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S-Net

S-Net – S-Band Network for Cooperative Nanosatellites
Point of Contact

News

  • Info for radio amateur: Mike Rupprecht
  • 2018.02.22: Intersatellite communication successful.
  • 2018.02.19: SLink has been activated. S-band downlink is next step.
  • 2018.02.07: TLEs: 43186, 43187, 43188, 43189. Relative distance is very stable.
  • 2018.02.01: Ground contact w. all four S-NET was established. We are in LEOP. 
  • 2018.02.01: Successful launch of four S-NET satellites with Soyuz / Fregat.

The Mission

The objective of the S-Net mission is to investigate and demonstrate the inter-satellite communication technology within a distributed an autonomously operating nanosatellite network. As space born systems have become an essential element in facing global challenges such as climate change, disaster management and maritime systems monitoring, rapid response and low cost systems are in high demand.

A key technology to increase the operational efficiency of distributed satellite systems via formations or even autonomous swarms is the miniaturizing of intersatellite communication technology. In cooperation with IQ wireless GmbH, TU Berlin developed an S-band transceiver (SLink) with 100 kbps crosslink and 1 Mbps downlink capability suitable for accommodation in nanosatellites.

S-NET
Parameter
Value
Mission Objectives
S-band inter satellite communication with nanosatellites
Number of Satellites
4
Orbit Height
< 650 km circular
Launch Date
Q4 2017 (tbc)
Design Lifetime
1 year
Mass
< 8.5 kg
Volume
240 x 240 x 240 mm³
Communication
UHF (satellite bus)
S-band (payload)
Attitude Control
Thre axis stabilization using MEMS sensors and magnetic torquers (momentum wheel optional)
Payload
S-band transceiver (SLINK) for ISL and up/downlink Laser reflector for high precision measurement Optical camera

Videos

Short docu about mission TV1:

The mission (image video):

Encapsulation of Fregat upper stage at cosmodrome Vostochny:

Report (successful launch and first contact):

Publications

Binder, Matthias; Yoon, Zizung; Briess, Klaus (2017). Attitude Determination with Failure Tolerant Sensor Arrays Suitable for Nanosatellites. 11th IAA Symposium on Small Satellites for Earth Observation


Frese, Walter; Briess, Klaus; Yoon, Zizung; Voigt, Siegfried (2017). Inter-satellite Communication with Nanosatellites using Adaptive Coding and Modulation. 5. Nationale Konferenz "Satellitenkommunikation in Deutschland"


Kirchner, Georg; Grunwaldt, Ludwig; Neubert, Reinhard; Koidl, Franz; Barschke, Merlin; Yoon, Zizung and Fiedler, Hauke (2013). Laser Ranging to Nano-Satellites in LEO Orbits: Plans, Issues, Simulations. presented at the 18th International Workshop on Laser Ranging


Barschke, Merlin F.; Yoon, Zizung and Brieß, Klaus (2013). TUBiX - The TU Berlin Innovative Next Generation Nanosatellite Bus. presented at the 64th International Astronautical Congress


Yoon, Zizung; Frese, Walter; Bukmaier, Alexander; Briess, Klaus (2013). System Design of an S-Band Network of Distributed Nanosatellites. CEAS Space Journal. Springer.


Barschke, Merlin F.; Yoon, Zizung; Baumann, Frank; Roemer, Stephan and Brieß, Klaus (2013). Nanosatellite activities at TU Berlin. Proceedings of the 2nd IAA Conference on University Satellites Missions, 69-76.


Yoon, Zizung; Frese, Walter; Bukmaier, Alexander; Briess, Klaus (2013). Mission Design of a S-Band Network of Cooperative Nanosatellites. International Workshop on Spacecraft Constellation and Formation Flight


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Press releases

  • Ingenieurskunst aus Berlin-Charlottenburg im All (01.02.2018) [mehr...]
  • DeSK cooperates with TU Berlin (11.10.2014) [more...]
  • Fast communication in space (15. Okt. 2012) [more...]

Zusatzinformationen / Extras

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Auxiliary Functions

Fachgebietsleitung

Prof. Dr.-Ing. Klaus Brieß
Tel. +49 30 314-21339
Room F 515

Grant No.:

50 YB 1225