10.1029/rs005i002p00465
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10
Radar observations of Icarus
Autor: Michael E. Ash, R. P. Ingalls, M.L. Stone, L. P. Rainville, Gordon H. Pettengill, Irwin I. Shapiro, W. B. Smith
Publikováno v: Icarus. 10:432-435
The minor planet Icarus was observed with the 3.8-cm Haystack radar from 12 to 15 June 1968. Weak but significant echoes were detected indicating a radar cross section of about 0.1 km2, a radius of about 1 km, and an effective reflectivity of about 0
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::17296d6c6eb5d6f36f9f9b52ad309265
https://doi.org/10.1016/0019-1035(69)90101-8
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