Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Polar explorers use satellite broadband to stay in touch

08.05.2006


A team of young explorers from the Climate Change College are on a ten day field trip, participating in ESA’s CryoSat validation experiment on the Greenland Ice Sheet. To stay in touch, the team is using Inmarsat’s Broadband Global Area Network (BGAN), a technology development supported by ESA.

Led by Dutch polar explorer Marc Cornelissen, the students have set up camp on the ice and are assisting with experiments which will be used to validate results from the CryoSat mission. Ground measurements made by the students will be compared with those obtained from an aircraft carrying the ASIRAS radar altimeter to simulate CryoSat measurements.

The CryoSat-2 mission is expected to be launched in March 2009 and will answer the question of whether global climate change is causing the polar ice caps to shrink, a contentious issue in the global warming debate. CryoSat will do this by monitoring precise changes in the thickness of the polar ice sheets and floating sea ice.



On 3 May, the team travelled by helicopter from Ilulissat to a data point designated T05 located on the ice sheet. In daytime temperatures of minus 20 degrees centigrade, the students are conducting field work in the area around T05 before departing again for Ilulissat on 10 May.

To allow the team to stay in touch with media organizations around the world by phone, e-mail and video link and also to update their web logs, Inmarsat has provided free use of one of their newest satellites and Radio Holland have loaned the expedition a BGAN terminal manufactured by Hughes, one of several companies now offering this equipment.

The Inmarsat-4 F2 satellite located at 53 degrees west became operational in late April 2006. It is one of a constellation of two satellites, with a third held on the ground as a reserve. The constellation offers coverage over 85% of the Earth’s surface and 98% of its population. Ilulissat, where a trial took place earlier this week, is located at 69 degrees north, well within range of Inmarsat’s maximum northerly reach of 80 degrees.

Broadband Global Area Network (BGAN)

BGAN, the payload aboard the Inmarsat satellite which is making communications for the expedition possible, was conceived in response to the demand for mobile broadband data. Previous solutions found it difficult to combine high bandwidth with wide coverage, reliability and portability. The Broadband Global Area Network (BGAN) system, designed to operate with the Inmarsat-4 satellites, provides breakthrough services that meet all of these requirements.

Mobile users can make simultaneous voice and broadband data connections, before packing up and moving on in the time it takes to stow a laptop PC and BGAN satellite terminal.

BGAN’s introduction fills in coverage gaps left by limited terrestrial networks. It is accessed by using a small, highly portable satellite terminal, which is quick to set up and low-cost. In many instances, using BGAN airtime is actually cheaper than international voice and GPRS roaming on cellular networks.

Inmarsat became interested in supporting the expedition after a suggestion from ESA. Establishing reliable broadband satellite communication so far north and under such extreme conditions demonstrates both the capabilities of the BGAN system and the ruggedness and portability of the terminals.

Inmarsat has been working with ESA since 2003 to bring the benefits of BGAN to the maritime, aeronautical and land-vehicular environments. This is being carried out in a follow-on project called BGAN extension.

Dominique Detain | alfa
Further information:
http://www.esa.int/esaTE/SEMHOF8ATME_index_0.html

More articles from Communications Media:

nachricht New Technologies for A/V Analysis and Search
13.04.2017 | Fraunhofer-Institut für Digitale Medientechnologie IDMT

nachricht On patrol in social networks
25.01.2017 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO

All articles from Communications Media >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

Im Focus: Wafer-thin Magnetic Materials Developed for Future Quantum Technologies

Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.

Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...

Im Focus: World's thinnest hologram paves path to new 3-D world

Nano-hologram paves way for integration of 3-D holography into everyday electronics

An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

How herpesviruses win the footrace against the immune system

26.05.2017 | Life Sciences

Water forms 'spine of hydration' around DNA, group finds

26.05.2017 | Life Sciences

First Juno science results supported by University of Leicester's Jupiter 'forecast'

26.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>