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Radio Aurora Explorer: A Mission Overview

机译:Radio Aurora Explorer:任务概述

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The primary objective of the Radio Aurora Explorer mission is to study plasma instabilities that lead to magnetic field aligned irregularities of electron density in the lower polar ionosphere (80-400 km). These irregularities are known to disrupt communication and navigation signals. The Radio Aurora Explorer mission uses a bistatic radar configuration; the spacecraft is the radar receiver and the transmitters are several worldwide incoherent scatter radars of which the primary radar is located in Poker Flat, Alaska. The satellites are 3 kg, university-class CubeSats with a primary payload of a direct-conversion radar receiver operating in the frequency range from 426 to 510 MHz. The satellite bus has a novel configuration of processing, attitude control, and antenna design that met the physical constraints of the CubeSat form factor and the one-year schedule constraint imposed by launch dates. Two satellites have launched: RAX-1 on 19 November 2010 onboard a Minotaur-Ⅳ rocket from Kodiak, Alaska, and RAX-2 on 28 October 2011 onboard a Delta-Ⅱ rocket from Vandenberg U.S. Air Force Base, California. RAX-2 has detected and measured irregularities during multiple experiments over Alaska and Canada. Preliminary analysis indicates unprecedented characterization of the irregularities.
机译:Radio Aurora Explorer任务的主要目的是研究等离子体不稳定性,该不稳定性会导致下极电离层(80-400 km)中磁场对准的电子密度不规则性。已知这些不规则会破坏通信和导航信号。 Radio Aurora Explorer任务使用双基地雷达配置;航天器是雷达接收器,发射器是全球范围内的数个非相干散射雷达,其主要雷达位于阿拉斯加的Poker Flat。卫星为3千克大学级CubeSat,具有直接转换雷达接收器的主要有效载荷,其工作频率为426至510 MHz。卫星总线具有新颖的处理,姿态控制和天线设计配置,可以满足CubeSat外形尺寸的物理限制以及发射日期施加的一年时间表限制。已经发射了两颗卫星:2010年11月19日从阿拉斯加科迪亚克(Kodiak)发射的Minotaur-Ⅳ火箭上发射RAX-1,2011年10月28日从加利福尼亚范登堡美国空军基地的Delta-Ⅱ火箭上发射RAX-2。 RAX-2已在阿拉斯加和加拿大进行的多次实验中检测到并测量了违规行为。初步分析表明,这种不规则现象具有前所未有的特征。

著录项

  • 来源
    《Journal of Spacecraft and Rockets》 |2014年第1期|39-47|共9页
  • 作者单位

    University of Michigan, Ann Arbor, Michigan 48109;

    Center for Geospace Studies, SRI International, Menlo Park, California 94025-3493;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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