Termin:Chaotic-Congress-Cinema-28C3 Nr. 08

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Chaotic Congress Cinema Nr. 8

Beginn:

29.02.2012 20:00

Ende:

29.02.2012 22:00


Needs to be there, but does not need to be seen by a visitor Yes

Wir schauen uns die Aufzeichnung von Congress-Vorträgen an. Du bist herzlich eingeladen, in den Clubräumen im Mexikoring 21 aufzutauchen und mit uns die Talks anzuschauen und zu diskutieren. Es wird Getränke und Knabberkram zu moderaten Preisen geben. Falls Du kein CCC-, CCCHH- oder Attraktor e.V.-Mitglied bist, macht das überhaupt nichts: Alle Gäste sind gern gesehen. :-)

Weitere Informationen unter Chaotic Congress Cinema.

Building a Distributed Satellite Ground Station Network - A Call To Arms

Hackers need satellites. Hackers need internet over satellites. Satellites require ground stations. Let's build them!

As proposed by Nick Farr et al at CCCamp11, we - the hacker community - are in desperate need for our own communication infrastructure. So here we are, answering the call for the Hacker Space Program with our proposal of a distributed satellite communications ground station network. An affordable way to bring satellite communications to a hackerspace near you. We're proposing a multi-step approach to work towards this goal by setting up a distributed network of ground stations which will ensure a 24/7 communication window - first tracking, then communicating with satellites. The current state of a proof of concept implementation will be presented.

This is a project closely related to the academic femto-satellite movement, ham radio, Constellation@Home.

The area of small satellites (femto-satellite <0.1 kg up to mini- satellite 100-500 kg) is currently pressed forward by Universities and enables scientific research at a small budget. Gathered data, both scientific and operational, requires communication between satellites and ground stations as well as to the final recipients of the data. One either has to establish own transmission stations or rent already existing stations. The project “distributed ground station” is an extension to the project which will offer, at its final expansion state, the ability to receive data from satellites and relay them to the final recepients. It is therefore proposed that a world-wide distributed network of antennas is to be set up which will be connected via the internet allowing the forwarding of received signals to a central server which will in turn forward signals to further recepients. Individual antennas will be set up by volunteers (Citizen Scientists) and partner institutions (Universities, institutes, companies). The core objective of the project is to develop an affordable hardware platform (antenna and receiver) to be connected to home computers as well as the required software. This platform should enable everyone to receive signals from femto-satellites at a budget and in doing so, eradicating black patches where there is currently no ground station to receive signals of satellites passing over-head. Emphasise is put on contributions by volunteers and ham radio operators who can contribute both passively by setting up a receiver station or actively by shaping the project making it a community driven effort powered by open-source hardware and applications.

Purposes The distributed ground stations will enable many different uses. Using distributed ground stations one could receive beacon signals of satellites and triangulate their position and trajectory. It would therefore be possible to determine the kepler elements right after launching of a new satellite without having to rely on official reports made at low frequency. Beacon tracking is also not limited to just satellites but can be used to track other objects like weather balloons and areal drones and record their flight paths. Additionally, beacon signals (sender ID, time, transmission power) could be augmented with house-keeping data to allow troubleshooting in cases where a main data feed is interrupted. Details regarding the protocol and maximum data packet length are to be defined during the feasibility study phase. Furthermore, distributed ground stations can be used as "data dumping" receivers. This can be used to reduce load on the main ground station as well as to more quickly distribute data to final recipients. The FunCube project, an out-reach project to schools, is already using a similar approach. Another expansion stage would be increasing the bandwidth of the individual receivers. As a side-effect, distributed ground station could also be used to analyse meteorite scattering and study effects in the ionosphere by having a ground-based sender with a known beacon signal to be reflected off meteorites and/or the iononosphere and in turn received by the distributed ground stations. Depending on the frequency used further applications in the field of atmospheric research, eg. local and regional properties of the air and storm clouds, can be imagined. Depending on local laws and guidelines, antennas could also be used to transmit signals. The concept suggests the following expansion stages:


  1. . Feasibility study for the individual expansion stages
  2. . Beacon-Tracking and sender triangulation
  3. . Low-bandwidth satellite-data receiver (up to 10 Kbit/s)
  4. . High-bandwidth satellite-data receiver (up to 10 Mbit/s)
  5. . Support for data transmission Each stage is again split up into
  sub-projects to deal with hardware and software design and develoment,
  prototyping, testing and batch/mass production, Network The networking
  concept demands that all distributed ground stations are to be
  connected via the internet. This can be achieved using the
  Constellation platform. Constellation is a distributed computing
  project used already for various simulations related to aerospace
  applications. The system is based on computation power donated by
  volunteers which is combined to effectively build a world-wide
  distributed super-computer. The software used to do this is BOINC
  (Berkeley Open Infrastructure for Network Computing) which also offers
  support for additional hardware to eg. establish a sensor network.
  Another BOINC-project is the Quake Quatcher Network which is using
  accelleration sensors built into laptops or custom USB-dongles to
  detected earthquakes. Constellation could be enhanced to allow use of
  the distributed ground station hardware. Constellation is an academic
  student group of the DGLR (german aerospace society) at Stuttgart
  University and is supported by Rechenkraft.net e.V and Selfnet e.V..
  Ham radio and volunteers Special consideration is given to the ham
  radio community. Femto-satellites make use of the ham radio bands in
  the UHF, VHF, and S-Band range. As a part of the ham radio community
  ham radio operators should be treated as part of the network. Ham
  radio operators hold all required knowledge about the technology
  required to operate radio equipment and are also well distributed
  world-wide. To also make the system attractive to volunteers, hardware
  should be designed in a way that allows manufacturing and distribution
  on a budget. All designs should also be made public to allow own and
  improved builds of the system by the community. The hardware should be
  designed to be simple to use correctly and hard to be used wrong.
  Supporters > [1] Constellation Plattform, aerospaceresearch.net
  constellation [2] shackspace Stuttgart, www.shackspace.de References
  [1] IRS Kleinsatelliten, Universität Stuttgart, kleinsatelliten.de [2]
  Constellation Plattform, aerospaceresearch.net/constellation [3]
  BOINC, Berkely University, boinc.edu [4] Quake Catcher Network,
  qcn.stanford.eu [5] DGLR Bezirksgruppe Stuttgart, stuttgart.dglr.de
  [6] Rechenkraft.net e.V., rechenkraft.net [7] Selfnet e.V., selfnet.de



What is WhiteIT and what does it aim for?

Why you probably want to be concerned about it and similiar alliances.

This talk will be about the WhiteIT project, initiated by Mr Schünemann, German Minister of Interior in the state of Lower Saxony.

The WhiteIT project is concerned with combating the online- distribution of child abuse material. WhiteIT tries to develop tools and processes to cooperatively suppress the disemination and (re-)distribution of said material.

During the Talk the lecturer will try to encourage some open source intelligence. So please consider bringing a laptop, netbook or tablet with you to help gather and collect certain informations right away.

Being involved with the WhiteIT project, the lecturer will use this opportunity to speak freely about his concerns regarding certain aspects of the endeavour. The talk will try to explain some of the projects aims as well as technical tools and processes developed and why he thinks this also concerns you as well.

Although the talk will mainly be concerned with WhiteIT and its members, it will also be of concern for other nationals as there are some global players involved.

The Talk will be somewhat interactive asking you to crowdsource certain information that the lecturer could not get hold off, so please bring a laptop, netbook or tablet with you to be able access a wiki/etherpad.

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