Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Satellite Laser Ranging"”.
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Low-noise frequency synthesis and picosecond timing for satellite laser ranging systems
… accuracy, thereby enabling the development of a satellite laser ranging (SLR) system with submillimeter precision. Different types of oscillators and frequency multipliers have been developed (RF and microwave) in order to provide a synchronous and low phase noise clock signal to the SLR timing …
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Theoretical and Experimental Analysis of the Performance of Two-Color Laser Ranging Systems
In satellite laser ranging, atmospheric refraction increases the optical pathlength from the ground to an orbiting satellite. Two-color laser ranging systems can be used to determine the atmospheric delay by measuring the difference in propagation times between optical pulses transmitted at the two …
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Spectral analysis of earth orientation results from Doppler tracking of the Navy Navigation Satellite System
Doppler tracking of the Navy Navigation Satellite System (NNSS) gives solutions for polar motion as a by-product of the orbital computation process. The polar motion estimation process at the Defense Mapping Agency is reviewed and comparisons of the Doppler results with the polar motion series of …
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Precise orbit determination and analysis from satellite altimetry and laser ranging
For optimum utilization of satellite-borne instrumentation, it is necessary to know precisely the orbital position of the spacecraft. The aim of this thesis is therefore two-fold - firstly to derive precise orbits with particular emphasis placed on the altimetric satellite SEASAT and secondly, to …
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Density Model Corrections Derived from Orbit Data to Characterize Upper Atmospheric Density Variations
… model corrections using readily available Satellite Laser Ranging (SLR) data, and to demonstrate this approach's validity for additional satellites with similar data sets in the future. The research also aims to utilize previously unused or little used sources of orbit state data to …
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Seasonal air and water mass redistribution and its effect on satellite and polar motion
The laser geodetic satellites Lageos and Starlette exhibit residual orbital motion with an unexplained seasonal component. In addition, recognized polar motion excitation sources do not account for a large portion of observed polar motion. It is hypothesized that air and ocean mass redistribution …
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Radiation force modeling for ICESat precision orbit determination
… (POD) for the Ice, Cloud and land Elevation Satellite (ICESat) relies on an epoch-state batch filter, in which the dynamic models play a central role. Its implementation in the Multi-Satellite Orbit Determination Program (MSODP) originally included a box-and-wing model, representing the …