Novel mission concepts for polar coverage: An overview of recent developments and possible future applications

Matteo Ceriotti, Benjamin Diedrich, Colin McInnes

Research output: Contribution to journalArticle

12 Citations (Scopus)
85 Downloads (Pure)

Abstract

The paper provides a survey of novel mission concepts for continuous, hemispheric polar observation and direct-link polar telecommunications. It is well known that these services cannot be provided by traditional platforms: geostationary satellites do not cover high-latitude regions, while low- and medium-orbit Sun-synchronous spacecraft only cover a narrow swath of the Earth at each passage. Concepts that are proposed in the literature are described, including the pole-sitter concept (in which a spacecraft is stationary above the pole), spacecraft in artificial equilibrium points in the Sun-Earth system and non-Keplerian polar Molniya orbits. Additionally, novel displaced eight-shaped orbits at Lagrangian points are presented. For many of these concepts, a continuous acceleration is required and propulsion systems include solar electric propulsion, solar sail and a hybridisation of the two. Advantages and drawbacks of each mission concept are assessed, and a comparison in terms of high-latitude coverage and distance, spacecraft mass, payload and lifetime is presented. Finally, the paper will describe a number of potential applications enabled by these concepts, focusing on polar Earth observation and telecommunications.
Original languageEnglish
Pages (from-to)89-104
Number of pages21
JournalActa Astronautica
Volume80
Early online date2 Apr 2012
DOIs
Publication statusPublished - Nov 2012
Event62nd International Astronautical Congress 2011 - Cape Town, South Africa
Duration: 3 Oct 20117 Oct 2011

Keywords

  • continuous polar coverage
  • high latitude observation
  • Earth observation
  • polar meteorology
  • mission design

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