机载气象雷达风切变信号仿真  

Wind Shear Signal Simulation of the Airborne Weather Radar

作　　者：吴仁彪[1,2] 孟志超[1] 范懿[1] 苏志刚[1] 卢晓光[1] 黄敬雄[2] 

机构地区：[1]中国民航大学智能信号与图像处理天津市重点实验室,天津300300 [2]深圳大学ATR国防科技重点实验室智能信息处理研究室,深圳518060

出　　处：《现代雷达》2012年第4期74-78,共5页Modern Radar

基　　金：国家自然科学基金(61071194);中国民航大学科研启动基金(08QD03S)

摘　　要：风切变是引起空难事故的重要原因之一。具有风切变探测能力的机载前视气象雷达对于保障航空安全非常重要。由于风切变现象具有危害大、持续时间短且不易探测的特点,使实际数据较难获取。因此,风切变回波信号仿真对风切变检测技术的研究和验证具有重要意义。文中对风切变雷达回波信号的仿真提出了一个新思路:首先,通过使用风场仿真软件生成一个较为真实的风切变风场,然后,根据雷达参数高保真地对风切变雷达回波信号进行仿真。通过仿真结果与风切变结构特征的对比,表明仿真过程合理,仿真数据有效。Wind shear is one of the most important factors causing air accidents. It can be detected by airborne forward-looking weather radar, which is key equipment for safeguarding air transportation. With great danger and short duration, the real radar data of wind shear is difficult to acquire. So the echo simulation of the wind shear is important to the research of the wind shear detec- tion. In the paper, a new idea for simulating the echo signal of wind shear is proposed. Firstly, a high-fidelity wind shear field is produced from the wind shear model with wind field simulation software. Then it is used to generate the time series data of radar by simulating radar operation. Finally the analysis of the simulation results demonstrates that the simulation is reasonable.

关 键 词：机载气象雷达 风切变 风场仿真 雷达回波仿真 

分 类 号：P415.2[天文地球—大气科学及气象学]