Skip to menu Skip to content

Mobile Satellite Service Orbits

Please note: The Space Foundation will be closed for winter break beginning Dec. 17, reopening Tuesday, Jan. 3. Updates to will not occur until around Jan. 3. All website features will still be operational. Customer feedback will be delayed.

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 to create ubiquitous coverage for land and sea customers, especially in areas that were underserved by terrestrial mobile telephony. For years, MSS systems were designed using satellites in GEO or LEO that were able to transmit low-data rate information to mobile receiving systems, such as satellite telephones or receiving stations on ships.

Please login or Subscribe to view the rest of this content. Learn about subscription benefits!

Stats for this resource: word count: 82, number of exhibits: 0

Year: 2013
Country: United States
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 between spacecraft, avoiding the need for multiple hops between space and ground to...
Year: 2012
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 NEXT. The upgraded network will consist of ## active and ## spare satellites,...
Year: 2011
Iridium’s LEO constellation of ## active and ## spare satellites relay signals to each other directly, unlike other systems that require multiple hops between space and the ground to send signals around the world. In June 2010, the company named France’s Thales Alenia Space as prime contractor...
Year: 2010
Country: United States
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 as ships at sea, isolated rural villages, polar settlements, or other remote...
Year: 2009
Country: United States
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 places not served by terrestrial facilities. The services themselves can...
Year: 2008
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 of GEO satellites. In August 2008, the oldest and largest of these, Inmarsat, launched its ## Inmarsat-4 satellite,...
Year: 2005
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 telephone service is provided by satellite constellations...

Advanced Search