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Another world first for Artemis: a laser link with an aircraft
December 19, 2006Artemis, the European Space Agency Advanced Relay and Technology Mission Satellite, successfully relayed optical laser links from an aircraft in early December. These airborne laser links, established over a distance of 40 000 km during two flights at altitudes of 6000 and 10 000 metres, represent a world first.
The relay was set up through six two-way optical links between a Mystîre 20 equipped with the airborne laser optical link LOLA (Liaison Optique Laser Aéroportée) and the SILEX laser link payload on board ARTEMIS in its geostationary orbital position at 36 000 kilometres altitude: a feat equivalent to targeting a golf ball over the distance between Paris and Brussels.
These tests were made by Astrium SAS (France), the prime constructor for both LOLA and SILEX, as part of the airborne laser optical link programme conducted by the DGA (French MoD procurement agency) from its Flight Test Centre at Istres, in the south of France. The ESA ground station of Redu, Belgium, also contributed to this success by managing the Artemis SILEX payload operations.
This clearly demonstrates the feasibility of an optical link between an airborne carrier and a geostationary satellite.
Previously, in November 2001, Artemis made a world premiere by establishing a laser link with the French Earth Observation satellite SPOT-4: imaging data was sent by SPOT-4 using a laser beam as signal carrier to Artemis and from there by radio waves to the ground. This unprecedented link-up between satellites in space was done in the framework of the SILEX development, an innovative payload which provides a laser beam as a data signal carrier.
More recently, since November 2005, Artemis has been relaying optical signals from KIRARI, the Japanese Optical Intersatellite Communications Engineering Test Satellite. This first ever two-way optical communication illustrated the value of this technology for the development of future Earth observation systems.
Optical technology has several advantages for data relay applications, including the capability to provide high data rates with low mass, low power terminals, combined with secure, interference-free communications. Earth observation can truly benefit from this new way of transmitting data around our planet.
On a daily basis Artemis is also relaying data in the Ka-band from Envisat, the ESA earth observation satellite, providing, since 2002, a comprehensive view of the Earth's oceans, land, atmosphere and ice caps.
This new world first between a satellite and an aircraft is another demonstration of what can be achieved in Europe thanks to the ESA ARTES technology programme.
European Space Agency
Previously, in November 2001, Artemis made a world premiere by establishing a laser link with the French Earth Observation satellite SPOT-4: imaging data was sent by SPOT-4 using a laser beam as signal carrier to Artemis and from there by radio waves to the ground. This unprecedented link-up between satellites in space was done in the framework of the SILEX development, an innovative payload which provides a laser beam as a data signal carrier.
More recently, since November 2005, Artemis has been relaying optical signals from KIRARI, the Japanese Optical Intersatellite Communications Engineering Test Satellite. This first ever two-way optical communication illustrated the value of this technology for the development of future Earth observation systems.
Optical technology has several advantages for data relay applications, including the capability to provide high data rates with low mass, low power terminals, combined with secure, interference-free communications. Earth observation can truly benefit from this new way of transmitting data around our planet.
On a daily basis Artemis is also relaying data in the Ka-band from Envisat, the ESA earth observation satellite, providing, since 2002, a comprehensive view of the Earth's oceans, land, atmosphere and ice caps.
This new world first between a satellite and an aircraft is another demonstration of what can be achieved in Europe thanks to the ESA ARTES technology programme.
European Space Agency
Artemis Current Events and Artemis News RSSArtemis assists emergency services to fight Portuguese fires
Fire fighters tackling the blazes that have ravaged Portugal are doing so with the aid of a satellite data-link. For the first time, ESA's satellite Artemis has been used to support an emergency request under the International Charter on "Space and Major Disasters". Portugal's civil protection unit (SNPC) was able to receive information and groups of images that showed the scope of the fires. The data, transmitted from ESA's Earth observation satellite, Envisat, via the Artemis data-relay spacecraft in geostationary orbit, were received in near real-time at the ESA data processing centre, located at ESRIN near Rome. On 4 August ESA's Earthwatching service requested a full resolu
ESA and NASDA complete successful data relay tests between Artemis and Adeos II
ESA INFO 08-2003. Another successful inter-satellite link achieved with Artemis! After a world premiere laser link with Spot 4 in November 2001 and a relay with Envisat last month, Artemis has transmitted data from the Japanese Earth observation satellite Adeos II. ESA and NASDA, the Japanese space agency, had agreed to cooperate on a data relay service between ESA's Artemis geostationary spacecraft and Nasda's Adeos II in low Earth orbit, using ESA's ground station in Redu, Belgium. In this framework, ESA and NASDA performed a series of tests from 27 to 29 March to demonstrate the system's performance and the operational links between the Adeos II team in Tsukuba, Japan, and the Artemis
Microbiology Today February 2003 issue
DNA50 and microbes This special issue commemorates the 50th anniversary of the publication of the structure of DNA by Watson and Crick. Microbes have always played an important role in DNA research and this issue, which features topics in modern molecular microbiology and microbial genomics, shows the enormous amount of progress made in the last 50 years.
