Архив метки: University of Rome

2 guest lectures: Making Space for Everyone + Re-Architecting Space Systems: Infrastructure Changes Everything

1U CubeSat ESTCube-1, developed mainly by the students from the University of Tartu, carries out a tether deployment experiment on the low Earth orbit. Image courtesy of Wikipedia

1U CubeSat ESTCube-1, developed mainly by the students from the University of Tartu, carries out a tether deployment experiment on the low Earth orbit. Image courtesy of Wikipedia

For those who are interested in the rewarding challenges offered by space systems engineering and the need to popularize these highly complex technologies and make them accessible, we invite you to back-to-back guest lectures by Dr. Rick Fleeter (Brown University and La Sapienza, Rome). “Only with infrastructure can we put space in reach of everyone,” Dr. Fleeter claims.

1. The Long and Winding Road: Making space for Everyone

2. Re-Architecting Space Systems: Infrastructure Changes Everything

When: Oct 20, 9 am – 12 pm

Where: Hypercube, 3rd floor, big classroom

For more details and info please contact: Y.Kraskovskaya@skoltech.ru

 

Abstracts:

1. The long and winding road: making space for everyone

 I founded AeroAstro 26 years ago, having begun working on small amateur satellites in the ’70s, to build satellites in a different way, a more efficient way.  The technologies enabling low cost space or “Microspace” take advantage of scaling to smaller size, mass, dimension and complexity as is true of every engineered product. Still not only is Microspace not widely understood nor accepted but beyond its engineering challenges lies another greater obstacle, the mission mindset, our agenda in space.

Through executive level discussion of the system engineering of the mission, it’s architecture and subsystems I will illustrate the contrasts between conventional and low cost approaches to space.  The obstacles to making the benefits of space accessible to a much broader builder and user base will also be addressed along with some unreliable but hopefully interesting predictions of how the future of accessible space will unfold.

 

2. Re-Architecting Space Systems: Infrastructure Changes Everything

We are immersed in low cost, high performance products.  Smart phones communicate globally and access the internet for 99€, a car to drive across Europe for under 7000€, 2000€ for a small box (a heat pump) that heats your home all winter and cools it in summer, and wide screen viewing of films, sports, news, for the price of a 300€ television and a digital terrestrial antenna.

Infrastructure makes all that possible.  The 1100 km drive from Vienna to Rome without roads, without bridges, without filling and service stations without restaurants, without cell phone or radio, without lighting or even a map becomes just you, your vehicle, a compass and 1100 km of hills, mountains, rivers and forests.  You will need amphibious and off-road capability, tools for clearing trees and boulders, sufficient fuel for 1100 km of off-road range (figure thousands of liters), all the food, clothing, camping, survival and medical gear, weapons for killing animals for food and possibly self defense, to survive probably a month completely out of touch with civilization.  Plus a compass, sextant, star maps, highly accurate time keeping.  If something breaks, you must carry redundant systems and repair tools, backups of everything.  You will need a crew that knows how to use all that stuff and a management structure to run the enterprise.

This is how every space mission has been done since Sputnik..

Our low cost gadgets are merely interfaces to an infrastructure so rich and so ubiquitous that we have ceased to even notice it.  Until we launch into space, where there is none.  Every satellite, even a student-built 1 kg hold it in your hand cubesat, must communicate 1000 km back to it’s own ground station.  It must measure its own orbit, its own attitude.  With no place to plug-in, it must make and store all of its own electrical power.  It is vulnerable to space debris because there is no public health system to keep space clean.

What would space look like if instead of remaining the land of rugged individual pioneers, it became a community welcoming new inhabitants with a range of services they could simply plug into?  It would be much cheaper to inhabit, much simpler to do things in.  It would no longer require a team of experts working for sophisticated companies to get to and to operate in.  Communications would be no harder than your home wifi connection. Navigation like driving with a GPS.

What I have learned in a career working to lower the cost of spacecraft, is that space is still incomparably more expensive, and its cost and complexity keep most of the world out.  Only with infrastructure can we put space in reach of everyone.

 

Dr Rick Fleeter, guest speaker at the Skoltech Seminar on Satellite Systems

Dr Rick Fleeter, guest speaker at the Skoltech Seminar on Satellite Systems

Speaker introduction:

Dr. Rick Fleeter is Adjunct Associate Professor of Engineering at Brown University,Providence, RI, USA, and Visiting Professor in the faculty of aerospace engineering at La Sapienza Rome, Italy. In 1988 he founded and was for 21 years President of the small satellite company AeroAstro (USA), during which time he also co-founded Encounter 2001 and created the International Small Satellite Organization (ISSO) and Space Horizons.

He has been responsible for the development of over 25 miniature satellites ranging from 1 to 110 kg. He created and produces the annual one day Space Horizons emerging technologies Workshop at Brown University. Rick is a founder and partner in Space.Point, a space systems database company based in Rome.

Rick has written the only two books dedicated to small satellite technology and management, Micro Space Craft and The Logic of Microspace, and coauthored Space Program Management (all with Springer). He has contributed microspace chapters to encyclopedias and textbooks including Space Mission Engineering, Space Mission Analysis and Design and The Wiley Encyclopedia of Aerospace Engineering. Rick holds PhD and AB degrees in Engineering and Economics from Brown University and MSc in aerospace engineering from Stanford University. Rick was born in Cleveland, Ohio, USA, September 7, 1954 and holds US and German Citizenship and passports. He is a native English speaker fluent in Italian

* The Skolkovo Institute of Science and Technology (Skoltech) is a private graduate research university in Skolkovo, Russia, a suburb of Moscow. Established in 2011 in collaboration with MIT, Skoltech educates global leaders in innovation, advances scientific knowledge, and fosters new technologies to address critical issues facing Russia and the world. Applying international research and educational models, the university integrates the best Russian scientific traditions with twenty-first century entrepreneurship and innovation.

