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SALSAT - Spectrum AnaLysis SATellite

Artistic Impression of SALSAT during an overflight in the low earth orbit
Lupe

   

The Mission

The research project SALSAT (Spectrum AnaLysis SATellite) develops, launches and operates a nanosatellite with a payload for in-orbit spectrum analysis. The primary payload is the spectrum-analyzer SALSA, which has been developed and space-qualified within the recent research activities of the chair of space technology. SALSAT is based on the TUBiX10 satellite bus which has been developed at the Technische Universität (TU) Berlin. An existing flight spare satellite of the S-Net mission is utilized and modified to accommodate the specific needs of the SALSAT mission. The primary focus of the project consists of the design of Hard- and Software components as well as the operation of SALSAT in orbit. Scientific data for the analysis of the global spectrum use is gathered and processed throughout the mission lifetime. The data is used to generate heatmaps of the global spectrum use as well as to detect harmful interference. Study groups of the ITU for spectrum analysis for small satellites are also accompanied in the scope of the SALSAT mission.

The payloads

The SALSAT mission consists of the primary payload SALSA, which is a spectrum analyzer for the analysis of the spectrum utilization from the low earth orbit. SALSA solely analyzes the portion of the spectrum which is utilized for satellite communication (e.g. amateur radio bands). The following frequency bands will be analayzed:

  • VHF: 145.80 – 174.00 MHz
  • UHF: 400.15 – 420.00 MHz
            435.00 – 438.00 MHz
  • S band: 2 075.00 – 2 095.00 MHz
                 2 255.00 – 2 275.00 MHz

The spectrum utilization will be collected and analyzed within these frequencies. As a result a global heatmap of the spectrum utilization over time and location will be generated.

The SALSAT mission will also feature multiple secondary payloads:

  • Laser-Retroreflectors for ground-based high accuracy orbit determination
  • Optical paylaoad for verification of the attitude control system of SALSAT
  • Novel Fluiddynamic Actuator (FDA) for attitude control of nanosatellites
  • Modified S-Link RF transceiver for full-duplex communication in the S band

The SALSAT Team

SALSAT (Spectrum AnaLysis SATellite) project team
project lead

systems engineer

software engineer

electronics engineer

student assistant

Preparatory research projects

As previously mentioned the SALSAT project conducts in-orbit spectrum analysis in defined RF bands. The chair of space technology at the TU Berlin conducted preparatory work within the scope of two completed research projects (REPIN and SALSA). These projects established the theoretical and practical foundation for the SALSAT mission. The utilized satellite bus (TUBiX10) has been developed and space qualified within the S-Net project. This project also utilizes the SLink RF transceiver. The secondary payload for attitude control is developed, qualified and manufactured within the FDA project.

Technical Parameter

This paragraph contains the main technical parameters of SALSAT. It shall be mentioned that the exact parameter evolve during the development process. The table below represents the technical specifications at the stage of the Preliminary Design Review (PDR) in October 2018.

SALSAT: Technical Paramet
Parameter
Value
Orbit
approx. 500 - 600 km (non-SSO)
Launch Date
07/2020 (TBC)
Design Lifetime
>1 year
Mass
12.00 kg 
Volume
240 x 240 x 240 mm³
Communication
UHF (TM/TC), S band (UL/DL of payload data)
Attitude Control
3-axis control with MEMS sensors, magnetorquers and reaction wheels
Payload
Spectrumanalyzer (SALSA), optical camera, Fluiddynamic actuation system (FDA), S-band transceiver (SLINK) and Laser reflectors
SALSAT system overview
Lupe

   

Publications

Yoon, Zizung and Frese, Walter and Briess, Klaus (2019). in-orbit differential drag control experiment on nanosatellite cluster: analysis and flight results. 12th IAA Symposium on small satellites for Earth observation


Frese, Walter and Yoon, Zizung and Briess, Klaus (2019). S-Net first year in orbit: verification of a nanosatellite network in s band. 12th IAA Symposium on small satellites for Earth observation


Lim, Yeerang and Yoon, Zizung and Frese, Walter (2019). novel nanosatellite cluster deployment strategy by precise orbit insertion – design, verification and flight results. 12th IAA Symposium on small satellites for Earth observation


Buscher, Martin; Balke, Alexander; Brieß, Klaus (2018). Potential New Allocations for Small Satellite TT&C: Prospects of Success at ITU WRC-19. Proceedings the Small Satellites & Services Symposium 2018 - 4S 2018


Buscher, Martin; Großhans, Jens; Balke, Alexander; Lohse, Alexander; Maaß, Alexander; Brieß, Klaus (2018). RF Spectrum Analysis Missions at TU Berlin. Proceedings the Small Satellites & Services Symposium 2018 - 4S 2018


Frese, Walter and Yoon, Zizung and Briess, Klaus (2018). communication network in LEO: in-orbit veri?cation of intersatellite link by nanosatellite cluster S-Net. Proceedings of the International Astronautical Congress (IAC)


Barschke, Merlin F.; Werner, Philipp; Gordon, Karsten; Lehmann, Marc; Frese, Walter; Noack, Daniel; Grunwaldt, Ludwig; Kirchner, Georg; Wang, Peiyuan and Schlepp, Benjamin (2018). Initial Results from the TechnoSat in-orbit demonstration mission. presented at the 31st AIAA/USU Conference on Small Satellites


Noack, Daniel; Barschke, Merlin F.; Werner, Philipp and Brieß, Klaus (2018). FDA in space – First in-orbit results of a fluid dynamic attitude control system. presented at the Small Satellites Systems and Services Symposium


Gordon, Karsten; Barschke, Merlin F. and Werner, Philipp (2018). Upgrading TUBiX20 – bringing TechnoSat flight experience into the TUBIN mission. presented at the Small Satellites Systems and Services Symposium


Dinkelaker, Aline N.; Kaparthy, Akash; Reher, Sven; Bawamia, Ahmad; Kürbis, Christian; Smol, Robert; Christophe, Heike; Wicht, Andreas; Werner, Philipp; Bartholomäus, Julian; Rotter, Sven; Jördens, Robert; Barschke, Merlin F. and Krutzik, Markus (2018). Optical quantum technologies for compact rubidium vapor-cell frequency standards in space using small satellites. presented at the 6th Reinventing Space conference


Barschke, Merlin F.; Werner, Philipp and Kapitola, Sascha (2018). BEESAT-3 commissioning – better late than never. presented at the 69th International Astronautical Congress


Bartholomäus, Julian; Barschke, Merlin F. and Lehmann, Marc (2018). Development of a single-channel wildfire detection algorithm for the TUBIN mission. presented at the 69th International Astronautical Congress


Barschke, Merlin F.; Gordon, Karsten; von Keiser, Philip; Lehmann, Marc; Starke, Mario and Werner, Philipp (2018). Initial orbit results from the TUBiX20 platform. presented at the 69th International Astronautical Congress


Starke, Mario; Barschke, Merlin F.; von Keiser, Philip (2018). A Modular hardware diagnosis framework for small spacecraft. presented at the 69th International Astronautical Congress


Hufgard, Fabian; Lengowski, Michael; Barschke, Merlin F.; Harmansa, Nicholas; Klinkner, Sabine and Brieß, Klaus (2018). Preliminary study of an academic micro-satellite formation mission for meteoroid trajectories determination and dust mass flow measurement. presented at the Small Satellites Systems and Services Symposium


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Zusatzinformationen / Extras

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Fachgebietsleitung

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

Grant No.:

50 YB 1805