Non-geostationary orbit satellite constellation for continuous coverage of northern latitudes above 25amp;deg; and its extension to global coverage tailored to the distribution of populated land masses on earth

摘要

A non-geostationary low earth orbit satellite constellation using elliptical orbits with apogees in the Northern Hemisphere to provide continuous coverage over the Continental United States of America (CONUS), and by extension to the other points in the Northern Hemisphere situated above 25° north latitude. The constellation provides time- continuous visibility with at least one satellite to any point above 25. degree. North latitude. An extension of the constellation has a combination of the elliptical orbits and at least one equatorial orbit to provide virtual global coverage. The distribution of capacity is deployed in proportion to the distribution of populations in the land masses of the earth. Time continuous visibility with at least one satellite is maintained by any point on earth north of the 50° South latitude, with a minimum number of satellites deployed. All satellites sharing the same orbit, or type of orbit, in the constellations above have the same orbital period, same apogee altitude and same perigee point. For all elliptical orbits in the constellation herein the argument of perigee can be adjusted to provide optimal service to specific regions (CONUS, Northern Europe, etc.)