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- W1995797228 abstract "A Monte Carlo technique simulates the effects of cloudcover on the performance of the Apollo On-board Navigation System. For each of three simulated Apollo missions, the probability of sighting at least a specific number of landmarks within the first two and one-half revolutions is determined. Cloudcover over the landmarks is derived from meteorological satellite data. These cloud amounts were found to be generally less than ground observed; the difference is believed to be due to the existence of small cumulus cells not resolved by the satellite, and the overestimation of sky cover by ground observers. A discussion of these factors is included. The results of the mission simulation program indicate that the number of sightings can be materially increased by a choice of landmarks that are distributed to conform to the operational characteristics of the On-board Navigation System as much as by choice for optimum climate." @default.
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- W1995797228 date "1968-10-01" @default.
- W1995797228 modified "2023-09-25" @default.
- W1995797228 title "Apollo Landmark Sighting: An Application of Computer Simulation to a Problem in Applied Meteorology" @default.
- W1995797228 doi "https://doi.org/10.1175/1520-0450(1968)007<0768:alsaao>2.0.co;2" @default.
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