 | |
| Company type | Subsidiary |
|---|---|
| Industry | Satellite communication |
| Founded | 1979; 46 years ago (1979) |
| Headquarters | London, England |
| Revenue | US$1,465.2 million (2018)[1] |
| US$288.7 million (2018)[1] | |
| US$125.0 million (2018)[1] | |
Number of employees | 1,500 (2019)[2] |
| Parent | Viasat |
| Website | www |
Inmarsat is a Britishsatellite telecommunications company, offering global mobile services. It provides telephone and data services to users worldwide, via portable or mobile terminals which communicate with ground stations through fifteengeostationarytelecommunications satellites.[3]
Inmarsat's network provides communications services to a range of governments,aid agencies, media outlets and businesses (especially in the shipping, airline and mining industries) with a need to communicate in remote regions or where there is no reliableterrestrial network. The company was listed on theLondon Stock Exchange until it was acquired by Connect Bidco, a consortium consisting ofApax Partners,Warburg Pincus, theCPP Investment Board and theOntario Teachers' Pension Plan, in December 2019.
On 8 November 2021, Inmarsat's owners andViasat announced the purchase of Inmarsat by Viasat. The acquisition was completed in May 2023.[4]
The present company originates from the International Maritime Satellite Organization (INMARSAT), a non-profitintergovernmental organisation established in 1979 at the behest of theInternational Maritime Organization (IMO)—the United Nations maritime body—and pursuant to the Convention on the International Maritime Satellite Organization, signed by 28 countries in 1976.[5][6] The organisation was created to establish and operate a satellite communications network for the maritime community.[5][7] In coordination with theInternational Civil Aviation Organization in the 1980s, the convention governing INMARSAT was amended to include improvements to aeronautical communications, notably for public safety.[5] The member states owned varying shares of the operational business.[6] The main offices were originally located in theEuston Tower, Euston Road, London.[8]
In the mid-1990s, many member states were unwilling to invest in improvements to INMARSAT's network, especially owing to the competitive nature of the satellite communications industry, while many recognised the need to maintain the organisation's older systems and the need for an intergovernmental organisation to oversee public safety aspects of satellite communication networks.[6] In 1998, an agreement was reached to modify INMARSAT's mission as an intergovernmental organisation and separate and privatise the organisation's operational business, with public safety obligations attached to the sale.[6]
In April 1999, INMARSAT was succeeded by theInternational Mobile Satellite Organization (IMSO) as an intergovernmental regulatory body for satellite communications, while INMARSAT's operational unit was separated and became the UK-based company Inmarsat Ltd.[5][9] The IMSO and Inmarsat Ltd. signed an agreement imposing public safety obligations on the new company.[5] Inmarsat was the first international satellite organisation that was privatised.[6]
In 2005,Apax Partners andPermira bought shares in the company. The company was also first listed on theLondon Stock Exchange in that year.[10] In March 2008, it was disclosed that U.S. hedge fundHarbinger Capital owned 28% of the company.[11] In 2009, Inmarsat completed the acquisition of satellite communications providerStratos Global Corporation (Stratos)[12] and acquired a 19-per cent stake inSkyWave Mobile Communications Inc., a provider of Inmarsat D+/IsatM2M network services which in turn purchased the GlobalWave business from TransCore.[13] Inmarsat won the 2010MacRobert Award for itsBroadband Global Area Network (BGAN) service.[14][15]
Inmarsat at first provided services usingMarisat[16] andMARECS,[17] which were launched by the US Navy and ESA respectively. In the early 1990s Inmarsat launched its first dedicatedsatellite constellation, Inmarsat-2. These satellites provided the Inmarsat-A service for maritime uses.[18] Between 1996 and 1998 Inmarsat's second constellation, Inmarsat-3, was launched. Consisting of five geostationary L-band satellites the constellation provides the Inmarsat-B and Inmarsat-C services, primarily providing low bandwidth communications and safety services for global shipping.[19] Following privatisation in 1999 Inmarsat developed and launched the first satellite communications system offering global coverage, BGAN.[20] This service was provided initially through the three Inmarsat-4 satellite launched between 2005 and 2008, and was then extended with the addition ofAlphasat in 2013.[21] In the 2010s, Inmarsat began development of the High Throughput Satellite (HTS) constellationGlobal Xpress, operating in theKa-band portion of the spectrum. Global Xpress, launched in 2015, offers global satellite capacity to various markets including shipping and aviation. Global Xpress also marks a significant expansion of Inmarsat's commercial operations in the aviation markets.[22][23] In 2017, Inmarsat launched its first S-band satellite, intended to provide (in association with anLTE ground network) inflight internet access across Europe.[24] In March 2018, Inmarsat partnered withIsotropic Systems to develop a state-of-the-art, all electronic scanning antenna intended to be used with the Global Xpress network.[25]
