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The VELOX-C1 mission is a Singaporean experimental microsatellite mission to study tropical climates.

VELOX-C1 will use of a special technique known as radio occultation and advanced algorithms, to obtain weather data such as the upper atmospheric temperature, humidity and pressure, which are useful for long term climate studies. Radio occultation makes use of the radio signals transmitted from the GPS satellites 20,000 km above the Earth. Using specially-designed GPS receivers, VELOX-CI can detect these signals for a short duration, even if there is no line of sight due to the bending of these signals by the atmosphere.

Alternate Names

  • 41171
  • VELOX2

Facts in Brief

Launch Date: 2015-12-16
Launch Vehicle: PSLV
Launch Site: Sriharikota, India
Mass: 123 kg

Funding Agency

  • Unknown (Singapore)


  • Technology Applications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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