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Landing-Site Dispersion Analysis and Statistical Assessment for the Mars Phoenix Lander

机译：火星菲尼克斯着陆器着陆点扩散分析和统计评估

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摘要

The Mars Phoenix Lander launched on 4 August 2007 and successfully landed on Mars 10 months later on 25 May 2008. Landing ellipse predicts and hazard maps were instrumental in selecting safe surface targets for Phoenix. Hazard maps were based on terrain slopes, geomorphology maps, and automated rock counts from the Mars Reconnaissance Obiter's High Resolution Imaging Science Experiment images. The expected landing dispersion was used in conjunction with the hazard maps, which led to the selection of Phoenix's surface target The same statistical assessment was performed with the actual landing dispersion predictions determined during operations in the weeks, days, and hours before landing and compared with criteria levied by the project in order to determine whether or not to perform entry aim-point targeting maneuvers. The statistical analysis was also used by the Phoenix project to verify the effectiveness of a preplanned maneuver menu and to calculate the probability of future maneuvers. An assessment of the statistical distribution of Phoenix landing points (Monte Carlo results) was performed to justify the Phoenix assumption of a bivariate Gaussian distribution, which showed that this assumption did not play a role in Phoenix landing downrange of the expected landing site.
机译：火星凤凰号着陆器于2007年8月4日发射升空，并于10个月后于2008年5月25日成功登陆火星。着陆椭圆形预测和危险地图有助于选择凤凰号的安全地面目标。危险图基于地形坡度，地貌图和来自火星侦察轨道飞行器的高分辨率成像科学实验图像的自动岩石计数。将预期的着陆散布与危险图结合使用，从而选择了Phoenix的表面目标。对着陆前的几周，几天和几小时内在操作过程中确定的实际着陆散布预测进行了相同的统计评估，并与项目征收的标准，以确定是否执行进入目标点目标演习。 Phoenix项目还使用统计分析来验证预先计划的机动菜单的有效性，并计算出未来机动的可能性。对菲尼克斯着陆点的统计分布（蒙特卡罗结果）进行了评估，以证明双变量高斯分布的菲尼克斯假设，这表明该假设在菲尼克斯着陆点的预期着陆点降落范围内没有作用。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2011年第5期|p.784-797|共14页
  • 作者

    Eugene P. Bonfiglio; Douglas Adams; Lynn Craig; David A. Spencer; Ray Arvidson; Tabatha Heet;

  • 作者单位

    Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109;

    Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109;

    Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109;

    Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109;

    Washington University, St. Louis, Missouri 63130;

    Washington University, St. Louis, Missouri 63130;

  • 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
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