On 20 September 2018, Inmarsat announced its strategic collaboration withPanasonic Avionics Corporation for an initial ten-year period, to provide in-flight broadband for commercial airlines. Inmarsat will be the exclusive provider of Panasonic for connectivity using theKa-band satellite signal.[26] Inmarsat will now be offering Panasonic's portfolio of services to its commercial aviation customers.[27]
In March 2019 the company's board agreed to recommend a takeover offer of US$3.4 billion from Connect Bidco, a consortium consisting ofApax Partners,Warburg Pincus, theCPP Investment Board and theOntario Teachers' Pension Plan.[28] On 9 October 2019,Bloomberg reported that the UK government was set to approve the takeover with the final consultation for the deal set to conclude on 24 October 2019.[29] In November 2019, Inmarsat rejected an eleventh-hour effort to derail the US$6 billion sale, in which it was accused of ignoring a potential boost to the company's value. Oaktree argued that the recommended offer for Inmarsat failed to take account of the potential value of spectrum assets used by Inmarsat's U.S. partner Ligado.[30] Inmarsat delisted from London Stock Exchange, as the private equity funds took control of the company, on 5 December 2019; at the time, Inmarsat was operating 14 geostationary communications satellites.[31][32]
On 8 November 2021, a $7.3bn deal was announced between Inmarsat's owners, led by Apax and Warburg Pincus, andViasat in which Viasat would purchase Inmarsat for $850m in cash, issuing approximately 46 million shares of Viasat stock and taking on $3.4bn in debt.[33] Viasat has promised to honour a pledge made by the previous owners, when it was taken private in 2019, that Inmarsat would remain a UK-based company, and for other planned investments.[34]
Provisional approval for the merger was given by the UK'sCompetition and Markets Authority in March 2023[35] with 25 May 2023 set as the date for a formal decision.[36] On 31 May 2023, the acquisition was closed.[37][38]
The Inmarsat head office is atOld Street Roundabout in theLondon Borough of Islington.[39] Aside from its commercial services, Inmarsat providesGlobal Maritime Distress and Safety System (GMDSS) to ships and aircraft at no charge, as a public service.[40]
Services include traditional voice calls, low-level data tracking systems, and high-speed Internet and other data services as well as distress and safety services. TheBroadband Global Area Network (BGAN) network providesGeneral Packet Radio Service (GPRS) - type services at up to 800 kbit/s at a latency of 900-1100 ms[41] via anInternet Protocol (IP) satellite modem the size of a notebook computer,[42] while the Global Xpress network offers up to 50 Mbit/s at a latency of 700 ms[43] via antennas as small as 60 cm.[44] Other services provide mobileIntegrated Services Digital Network (ISDN) services used by the media for live reporting on world events via videophone,[45] and inflight Internet access via theEuropean Aviation Network.[24]
The price of a call via Inmarsat has now dropped to a level where they are comparable to, and in many cases lower than, international roaming costs, or hotel phone calls. Voice call charges are the same for any location in the world where the service is used. Tariffs for calls to Inmarsat country codes vary, depending on the country in which they are placed. Inmarsat primarily uses country code 870 (see below).[46] Newer Inmarsat services use an IP technology that features an always-on capability where the users are only charged for the amount of data they send and receive, rather than the length of time they are connected.[47] In addition to its own satellites, Inmarsat has a collaboration agreement withACeS regarding handheld voice services.[48]
There are three types of coverage related to each InmarsatI-4 satellite.[49]
Each satellite is equipped with a single global beam that covers up to one-third of the Earth's surface, apart from the poles. Overall, global beam coverage extends from latitudes of −82 to +82° regardless of longitude.
