Btw, FYI, ads-b system uses Globalstar, and not until 2015,

来源: 于 2014-03-31 00:34:41 [旧帖] [给我悄悄话] 本文已被阅读：次

Globalstar won't have its next gen satellites to cover most of the world. Iridium has better coverages, but looks like it lost the contract to Globalstar.