Innovative nanosat will test space software

Designing Ops-Sat at ESA's Concurrent Design Facility

Designing Ops-Sat at ESA's Concurrent Design Facility

A new ESA nanosat aiming for a 2015 launch plans to provide a platform to test software in space.

Space software rarely runs the latest operating systems, languages or interfaces. It is selected for its proven, rock-solid reliability rather than its use of the latest and newest programming technologies. For example ESA is still using the Packet Utilisation Standard to control their satellites, which was defined in 1994.

There are many reasons why satellites continue to use decades-old, tried-and-trusted software based on older technical standards. It’s not because satellite designers and builders aren’t innovative. On the contrary, some of the best ideas in software development come from the space industry.

“However, with mission-critical software, there’s a lot of risk-aversion, which is very understandable,” says Mario Merri, Head of the Mission Data Systems Division at ESOC.

“No one wants to use new and possibly problematic software on a multi-million-euro mission in space.”

Traditionally, one of the major barriers to providing updated software for use in space has been the lack of opportunities to test new tools, systems and procedures.

It’s difficult and expensive to replicate in-orbit conditions using an Earth-bound simulator, yet this is precisely the tough standard that new space software must meet.

That’s where an innovative nanosatellite design developed at ESA promises to help satellite designers, ground engineers and spacecraft and component manufacturers. Dubbed Ops-Sat, for Operations Satellite, it is specifically designed to allow controlled testing and validation of critical onboard and ground software.

The design calls for a CubeSat configuration, measuring just 30x10x10 cm and costing far less than a traditional scientific or Earth observation satellite.

“The secret behind the Ops-Sat design is that the satellite is easily recoverable from the effects of ‘buggy’ software and we use commercial, off-the-shelf processors to provide increased computing power compared to normal spacecraft,” says Dave.

“We can completely replace the entire onboard software suite with new and fresh code more or less daily, allowing developers to troubleshoot their products in a real but safe environment.”

Ops-Sat has generated considerable interest from European industry, which sees the possibilities for demonstrating new concepts, ideas and products that presently have difficulty breaking into mainstream spacecraft design.

This could accelerate innovation and lower costs in the field of satellite control.

Source ESA

Missions of KSAT2

 

1. Study on Forcast of Localied Downpour and TornadoIn-orbit experiments of an original observation method of atmospheric water vapor.
2. Take Earth Live Images from Space
Ku-band high-speed data transmission, one shot / a few seconds.
3. Basic Experiments for LEO Positioning Satellites
Frequency and phase synchronization between a ground-base system and a satellite.
4. Orbit Determination Experiments with Radio Interferometer
Essential item for nano-satellite orbiting at very low earth orbit.
5. Satellite Tracking Experiment at Very Low Earth Orbi Evaluation of Earth’s atmosphere to the satellite.
6. Verification of Pantograph-type Extending Boom in Space
The boom was originally designed and is fit for compact satellites.
7. Messages of Encouragement from Space to Japan. Hand-lettered messages and heart warming pictures, especially from children responsible for the future.

Communication

Dual uplink, Dual downlink and a beacon signal.

– Frequency and Transmissio Rate –
Frequency Band Moduration Method Transmission Rate Purpose
Uplink UHF Band F2D 1 kbps  Commands
S Band G2D 1 kbps  Command (Backup)
Downlink S Band G1D 200 ksps  HK Data
Ku Band G1D 1 Mbps or Carrier  Image and Beacon

  # Coding by viterbi algorithm is applied to S-band downlink data. 

Main body of the satellite has a shape of 10 cm Cube, and its mass will be 1.5 kg. An expanding boom for attitude control and two solar paddles are attached to the main body.

Rubber Chicken Flies into Solar Radiation Storm

NASA report that last month, when the sun unleashed the most intense radiation storm since 2003, peppering satellites with charged particles and igniting strong auroras around both poles, a group of high school students in Bishop, California, knew just what to do.

They launched a rubber chicken with a pair of badges to register radiation levels attached to her knitted spacesuit.

Watch NASA Camilla SDO – Chaos at 119,000 feet (March 10, 2012)

Read the full NASA story at http://science.nasa.gov/science-news/science-at-nasa/2012/19apr_camilla/

Camilla on Facebook http://www.facebook.com/NASA.Camilla.SDO

Flabob Airport students talk to Space Station

NASA astronaut Don Pettit KD5MDT

NASA astronaut Don Pettit KD5MDT

It was 13 months of preparation for 10 minutes of conversation – but what a conversation!

On Thursday morning, a select group of students from the Flabob Airport Preparatory Academy spent about 10 minutes on an amateur radio teleconference call with the International Space Station, asking astronaut Donald Pettit KD5MDT a variety of questions about his duties and the effects of prolonged weightlessness on the human body.

Press-Enterprise report:

“My heart was just pounding,” said Brittany Cain, a 17-year-old junior at the school. “It was just amazing to be able to ask the question. But I was so nervous, I can’t remember his answer.”

The contact was made possible by Clint Bradford K6LCS an amateur radio operator and the liaison between NASA, the school and amateur radio. Bradford worked with NASA to get Thursday’s call approved.