Each regional beam covers a fraction of the area covered by a global beam, but collectively all of the regional beams offer virtually the same coverage as the global beams. Use of regional beams allow user terminals (also called mobile earth stations) to operate with significantly smaller antennas. Regional beams were introduced with the I-3 satellites. Each I-3 satellite provides four to six spot beams; each I-4 satellite provides 19 regional beams.
Narrow beams are offered by the three Inmarsat-4 satellites. Narrow beams vary in size, tend to be several hundred kilometres across. The narrow beams, while much smaller than the global or regional beams, are far more numerous and hence offer the same global coverage. Narrow spot beams allow yet smaller antennas and much higher data rates. They form the backbone of Inmarsat's handheld (GSPS) and broadband services (BGAN). This coverage was introduced with the I-4 satellites. Each I-4 satellite provides around 200 narrow spot beams.
The InmarsatI-5 satellites provide global coverage using four geostationary satellites.[50] Each satellite supports 89 beams, giving a total coverage of approximately one-third of the Earth's surface per satellite. In addition, 6 steerable beams are available per satellite, which may be moved to provide higher capacity to selected locations.[51]
On 26 November 2019, the first satellite to extend the original 4 satellite first generation Global Xpress constellation was launched fromCentre Spatial Guyanais (CSG) by anAriane 5 launch vehicle.[52]
| Satellite | Coverage | Longitude | Vehicles | Launch date (UTC) | Services / notes |
|---|---|---|---|---|---|
| Marisat series | |||||
| Marisat F1 | Delta 2914 | 19 February 1976 | Decommissioned 1997 | ||
| Marisat F2 | Delta 2914 | 14 October 1976 | Transferred to Intelsat in 2004, decommissioned in 2008 | ||
| Marisat F3 | Delta 2914 | 10 June 1976 | Decommissioned | ||
| MARECS series | |||||
| MARECS-A | Ariane 1 | 20 December 1981 | Deactivated August 1996 | ||
| MARECS-B | Ariane 1 | 9 September 1982 | Launch failure | ||
| MARECS-C | Ariane 3 | 10 November 1984 | also known as MARECS-B2, deactivated 2002 | ||
| Inmarsat-2 series | |||||
| Inmarsat-2 F1 | Delta II 6925 | 30 October 1990 | Decommissioned 19 April 2013 Previous record holder for mission lifespan[53] | ||
| Inmarsat-2 F2 | Delta II 6925 | 8 March 1991 | Decommissioned in December 2014 World record for mission lifespan[53] | ||
| Inmarsat-2 F3 | Ariane 44L | 16 December 1991 | Decommissioned 2006 | ||
| Inmarsat-2 F4 | Ariane 44L | 15 April 1992 | Decommissioned 2012 | ||
| Inmarsat-3 series | |||||
| Inmarsat-3 F1 | Atlas IIA | 3 April 1996 | Reassigned to Maritime safety backup service in 2020 | ||
| Inmarsat-3 F2 | Proton-K/DM1 | 6 September 1996 | Reassigned to Maritime safety backup service in 2019 | ||
| Inmarsat-3 F3 | 178° East | Atlas IIA | 18 December 1996 | Existing and evolved services only | |
| Inmarsat-3 F4 | Ariane 44L | 3 June 1997 | Decommissioned 2016 | ||
| Inmarsat-3 F5 | AOR | 54° West | Ariane 44LP | 4 February 1998 | L-band, Classic Aero services and other various leases |
| Inmarsat-4 series | |||||
| Inmarsat-4 F1[54] | APAC | 178° East | Atlas V 431 | 11 March 2005 | L-band, BGAN family, Classic Aero, SPS and lease services |
| Inmarsat-4 F2[55] | IOR | 143.5° East | Zenit-3SL | 8 November 2005 | L-band, BGAN family, Classic Aero, SPS and lease services, FleetBroadband, SwiftBroadband Transferred from 25° East to 63° East in mid-2015[56] |
| Inmarsat-4 F3[57] | AMER | 98° West | Proton-M /Briz-M | 18 August 2008 | L-band, BGAN family, Classic Aero and lease services |
| Inmarsat-4A F4 (AlphaSat)[58] | EMEA | 25° East | Ariane 5ECA | 25 July 2013 | L-band, BGAN family, Classic Aero, SPS and lease services |
| Inmarsat-5 (GX) series[59][60] | |||||
| Inmarsat-5 F1 (GX-1)[61][62] | I-5 Europe, Middle East, Africa | 62.6° East | Proton-M /Briz-M | 8 December 2013 | Ka-band global data services, Global Xpress |
| Inmarsat-5 F2 (GX-2)[63] | I-5 Americas | 55° West | Proton-M /Briz-M | 2 February 2015 | Ka-band global data services, Global Xpress |
| Inmarsat-5 F3 (GX-3)[64] | I-5 Pacific, Asia, West Americas | 179.6° East | Proton-M /Briz-M | 28 August 2015 | Ka-band global data services, Global Xpress |
