Automated extraction of Saturn's winds and comparison with 3D simulations of Saturn's two polar vortices and transient vortices

自动提取土星风并与土星两极涡旋和瞬态涡旋的 3D 模拟进行比较

• 批准号: 1009907
• 负责人: Philip Marcus
• 金额: $ 21.4万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1009907&HistoricalAwards=false
• 关键词: Automated; extraction; Saturn; winds; comparison

This project centers on the development and application of a new, automated algorithm to measure the speeds of winds in Saturn's observable weather layer. The PI and a graduate student will improve on their technique of Advected Corrected Correlation Image Velocimetry (ACCIV); this algorithm automatically tracks the movement of cloud features between pairs of in-situ images obtained from spacecraft, and extracts velocity fields with much higher efficiency and resolution than existing automated or manual methods. They will apply this analysis to Cassini images of Saturn, particularly in the region of the polar vortices, and extract velocities with uncertainties of only 1 meter per second. They will produce a public, user friendly version of ACCIV and make it available to the planetary science and broader research communities.

该项目的重点是开发和应用一种新的自动算法来测量土星可观测天气层中的风速。PI和一名研究生将改进他们的平流校正相关图像测速技术（ACCIV）;该算法自动跟踪从航天器获得的现场图像对之间的云特征的运动，并以比现有的自动或手动方法更高的效率和分辨率提取速度场。他们将把这种分析应用于卡西尼号的土星图像，特别是在极涡区域，并提取速度，其不确定性仅为每秒1米。他们将制作一个公共的、用户友好的ACCIV版本，并将其提供给行星科学和更广泛的研究团体。