“Our hope is that through this experience the students will keep questioning and keep looking skyward,” Bradford said. “They should never stop asking questions about space.”

Bradford also made the connection to amateur radio operator Claudio Ariotti IK1SLD who connected to the space station as it passed over Italy. The radio feed was sent to Flabob by telephone.

Read the full Press-Enterprise story at
http://www.pe.com/local-news/local-news-headlines/20120419-jurupa-valley-students-question-real-life-rocket-man.ece

Watch Flabob-ARISS – BEFORE the Contact

Watch the Press-Enterprise video of the contact

NASA sets date for Flabob Airport ARISS contact
http://www.southgatearc.org/news/april2012/nasa_sets_date_for_flabob_airport_ariss_contact.htm

Amateur Radio on the International Space Station (ARISS) http://ariss.rac.ca/

28th National Space Symposium April 16-19, 2012

Martin Sweeting G3YJO 2012 Image Credit SSTL

Martin Sweeting G3YJO Image Credit SSTL

Among those attending the 28th National Space Symposium in Colorado April 16-19 was Sir Martin Sweeting G3YJO.

He took part in the ‘Societal Benefits – Space Applications in Emerging Regions’ panel.

Space News reports:

Overseas markets are expanding as more nations embrace space for communications, environmental monitoring, resource management and disaster response, according to members of an April 17 panel discussing space applications in emerging nations.

Emerging programs in Asia, Latin America, the Middle East and Africa offer opportunities to the industry but come with some challenges, not the least of which is cooperation and cultural understanding between governments. Panel members discussing the trend were Tim Deaver, vice president of market development, government solutions, at SES World Skies, David Hartshorn, secretary general of the London-based Global VSAT Forum, and Sir Martin Sweeting, founder and chairman of U.K.-based Surrey Satellite Technology.

“Space is essential to play a part fully” on the international stage, Sweeting said. While some might argue it is an extravagance in nations often burdened with dire poverty, new wisdom has taken hold that space can bolster economies and level playing fields.

Pictures and videos of the 28th National Space Symposium can be seen at http://www.nationalspacesymposium.org/

Space News report http://www.spacenews.com/satellite_telecom/120418-nations-embracing-space-apps.html

50 years of the UK in space

This is a year of momentous milestones in the life of Britain, ranging from Charles Dickens’ bicentenary to the Queen’s Diamond Jubilee. Adding further significance to 2012 is the UK space industry, which has a golden anniversary to mark: the launch of the nation’s first satellite, Ariel-1, on April 26th 1962.
In the news
Built by NASA in collaboration with a team of British academics, Ariel-1 was the world’s first international satellite, and constituted the foundation of the UK space sector – now annually worth £7.5 billion to the UK economy, and supportive of some 70,000 jobs across a variety of the nation’s industries.
Ariel-1
To mark this special anniversary, the UK Space Agency is presenting a two-day space symposium on the 26th and 27th of April, at the home of their active co-hosts, the Science Museum. Now a year old, the UKSA has much to be enthusiastic about; and the symposium will commemorate past achievements, and explore the future direction of Britain’s thriving space industry – with contributions from some of the leading players in the sector today.

The UK Space Agency was founded to provide strategic support to the sector, while making significant investments through its 230m civil space budget. Almost 90 per cent of the agency’s budget currently goes to the European Space Agency, for collaborative pan-European space projects. This strategy is helping to secure Britain’s role as a key player in the development of Europe’s space going future.

SSTL is a case in point; with its current role in the European Commission’s European GNSS program. The company will assemble eight batches of satellite navigational payloads, on top of the 14 it is already building. In addition, the UK government recently announced that it would invest in the development of NovaSAR, SSTL’s small radar satellite. The space agency’s work signifies government recognition of the groundbreaking work in space technology by UK universities, research centres, and companies like SSTL.

Ariel-1

SSTL is itself of historical significance, as the creator of the first ‘talking satellite’, UoSAT-1 in 1981. Their current work in nanosatellite and microsatellite technology, is a far cry from the ancestral Ariel-1, which had the aesthetics of a 1950’s ‘sci-fi’ fantasy space craft: multiple, sphere-like radio antennas protruding from a cylindrical body; multiple solar arrays; inertia booms to control the craft’s spin, and a 100-minute tape to store a single orbit’s worth of data.

Perhaps the most dramatic contrast in SSTL’s current work, to the ‘little-green-man’ craft that was Ariel-1, is its Smartphone satellite STRaND-1. This unique nanosatellite is designed around a Google Nexus One, Android Smartphone. In a playful nod to classic science-fictions’ dream of a space-going future, is the inclusion of an App on the phone that tests out the film Alien’s infamous slogan: ‘In space no-one can hear you scream’.

Providing SSTL’s contribution to the UK Space Agency’s symposium, will be Shaun Kenyon, lead System Engineer on the aforementioned, nanosatellite STRaND-1. On the 26th, 
he will discuss the importance of flagship projects and small satellites to UK space technology. Shaun’s insights will help to put in context the retrospective significance of Ariel-1, as he expounds his belief in the importance of satellite technology and low cost access to space for commercial endeavours.

Robin Wolstenholme