{"id":560,"date":"2014-09-01T12:53:21","date_gmt":"2014-09-01T11:53:21","guid":{"rendered":"http:\/\/sophia.estec.esa.int\/gtoc_portal\/?page_id=560"},"modified":"2022-02-04T12:13:13","modified_gmt":"2022-02-04T11:13:13","slug":"gtoc-8","status":"publish","type":"page","link":"https:\/\/sophia.estec.esa.int\/gtoc_portal\/?page_id=560","title":{"rendered":"GTOC 8 – Very-Long-Baseline Interferometry"},"content":{"rendered":"

\"jpl_logo\"This edition was organised by Anastassios Petropoulos of the Jet Propulsion Laboratory Outer Planets Mission Analysis Group. The announcement was officially made on the 18th of March 2015, and can be found\u00a0here<\/a>.<\/p>\n

In a Nutshell<\/h5>\n

The theme chosen for this competition is “high-resolution mapping of radio sources in the universe using space-based Very-Long-Baseline Interferometry (VLBI)”. Three spacecraft depart from the Earth and need to perform interferometric measurements of\u00a0one of 420\u00a0radio sources. A measurement can be\u00a0made when the three spacecraft lie\u00a0on a plane whose normal points towards the radio source. Moon gravity assists and low-thrust propulsion can be used to target each interferometric measure.<\/p>\n

The files sent by JPL to describe the problem are:<\/p>\n

    \n
  1. List of registered teams<\/a><\/li>\n
  2. Problem statement<\/a><\/li>\n
  3. Problem data:\u00a0List of Radio Sources<\/a><\/li>\n
  4. Requested output file format –\u00a0Trajectory Format<\/a>,\u00a0Observations Format<\/a><\/li>\n
  5. Final Rankings<\/a><\/li>\n<\/ol>\n
    The Winners<\/h5>\n

    Led by Dario Izzo, the team from the European Space Agency’s Advanced Concepts Team\u00a0(ACT) and JAXA’s ISAS won this edition.\u00a0Most team members were\u00a0either ACT members or former ACT members.<\/p>\n