| Inmarsat-5 F4 (GX-4)[65] | I-5 Europe + in-orbit spare | 56.5° East | Falcon 9 Full Thrust | 15 May 2017[66] | Ka-band global data services, Global Xpress |
| Inmarsat-5 F5 (GX-5) | Europe and Middle East | 11° East | Ariane 5ECA | 26 November 2019[52] | Ka-band global data services, higher capacity GX satellite after the 4 first generation satellites |
| European Aviation Network | |||||
| Inmarsat S EAN (Hellas Sat 3)[67] | Europe | 39° East | Ariane 5 | 28 June 2017 | S-band services for European aviation |
| Inmarsat-6 series | |||||
| Inmarsat-6 F1[68] | H-IIA F45 | 22 December 2021 | |||
| Inmarsat-6 F2[69] | Falcon 9 Block 5 | 18 February 2023 | Failed in orbit | ||
The permanenttelephone country code for calling Inmarsat destinations is:[46]
The 870 number is an automatic locator; it is not necessary to know to which satellite the destination Inmarsat terminal is logged-in. SNAC is now usable by all Inmarsat services.
Country codes phased out on 31 December 2008 were
Since 18 July 2017, Inmarsat users using the service provided by China Transport Telecommunication & Information Center may apply for 11 digitsChinese mobile phone numbers starting with 1749. Aninternational call function is not required when making phone calls to such numbers fromMainland China.[70]
Inmarsat networks provide existing, evolved, and advanced services. Existing and evolved services are offered through land Earth stations which are not owned nor operated by Inmarsat, but through companies which have a commercial agreement with Inmarsat. Advanced services are provided via distribution partners but the satellite gateways are owned and operated by Inmarsat directly.
The "BGAN Family" is a set of IP-based shared-carrier services:[78]
The "BGAN M2M Family" is a set of IP-based services designed for long-term machine-to-machine management of fixed assets:[79]
The company offers portable and fixed phone services:[80]
These are based on older technologies:[82]
On 30 June 2008, theEuropean Parliament and theEuropean Council adopted the European's Decision to establish a single selection and authorisation process (ESAP – European S-band Application Process) to ensure a coordinated introduction of mobile satellite services (MSS) in Europe. The late 2008 selection process attracted four applications by prospective operators (ICO Global Communications (ICO), Inmarsat, Solaris Mobile (EchoStar Mobile), andTerreStar).[84][85]
In May 2009, theEuropean Commission selected two operators, Inmarsat Ventures and Solaris Mobile, giving these operators "the right to use the specific radio frequencies identified in the Commission's decision and the right to operate their respective mobile satellite systems". EU Member States now have to ensure that the two operators have the right to use the specific radio frequencies identified in the commission's decision and the right to operate their respective mobile satellite systems for 18 years from the selection decision. The operators are compelled to start operations within 24 months (May 2011) from the selection decision.[86][87][88][89]
Inmarsat'sS-band satellite programme provides mobile multimedia broadcast, mobile two-way broadband telecommunications and next-generation MSS services across all member states of the European Union and as far east as Moscow andAnkara by means of a hybrid satellite/terrestrial network. It was built byThales Alenia Space and launched in 2017.[90] The complementary ground network consists of around 300 LTE base stations constructed byDeutsche Telekom.[91]
TheEuropean Aviation Network faced legal challenges as of 2018[update], including one fromViasat alleging unfair bidding practices and a misuse of spectrum[92] and a ruling by the Belgian telecommunications regulator revoking permission for the use of the ground network inBelgium.[93]
