Aerospace Engineering and Technology (항공우주기술)

Korea Aerospace Research Institute (한국항공우주연구원)
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Analysis of ionospheric payloads for Mars exploration

화성 전리층 관측 탑재체 성능 분석

  • Received : 2013.05.13
  • Accepted : 2013.07.01
  • Published : 2013.07.01
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Abstract

In solar system, Mars which has the most similar environment with the Earth has been steadily studied for the purpose of habitable environment for the future manned exploration and settlement. During the daytime, Martian ionosphere can be used for the ground-ground communications between lander and rover through the reflection of the radio wave from ionosphere. In addition, researches about Martian ionosphere provide the link of revolution of water and atmosphere. Martian ionospheric observations were performed by the occultation experiments onboard Mariner, Mars, Viking series during early Martian explorations as well as recent Mars Global Surveyor. Low frequency radar and plasma analyzer are on board Mars Express and Viking-1, 2 lander obtained the only vertical plasma density profile during their entry phase. In this paper, we studied the characteristics of scientific payloads observing Martian ionosphere and then analyzed the usability of ionospheric research according to the communication and climate on Mars.

태양계 내에서 지구와 가장 흡사한 환경을 가진 화성은 향후 인류의 정착을 목적으로 이에 필요한 화성 환경 연구가 꾸준히 이루어지고 있다. 낮 시간 화성 전리층은 전파의 반사를 통해 착륙선과 로버의 지상-지상 통신에 활용될 수 있다. 또한 화성 전리층 정보는 화성의 물 및 대기 진화와 연관된 정보를 제공한다. 이런 정보들은 전파통신 및 기후 연구에 활용된다. 화성 전리층은 화성탐사 초기의 Mariner, Mars, Viking 시리즈와 최근의 Mars Global Surveyor의 전파엄폐 방식으로 주로 관측되었으며 Mars Express에는 전파엄폐방식 기기 외에도 저주파 레이더, 플라즈마 분석기가 탑재되었고 Viking Lander의 현장측정 자료가 활용되어 왔다. 본 연구는 국내 우주탐사 기반기술 확보를 위해 탐사선 통신에 영향을 줄 화성 전리층의 관측기기 선정에 대비하여 해외사례를 분석하였다.

Keywords

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