Double Seminar: 1. Satellite Telecommunication systems: a Case Study 2. Satellite networks: the Skyway to the Internet

Satellite flare, Moon trail and star trails. Image courtesy of MomentsForZen

Satellite flare, Moon trail and star trails. Image courtesy of MomentsForZen, FLickr

The Systems Engineering class invites you to 2 guest seminars by Prof. Michele Luglio, University of Rome Tor Vergata and the NITEL Consortium. The seminars will focus on Satellite Networks and Telecommunication Systems.

When: 14 October 2014, 09:00

Where: Hypercube building big classroom, 3rd floor, Skolkovo Innovation Center

Seminar 1 Satellite telecommunication systems: a case study worth to apply systems engineering

Abstract

Satellite systems conceived, designed, realized and deployed for telecommunication purposes are complex enough to deserve a systems engineering approach for all their life cycle. In fact, several complex aspects must be considered for the successful implementation of such systems.

Firstly, the mechanical aspects concerning the orbital choice with related implications in terms of coverage, propagation channel, costs of injection in orbit, dimension of the satellite. Secondly,  the platform over which to develop the electronic part of the satellite.Currently available spacecraft are limited and each has its own constraints. Third aspect is the telecommunication, in strict sense, technology developments. They concern the communication standard (modulation, coding, multiple access, network protocols, etc.), the power needed to satisfy Bit Error Rate requirements (primary quality parameter in any telecommunication system), amd the service and user requirements that are then mapped into system requirements.

Last but not least, the ground segment is crucial to identify and satisfy the target market segment both in terms of performance and costs. Definitively, satellite systems can be classified as Systems of Systems because they involve mechanics, electronics, computer science, telecommunications, market and business models.

The seminar will introduce the main characteristics of constellations (GEO, LEO, MEO, HEO) utilized for telecommunications. Then, the system components will be described: Space segment (Payload), Ground segment (NOC, User terminal) and the integration with terrestrial networks will be addressed. Finally, currently operational services and applications will be addressed to approach the requirements definition (Throughput, Quality of Service, BER, etc.) which will be dealt with regard to a specific study case.

Seminar 2 Satellite networks: the skyway to the Internet

Abstract

Satellite systems can typically play an important role in the information society thanks to their intrinsic capability to serve large areas, to cover where terrestrial systems are not available, to guarantee service continuity in case of disaster, and to even bridge the digital divide. The advent of Internet in daily life in the last decade (social networks, games, shopping, banking, education, medical assistance, etc.) and the challenge of the new requirements (full mobility and ubiquity) and paradigms (Cloud Computing, Software Defined Networks, etc.) increase the importance of this component of the network and challenge researchers to provide improved performance.

The use of P network protocols implies an adaptation to the new paradigms, taking into account the characteristics of the satellite infrastructure.

In particular, the transport protocol TCP (Transmission Control Protocol), which is based on a growing-decreasing window concept to perform congestion control, which is then greatly dependent on the Round Trip Delay (RTT), is negatively affected by a satellite due to the huge delay. Standard TCP over satellite links limits capacity utilization. It is responsible of the difference between the assigned and the experienced capacity.

This protocol is of paramount importance because it is used for almost all Internet applications and recently its use was enlarged to applications traditionally served by UDP (User Datagram Protocol), such as streaming, because it is provided through http protocol.

We can state that the Internet needs satellites to enhance coverage, to guarantee long range mobility, to ensure connection when and where terrestrial facilities are not present or out of order, but also that Satellites need Internet to distribute data efficiently and in standard way, to provide security also to Earth Observation data. Furthermore, satellite systems must tackle new paradigms such as Cloud Computing, Software Defined Network, Network Function Virtualization, Full Mobility, and Security.

The seminar will first address the role that satellite systems can play in the global Internet. Next, it will present the main characteristics of satellite systems having an impact on TCP performance. Specific solutions to improve performance will be presented. Finally, a perspective overview of services and applications provided by satellite systems in the near future will be presented.

 

For more info and registration please contact: 

Speaker Presentation: 

Prof. Michele Luglio received the Laurea degree in Electronic Engineering at University of Rome “Tor Vergata”. He received the Ph.D. degree in telecommunications in 1994.

From August to December 1992 he worked, as visiting Staff Engineering at Microwave Technology and Systems Division of Comsat Laboratories (Clarksburg, Maryland, USA).

He received the Young Scientist Award from ISSSE ‘95.

From 1995 to 2004 he was research-teaching assistant at University of Rome “Tor Vergata”.

In 2001 and 2002 he was visiting Professor at the Computer Science department of University of California Los Angeles (UCLA) to teach Satellite Networks class.

At present he is associate professor of telecommunication at University of Rome “Tor Vergata”. He works on designing satellite systems for multimedia services both mobile and fixed. He teaches “Satellite Telecommunications” and “Telecommunications basics”.

He works with ESA, ASI, EC on designing innovative satellite communications systems and coordinates the laboratory of the Satellite Multimedia Group at University of Rome Tor Vergata (www.tlcsat.uniroma2.it).

He is author of more than 130 international publications.

* The Skolkovo Institute of Science and Technology (Skoltech) is a private graduate research university in Skolkovo, Russia, a suburb of Moscow. Established in 2011 in collaboration with MIT, Skoltech educates global leaders in innovation, advances scientific knowledge, and fosters new technologies to address critical issues facing Russia and the world. Applying international research and educational models, the university integrates the best Russian scientific traditions with twenty-first century entrepreneurship and innovation.

 

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