| 摘要 |
A method and apparatus for operating a radio for communicating between a terrestrial station and a satellite by (i) selecting one of a number of predetermined computational methods for computing longitudes of particular satellite ground path equator crossings based on minimum and maximum ground path latitudes and terrestrial station coverage perimeter latitudes, (ii) determining a first range of longitudes of satellite ground path equator crossings corresponding to the coverage perimeter, (iii) determining with the selected method, a first time of day when a first equator crossing has a longitude falling within the first range of longitudes, (iv) determining first and second time intervals for satellite ground path position to move from the first equator crossing into and out of the coverage perimeter and (v) activating the radio during a time determined from a combination of the first time of day and the first and second time intervals.
|
