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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
SALSAT satellite overview
Lupe

The SALSAT Team

SALSAT (Spectrum AnaLysis SATellite) project team
project lead

systems engineer

software engineer

electronics engineer

communications engineer

student assistant

student assistant

student assistant

SALSAT Team
Lupe

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. 550 - 600 km (SSO)
Launch Date
Q2/2020
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, 3-axis Fluid-Dynamic Actuation system (FDA), S-band transceiver (SLINK) and Laser reflectors
SALSAT Mission Patch
Lupe
SALSAT Mission on Social Media (Twitter, LinkedIn)
Lupe

   

Publications

Sascha Weiß, Falk Kempe and Klaus Brieß (2013). GPS Tracking on the Three-Axis Stabilized Picosatellite BEESAT-4. 7th Pico and Nano Satellite Workshop on "Technologies for Small Satellite Research"


Sascha Weiß, Falk Kempe and Klaus Brieß (2015). Mission objectives of the picosatellite BEESAT-4. 8th Pico and Nano Satellite Workshop


Sascha Weiß, Sascha Kapitola, Nikolas Korn, Sebastian Trowitzsch and Klaus Brieß (2016). BEESAT-2 to BEESAT-4: In flight demonstration of attitude control to GPS based positioning and orbit determination. 4S Symposium Malta


Sascha Weiß, Sascha Kapitola and Klaus Brieß (2016). BEESAT-4: 3-Axis attitude control and GPS based positioning and orbit determination. IAC


Sascha Kapitola, Sascha Weiß and Klaus Brieß (2017). Flight Experience and Operations with the Cubesat BEESAT-4. IAA


Sascha Kapitola, Sascha Weiß, Nikolas Korn and Klaus Brieß (2016). Von BEESAT-2 zu BEESAT-4: Weiterführende Nutzung als In-Orbit Testplattform. DLRK


Sascha Kapitola, Sebastian Grau and Sascha Weiß (2019). Automated Operations of BEESAT-9: A CubeSat with a Fluid-Dynamic Actuator and GPS receiver. IAA


S. Kulas, Ch. Vogt, A. Resch, J. Hartwig, S. Ganske, J. Matthias, D. Schlippert, T. Wendrich, W. Ertmer, E.M. Rasel, M. Damjanic, P. Weßels, A. Kohfeldt, E. Luvsandamdin, M. Schiemangk, Ch. Grzeschik, M. Krutzik, A. Wicht, A. Peters, S. Herrmann, C. Lämmerzahl (2017). Miniaturized lab system for cold atom experiments in microgravity. Microgravity Science and Technology, 37.


Rießelmann, Jens; Arlt, Franziska; Dornburg, Lars; Köhler, Kay; Weise, Jana; Brieß, Klaus (2009). SEPSAT – A nanosatellite to observe parameters of space weather. Proceedings of the 7th IAA Symposium on Small Satellites for Earth Observation


Rießelmann, Jens; Weise, Jana; Brieß, Klaus (2013). Thermal Architectures and Interface Ideas for Modular Serviceable Satellites. Proceedings of the 64th International Astronautical Congress


Lappöhn; Regenbrecht; Bergmann; Schmid; Rickmers (2012). STERN - Raketenprogramm für Studenten. Proceedings of the German Aerospace Congress 2012


Reibe, Mathias; Jäckel, Klaus; Barschke, Merlin F. and Jonglez, Clément (2019). A Modular Family of High Data Rate SDR Transceivers. Proceedings of the 33nd AIAA/USU Conference on Small Satellites


Karsten Großekatthöfer; Christian Raschke (2011). Support of ACS development and test by dynamic simulation models. IAA Symposium on Small Satellites for Earth Observation


Noack, Daniel; Ludwig, Jonathan; Brieß, Klaus (2014). Laboratory investigation of a fluid-dynamic actuator designed for CubeSats. Acta Astronautica. Elsevier, 78-82.


Noack, Daniel; Ludwig, Jonathan; Brieß, Klaus (2014). AN ANGULAR RING STORAGE DEVICE FOR SMALL SATELLITES BASED ON A LIQUID METAL ACTUATOR. 65th International Astronautical Congress


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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