Low-frequency observations using high-altitude balloon experiments (LOBE)

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Abstract

The frequency range between 0.3 and 30 MHz remains one of the last unexplored frequency ranges in radio astronomy. However, Earth-based observations at these wavelengths are severely impeded, due to man-made radio frequency interference (RFI) and atmospheric opacity. To overcome this impediment, various space-based radio astronomy studies have been proposed in the past decade, notably the OLFAR (Orbiting low Frequency Antennas for Radio Astronomy) study, which proposed a satellite swarm for ultra-long wavelength observation. To realize this mission, various technological challenges of a satellite swarm are currently being addressed, particularly antenna design, navigation, communication, distributed processing, and overall system and mission design. Secondly, the RFI levels at various altitudes from Earth is currently unknown, which is a hindrance in general for radio astronomy. To this end,we propose the use of high-altitude ballooning experiments to validate OLFAR sub-systems in representative conditions (e.g., harsh temperature and vibrations). Furthermore, these ballooning experiments will measure the RFI in the ultra-long wavelength spectrum at various altitudes from Earth. Our project is termed LOBE (Low-frequency observations using high-altitude Balloon Experiments), and in this paper, we present an overview of the science
objectives, payload, and the technological and programmatic challenges of the LOBE project.
Original languageEnglish
Title of host publication70th International Astronautical Congress (IAC), Washington D.C., United States
PublisherIAF/AIAA
Number of pages6
Publication statusPublished - Oct 2019
Event70th International Astronautical Congress, IAC 2019 - Washington, United States
Duration: 21 Oct 201925 Oct 2019
Conference number: 70
http://www.iafastro.org/publications/iac-papers/

Conference

Conference70th International Astronautical Congress, IAC 2019
Abbreviated titleIAC 2019
CountryUnited States
CityWashington
Period21/10/1925/10/19
OtherThe proceedings will be provided to all participants on
the first day of the Congress.
Internet address

Keywords

  • high-altitude balloons
  • space-based radio astronomy
  • ultra-long wavelength observation
  • array of balloons
  • satellite swarms

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  • Cite this

    Rajan, R. T., Sundaramoorthy, P., Vertegaal, C. J. C., Montagne, A., Karunanithi, V., Verma, M., Bentum, M., & Verhoeven, C. (2019). Low-frequency observations using high-altitude balloon experiments (LOBE). In 70th International Astronautical Congress (IAC), Washington D.C., United States [IAC-19-A7.3.11] IAF/AIAA.