Artemis finally reaches operational orbit
ESA PR 07-2003. Artemis has finally reached geostationary orbit, some 36 000 km above the Earth, at 21.5°E. This announcement would, if all had gone to plan, been made just a few days after lift-off on 12 July 2001. Now, eighteen months and some serious brainstorming further on, the most advanced ESA telecommunications satellite ever commissioned is on station, ready to play its part in the development of new telecommunications services. It will be remembered that Artemis (which stands for Advanced Relay and Technology Mission) was left in a lower than intended orbit when the Ariane 5 upper stage malfunctioned. It was even feared at the time that the entire mission might be lost. But th
Artemis, one year after launch
A mission brought back from the edge, a world premiere in space, European engineers grappling with the challenge of a launch malfunction: such are the results of Artemis`s first, adventurous year in space. For Artemis is still alive, doggedly advancing towards its working position in geostationary orbit, with ion engines not originally designed for such a task. Already it has demonstrated a new way of relaying data between satellites, premiering laser links in space. One year ago, Artemis was widely thought to be as good as lost; now, the spacecraft promises to perform its mission for advanced telecommunications. Exactly one year ago, due to a malfunction in its upper stage, Ariane 5 left ES
ESA develops a smarter way to travel through space
As scientists demand more from space missions travelling to other worlds and beyond, traditional rocket technologies are beginning to show shortcomings. In response, ESA are helping to develop a new type of rocket engine, known as solar-electric propulsion, or more commonly, an ion engine, that can mark a whole new era of space exploration. Solar-electric propulsion is ESA`s new spacecraft engine. It does not burn fuel as chemical rockets do; instead the technique converts sunlight into electricity via solar panels and uses it to electrically charge heavy gas atoms, which accelerate from the spacecraft at high velocity. This drives the spacecraft forwards. In a chemical rocket, burning the f
Artemis on target for geostationary orbit
Slowly but surely - Artemis heads towards its working position. The experimental ion propulsion system designed to test a new form of technology for station-keeping on future satellites is performing well in its new role to get ESA`s Artemis to geostationary orbit and save the day. The Artemis (Advanced Relay and TEchnology MISsion) communications satellite, built by Alenia Spazio as prime contractor, was launched by Ariane 5 last summer. After launch the spacecraft was left in a far lower than intended orbit, with insufficient conventional propellant even to raise it to its nominal orbit. Adapting the use of the ion propulsion system combined with unconventional operation of the chem
Lab-on-a-chip News: A self-organizing nanoparticle-based molecular sieve is developed to identify and separate DNAs or cells
Because living organisms contain millions of different molecules, identifying or separating any single one of these from their natural environment in order to carry out research work or perform diagnoses is quite like looking for a needle in a haystack. A number of molecular separation technologies are of course available, and are used by laboratories on a daily basis, but they are often unwieldy and costly. Scientists the world over are therefore attempting to develop a new generation of analytic devices, known as labs-on-a-chip, where all the technological phases of laboratory work are integrated into speedy automated procedures, in what can be deemed to be a single sample to diagnosis ste
Europe's environmental eye soars into orbit
The eagerly awaited launch of ESA's Envisat environmental monitoring satellite took place in Kourou, French Guiana, today at 22:07:59 hrs Kourou time (02:07:59 hrs CET). Envisat's spectacular night-time launch also marked the return to business for Europe's Ariane 5 launcher. Lift-off was witnessed by dozens of cheering engineers, scientists and project members at the launch site and at ESA centres across Europe. Rising into a clear sky, the Ariane 5 propelled the Envisat towards a lofty vantage point some 800 km above the Earth's surface. Envisat - the most ambitious Earth observation satellite - follows in the footsteps of ESA's successful ERS-1 and ERS-2 missions launched in the 1990s.