Inmarsat ordered a fifth Global Xpress satellite fromThales Group. The satellite launched 26 November 2019 fromCentre Spatial Guyanais (CSG) aboard anAriane 5 launch vehicle.[52] The satellite has been described as a 'very high throughput satellite', and provides services to the Middle East, India and Europe.[94] former CEO Rupert Pearce (new CEO Rajeev Suri) indicated that Inmarsat planned further expansion of the Global Xpress network. Trials of new technologies demonstrated bandwidths of 330 Mbit/s over the existing Global Xpress network, far in excess of the existing 50 Mbit/s.[95]
Polar Coverage
To provide GX coverage to the users in theArctic region, Inmarsat plans to improve GlobalXpress connectivity to above 65° North.[59]
Two high-capacity, multi-beam payloads GX-10A and GX-10B were planned inHighly elliptical orbits (HEO) for reliable coverage. Inmarsat worked in partnership withSpace Norway HEOSAT in the Arctic Satellite Broadband Mission. The satellites carrying the Inmarsat payload were to be manufactured byNorthrop Grumman Innovation Systems (NGIS). Launch for GX-10A and 10B was scheduled for 2022.[96]
At the end of 2015, Inmarsat ordered two sixth generation satellites fromAirbus. These satellites planned to offer both Ka- and L-band payloads and additional capacity to the existing BGAN and Global Xpress networks.[97] In 2017, it was announced that the first of these satellites would be launched byMHI in December 2021.[98] The first of the two satellites,Inmarsat-6 F1, was successfully launched on 22 December 2021 on aH-IIA rocket.[99] The second satellite Inmarsat-6 F2 (GX 6B)[100] was launched on 18 February 2023 on aFalcon 9 Block 5 rocket, but suffered a power system failure in orbit that prevented it from becoming operational.[101]
In May 2023, Inmarsat ordered three eighth-generation satellites from SWISSto12 SA, which will be based on their HummingSat satellite platform.[102]
Inmarsat is participating in two ESAARTES programs, IRIS and ICE:
INMARSAT andIridium frequency bands abut each other at 1626.5 MHz thus each satcom radio has the ability to interfere with the other. Usually, the far more powerful INMARSAT radio disrupts the Iridium radio up to 10–800 m (33–2,625 ft) away.[106]
InMarch 2014,Malaysia Airlines Flight 370 disappeared with 239 passengers and crew en route fromKuala Lumpur toBeijing. After turning away from its planned path and disappearing from radar coverage, the aircraft'ssatellite data unit remained in contact with Inmarsat's ground station inPerth via the IOR satellite (Indian Ocean Region, 64° East). Theaircraft used Inmarsat'sClassic Aero satellite phone service. Analysis of these communications by Inmarsat and independently by other agencies determined that theaircraft flew into the southernIndian Ocean and was used to guidethe search for the aircraft.[107][108] In conferences given by French engineers and pilots Jean-Luc Marchand and Patrick Blelly stated that the company tried to reach, several hours after plane disappeared, the airplane by ringing the satellite phone onboard.[109]
The attacks onUS Embassies inNairobi (Kenya) andDar es Salaam (Tanzania) in summer of 1998 were organized parly through satellite communications.[110]Osama bin Laden asked one of his staff to acquire aMini-M satellite phone in London, using cash of about US$10,000 to US$15,000 which had been sent to severalAl-Qaeda members.[111] The terrorist used it to make about 900 satellite calls, but stopped using it in 1998 when several newspapers reported that theCIA wastapping it.[112] His phone number, which was 00-873-682505331,[113] (00 for international, 873 for Indian Ocean based sat coverage, 682505331 as the line) was disclosed during a trial ofbombings in US embassy in Kenya.[114] His satellite phone was described as the size and appearance of a laptop.[115]
25 May 2023: Revised statutory deadline following extension
This article incorporates text from this source, which is in thepublic domain.The first Inmarsat-6 spacecraft is scheduled for launch with Mitsubishi Heavy Industries (MHI) at the end of 2021 with the second to follow in 2022.
SpaceX successfully launched Inmarsat's latest I-6 F2 satellite successfully launched last night from launch pad SLC-40 at Cape Canaveral Space Force Station in Florida.
| Main articles | |
|---|---|
| Hardware | |
| Satellite radio /TV | |
| Broadcast companies | |
| Relay satellite companies | |
| Satellite manufacturers | |
| Trade organizations | |
| Lists | |
