机载相控阵天气雷达谱参数测量的系统误差分析及订正研究

项目名称： 机载相控阵天气雷达谱参数测量的系统误差分析及订正研究

项目编号： No.41505031

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 天文学、地球科学

项目作者： 史朝

作者单位： 成都信息工程大学

项目金额： 21万元

中文摘要： 机载相控阵天气雷达具有高机动性、快速灵活扫描等特征，是未来构建地基-空基-天基一体化的雷达探测网的重要组成，然而国内外对于相控阵固态发射体制在机载雷达中应用刚刚起步，其探测能力及准确性还待深入研究。本课题通过回波模拟与实验数据处理，区分与地基天气雷达、地基相控阵天气雷达、机载机械扫描天气雷达在谱测量准确性方面的差异性，揭示机载相控阵天气雷达谱参数估计的误差来源及特征，综合分析相控阵、固态发射与脉冲压缩、动平台、地杂波等因素引入的测量不确性，并与散射、衰减、接收等过程里天气雷达共有误差源一同考虑，建立模拟回波，揭示误差极限及影响，建立误差可订正量的数理关系，在此基础上提出订正方法，并开展实验数据处理及评估，最终形成可提高机载相控阵天气雷达谱参数测量准确性的谱订正方法。

中文关键词： 机载；相控阵；谱参数；订正

英文摘要： Airborne phased array radar has high maneuverability, fast and flexible scanning and other features. It plays important role in building the future network of spaecborne, airborne ,and ground-based weather radar,however, since the solid-state phased array transmitter system in the machine airborne radar application has just started, its detection capability and accuracy still needs further study. This topic is based on echo simulation and experimental data processing, It distinguish between ground weather radar, ground phased array radar, airborne weather radar mechanical scanning measurement accuracy in terms of the spectra measurement. Airborne phased array radar spectral parameters estimation error sources and characteristics are revealed .A comprehensive analysis of phased array, solid-state transmitter with pulse compression, the measurement of the moving platform, ground clutter and other factors is carried out in terms of uncertainty and errors. The establishment of an simulated echoes is considered to reveal error limititation and influence and establish the error correction. On the basis of the revised methodology, experimental data processing and assessment are conducted. Airborne phased array radar spectrum Spectral parameter measurement accuracy is finally improved.

英文关键词： airborne;phased array;spectral parameters;correction