The Timation (Time Navigation) technique of passive ranging is a concept that could be expanded to provide a worldwide navigation service. Passive ranging is accomplished by measuring the time difference between electronic clocks located within the satellite and in the navigator's receiver. The Timation technique uses a highly stable, synchronized clock in the satellite; however, the navigator's clock stability may vary considerably, depending on the navigator's equipment and vehicle dynamics. One-hundred and seven satellite constellations are discussed in terms of their influence on earth coverage and navigation fix accuracy. The recommended configuration derived is comprised of three planes with nine satellites (3 x 9) each in 8-hour circular orbits at a 53 deg inclination. (Author).
TIMATION Navigation Satellite System Constellation Study
1972
33 pages
Report
No indication
English
Unmanned Spacecraft , Navigation satellites , Navigational aids , Computer programs , Stability , Optimization , Clocks , Networks , Passive systems , Accuracy , Position finding , High altitude , Synchronization(Electronics) , Time interval counters , Circular orbits , Coincidence range finding , Navigation , Time , Gdop(Geometric dilution of precision) , Geometric dilution of precision , Timation(Time-navigation)
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