Orbits
Mobile Satellite Service Orbits
2005 – Mobile Satellite Service (MSS) Space Activities
Satellites also provide mobile telephony services. Satellite mobile telephony enables regional to near-global coverage depending on the satellite or constellation, using handsets that communicate directly with a satellite. Mobile satellite…
2012 – Mobile Satellite Service (MSS) Space Activities
One MSS industry leader, Iridium, is implementing a major network upgrade. In June 2010, Iridium selected France’s Thales Alenia Space as prime contractor for its second-generation satellite constellation, named Iridium…
2013 – Mobile Satellite Service (MSS) Space Activities
Another MSS industry leader is Iridium, which operates a LEO constellation of ## active satellites to provide global coverage. The Iridium constellation uses intersatellite links to route network traffic directly…
Mobile Satellite Service Orbits
The MSS sector was created to address a specific market that was underserved by FSS: maritime voice and data, enabling emergency communications for ships at sea. Subsequent MSS systems tried…
Infrastructure: Space Infrastructure – TSR 2013
Infrastructure: Space Infrastructure - TSR 2013 examines global human spaceflight operations to include both the Chinese and US space stations, launch vehicles from all spacefaring nations, communications satellite constellations, PNT satellites,…
2011 – Mobile Satellite Service (MSS) Space Activities
Iridium’s LEO constellation of 66 active and 6 spare satellites relay signals to each other directly, unlike other systems that require multiple hops between space and the ground to send…
2010 – Mobile Satellite Service (MSS) Space Activities – Snapshot
Mobile satellite services (MSS) providers enable users to connect phones and other handheld devices directly to a satellite to provide near-constant coverage, even in places underserved by terrestrial facilities, such…
2009 – Mobile Satellite Service (MSS) – Snapshot
Mobile satellite services (MSS) providers connect phones and other handheld devices directly to satellites to provide near-constant coverage, even in African villages, Antarctic bases, offshore oil rigs, and other remote…
2008 – Mobile Satellite Service (MSS) Space Activities – Snapshot
While FSS systems all operate in GEO, mobile satellite service (MSS) systems operate in a range of orbits. Some MSS operators have built their networks using a limited number…