C-Band Polarimetric Radar Studies During CLEOPATRA

CLEOPATRA 期间的 C 波段偏振雷达研究

• 批准号: 9214864
• 负责人: Viswanathan Bringi
• 金额: $ 16.02万
• 依托单位: Colorado State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9214864&HistoricalAwards=false
• 关键词: Band; Polarimetric; Radar; Studies; During

The application of advance polarimetric radar techniques to the remote sensing of precipitation is our principal research focus. A project named CLEOPATRA (Cloud Experiment Oberpfaffenhofen and Transports), to be conducted by DLR and other universities and research organizations in Germany this summer, will make available substantial in situ and other remote sensing radar data which will validate and enhance the microphysical interpretation of the new polarimetric signatures such as propagation differential phase, copolar correlation coefficient and backscatter differential phase that can be measured with the C-Band DLR radar. In addition, the project will have available one FALCON jet operated by DLR, and two vertically pointing Doppler radars which will be important for the studies proposed herein. The FALCON aircraft will have a chaff release capability for the study of entrainment by tracking chaff using the radar depolarization signature. Coordinated radar/aircraft datasets in a variety of summer-time convective precipitation of the newer polarimetric signatures (>DP, >HV, .) will be studied and compared with aircraft 2D-PMS images and the vertically pointing Doppler data where applicable. Polarization transformation techniques based on covariance will be "instantaneous" scattering matrix methods which are already in progress will be checked by collecting further time series data during CLEOPATRA. We will couple our already developed Mueller matrix model to the DLR numerical cloud model (MESOSCOP) to study the variation in polarimetric signatures with modelled storm kinematics and microphysics products.

先进极化雷达技术在 降水遥感是我们的主要研究内容 专心点一个名为CLEOPATRA（云实验Oberpfaffenhofen 和运输），将由德国航天中心和其他大学进行， 今年夏天，德国的研究机构将提供 大量的现场和其他遥感雷达数据， 验证和加强新的微物理解释 极化特征如传播差分相位， 共极相关系数和背向散射微分相位 可以用C波段DLR雷达测量。此外该 该项目将有一架由DLR运营的MKCON喷气式飞机， 垂直指向的多普勒雷达，这将是重要的， 在此提出的研究雷达管制飞机会有一个干扰片 用跟踪箔条研究卷吸的投放能力 利用雷达去极化信号协调 雷达/飞机数据集在各种夏季对流 较新的极化特征（>DP，>HV，.）将 研究并与飞机2D-PMS图像进行比较， 垂直指向多普勒数据（如适用）。偏振 基于协方差的变换技术将是 “瞬时”散射矩阵方法已经在 将通过收集更多的时间序列数据来检查进展情况 在CLEOPATRA期间。我们将把已经开发的Mueller 矩阵模式到DLR数值云模式（MESOSCOP）进行研究 模拟风暴时偏振信号的变化 运动学和微观物理学产品。