Results 251 to 260 of about 27,319 (300)
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2015
Satellite Laser Ranging (SLR) is currently the unique technique to determine station coordinates, Earth Orientation Parameters (EOPs) and Stokes coefficients of the Earth’s gravity field from one observation equation with a high accuracy. These parameters form the so-called ‘three pillars’ (Plag and Pearlman, 2009) of the Global Geodetic Observing ...
Mathis Bloßfeld +3 more
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Satellite Laser Ranging (SLR) is currently the unique technique to determine station coordinates, Earth Orientation Parameters (EOPs) and Stokes coefficients of the Earth’s gravity field from one observation equation with a high accuracy. These parameters form the so-called ‘three pillars’ (Plag and Pearlman, 2009) of the Global Geodetic Observing ...
Mathis Bloßfeld +3 more
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Korea's first satellite for satellite laser ranging
Acta Astronautica, 2005Abstract Science Technology Satellite-2 (STSAT-2) has been developed since October 2002 as a sequel mission to KAISTSAT-4 (STSAT-1). STSAT-2 is scheduled to be launched into an ellipsoidal orbit of 300 km × 1500 km in December 2005 by the first Korea Satellite Launch Vehicle KSLV-1.
Lee, JH Lee, Jun Ho +6 more
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Satellite rings in solid state lasers
Applied Optics, 1979The intensity distribution of the nonlocalized rings from a Fabry-Perot standard is calculated. This is illuminated by a point source in order to characterize the interference pattern. The results show that the rings are identical with the nonlocalized rings around the principal (Gaussian) beam from a solid state laser (ruby or neodymium).
J, Fesquet, H, Irla, J, Roig
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Frequency stabilization of laser diode light sources in satellite-to-satellite laser interferometers
SPIE Proceedings, 2006The present work discusses methods of stabilizing the frequencies of commercially-available laser diodes. Laser diodes are generally compact and long-lived. The frequency stability, which makes them ideal for onboard laser interferometer light-sources, in applications such as the satellite-to-satellite tracking systems used to verify fluctuations in ...
S. Maehara +11 more
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Satellite Laser Ranging and its Applications
Celestial Mechanics, 1985Satellite laser ranging (SLR) provides an important capability for precise orbit determination and for geophysical parameter estimation to support a number of contemporary geodynamic and oceanographic investigations. The precision of the SLR measurement has improved from the early meter-level systems to the current capabilities of a few centimeters for
B. D. Tapley, B. E. Schutz, R. J. Eanes
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2000
This introduction to the next generation of human telecommunications enterprise examines the development of laser satellite communications and describes its advantages over previous technologies. It looks at the development of the technology and the industry through wired and wireless media and presents the vision, promise, and challenges of free-space
William H. Mott IV, Robert Sheldon
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This introduction to the next generation of human telecommunications enterprise examines the development of laser satellite communications and describes its advantages over previous technologies. It looks at the development of the technology and the industry through wired and wireless media and presents the vision, promise, and challenges of free-space
William H. Mott IV, Robert Sheldon
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Coherent inter-satellite and satellite-ground laser links
SPIE Proceedings, 2011Since February 2008 coherent laser communication links are operational in-orbit. Transmitting data at a rate of 5.625 Gbps they verify the capability of laser communication exemplarily in LEO-LEO and Ground-LEO constellations. The LEO-LEO links run with a bit error rate of 10-11. Acquisition typically is closed within seconds.
Mark Gregory +5 more
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SPIE Proceedings, 2005
Currently in the initial stages of development, the endeavor aims to use satellite-to-satellite tracking laser interferometer-based optical technique, to document fluctuations in earth's gravitational field indicating other critical changes in the environment. This system must be able to measure infinitesimal changes in the relative velocity of the two
Shinya Maehara +11 more
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Currently in the initial stages of development, the endeavor aims to use satellite-to-satellite tracking laser interferometer-based optical technique, to document fluctuations in earth's gravitational field indicating other critical changes in the environment. This system must be able to measure infinitesimal changes in the relative velocity of the two
Shinya Maehara +11 more
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Optical Metrology Terminal for Satellite-to-Satellite Laser Ranging
2022Interferometric laser ranging is a powerful enabling technology for high-precision satellite-to-satellite tracking within the context of Earth observation, gravitational wave detection, and formation flying. Since the launch of the gravity field mission GRACE Follow-On in 2018, the onboard Laser Ranging Interferometer has successfully been operating as
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