Artemis starts its journey to final orbit
Thanks to ion propulsion, the Artemis mission is turning near-defeat into a success story. Nominal operations could start this summer, with ESA`s satellite, manufactured by Alenia Spazio as prime contractor (I), playing a significant role in the pursuit of high technology and advanced telecommunications. On 12 July 2001, 30 minutes after lift-off from Europe`s spaceport in Kourou, French Guiana, it became apparent that the Ariane 5 launcher had propelled the Artemis satellite into a transfer orbit that was lower than expected, with the apogee (the most distant point from Earth) at only 17 000 km rather than the nominal 36 000 km. Under normal circumstances a conventional satellite does not
More Artemis Current Events and Artemis News Articles
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DC Universe Classics Series 4 Action FigureArtemis by Mattel Artemis as Wonder Woman inspired by her appearances in the DC Comics universe. Artemis is the variant/chase figure for Wave 4 with a modified Wonder Woman body sculpt and unique head sculpt. Accessories include bow, hip holster with arrows (non-removeable), lasso (non-removeable) and right leg of the Collect & Connect figure, Despero. Articulation at the neck, shoulders, biceps, elbows, wrists, torso, waist, hips, thighs, knees and ankles. |
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Artemis: A Kydd Sea Adventure (Kydd Sea Adventures) by Julian Stockwin (Author) In this latest installment of the thrilling naval adventure series, Thomas Payne Kydd and sea-mate Nicholas Renzi are set to sail all the way to the fabled Far East aboard the 18th-century crack frigate Artemis. In this great age of fighting sailing ships, Kydd's voyage promises to be a perilous undertaking, but not even shipwreck, mutiny, or a confrontation with a mighty French frigate manages to thwart them. It is only when Kydd receives an urgent message from home—one that threatens to cut short his career and trap him on shore forever—that the real journey begins. |
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Artemis Fresh Mix Small Breed Adult Formula by Artemis Company Important Facts about Small Breed Puppies and Dogs - defined as dogs that weigh 1 to 20 pounds at maturity. Artemis Small Breed is a scientifically formulated food that is made to meet the nutritional requirements of small breed puppies and dogs and takes into account their particular breed characteristics. |
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Artemis Woman Healing Gems Microdermabrasion by Artemis Woman Home microdermabrasion system with 2.5oz jar clear quartz gem therapy facial scrubs reveals soft, fresh, youthful skin underneath. Includes brush, sponge and massager attachments for thorough exfoliation and pore cleansing feature with nose and face cup attachments to loosen, lift and remove impurities from the pores. |
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Artemis: Virgin Goddess of the Sun & Moon--A Comprehensive Guide to the Greek Goddess of the Hunt, Her Myths, Powers & Mysteries by Sorita D'Este (Author) The goddess Artemis is best known today as a goddess of the hunt and of the new moon, yet to those who worshipped at her ancient temples and sanctuaries she was far more than just that. To them she was a powerful and complex goddess whose influence spread far and wide throughout the ancient world. Her worship brought together the powers of life and death, she aided in childbirth and she protected and cared for those dear to her, whilst she also delighted in her hunting skills, killing both animals as well as those who offended her. She was worshipped and celebrated as a goddess of childbirth, women, song, dance and of wild animals. As the daughter of the Titan goddess Leto by the Olympian Father god Zeus, Artemis would prove herself from the moment of her birth, by assisting in the... |
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Gravity by Artemis Artemis (Performer) Artemis' husky, heavenly alto floats over dreamy organic soundscapes and smart, dynamic beats. Combining elements of trip-hop, drum and bass, breakbeat and poptronica, Artemis fuses a hybrid sound that can take you from a rocking club to a late night lounge and everywhere in between. |
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Artemis Fresh Mix Small Breed Adult Dog Food 4lb by Artemis Company Artemis pet food is an holistic approach to pet food. There is no artifical coloring, dye, or bleach. Thus occurrence of slight color variation may occur. INGREDIENT: Chicken, turkey, chicken meal, salmon meal, pearled barley, whole brown rice, chicken fat (preserved with mixed tocopherols), oatmeal, millet, potatoes, dried egg, tomato pomace, salmon, flaxseed, natural chicken flavor, salmon oil (a source of DHA), choline chloride, green tea extract, barley grass extract, dried chicory root, kelp, carrots, peas, apples, tomatoes, blueberries, spinach, cranberry powder, rosemary extract, parsley flake, yucca schidigera extract, L-Carnitine, Enterococcus faecieum, Lactobacillus casei, Lactobacillus acidophilus, Saccharomyces cerevesiae fermentation solubles, dried Aspergillus oryzae... |
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Artemis Plant Colored Pencils by Artemis These beautiful pencils have leads colored by natural plant extract. The ten colors are medium soft and agreeably mellow. They inspire the imagination and can be used for drawing and sketching. Colors include carmine red, vermillion, yellow, green, black, brown, blue-violet, orange, blue, purple. |
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Artemis Fowl: Time Paradox, The (new cover) by Eoin Colfer (Author) When Artemis Fowl's mother contracts a life-threatening illness, his world is turned upside down. The only hope for a cure lies in the brain fluid of the silky sifaka lemur. Unfortunately, the animal is extinct due to a heartless bargain Artemis himself made as a younger boy.     Though the odds are stacked against him, Artemis is not willing to give up. With the help of his fairy friends, the young genius travels back in time to save the lemur and bring it back to the present. But to do so, Artemis will have to defeat a maniacal poacher, who has set his sights on new prey: Holly Short.     The rules of time travel are far from simple, but to save his mother, Artemis will have to break them all.and outsmart his most cunning adversary yet: Artemis Fowl, age... |
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Schwinn Artemis Adult Women Micro Bicycle Helmet (Colors May Vary) by Pacific Cycle |
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