最优仿生大棕蝙蝠声波信号模型及雷达测距  

The Applied of Radar Ranging Based the Model of Optimal Bionics Acoustic Signal

作　　者：崔永锋[1,2] 刘伟[2] 

机构地区：[1]周口师范学院工程优化算法研究所,河南周口466001 [2]周口师范学院计算机科学与技术学院,河南周口466001

出　　处：《科技通报》2014年第4期68-70,共3页Bulletin of Science and Technology

基　　金：国家自然科学基金项目(U1204618);河南省重点科技攻关项目(102102210265);河南省基础与前沿研究项目(132300410400)

摘　　要：从蝙蝠终端捕食阶段发出的声波信号入手,提出了三种最优化仿生大棕蝙蝠声波信号构建模型,并有效应用于雷达测距并得以实现。模型构建以最接近蝙蝠终端捕食过程中发出的声波信号为原型,采用宽带信号处理方法在设计雷达仿生蝙蝠终端捕食波形,并对线性调频、指数调频和对数时间三种模型的雷达测距算法进行具体研究,采用宽带模糊度函数对三种声波信号进行仿真分析,最后成功构建了雷达测距系统中距离分辨性能最好的最佳仿生声波信号模型。仿真结果表明,二次谐波对数调频信号模型及对应的雷达测距算法的距离分辨性能最好,具有较高的雷达测距精度。研究结果为有效利用仿生信号模型于雷达测距具有重要的参考应用价值。In order to solve the raging precision problem from the biological signal processing perspective, three types of optimum bionics acoustic signal models were proposed based on the terminal capture phase of bats. And it was applied in theradar ranging effectively. The model building took the bionic acoustic signal of big brown bat as the prototype, Widebandsignal processing was taken as the tool and the terminal capture waves were designed, the radar ranging algorithm was researched based on three types of models such as linear frequency modulation （ LFM）, exponential frequency modulation（EFM） and the logarithmic time frequency modulation in detail. Simulation was taken and the optimum bionics acoustic signal model for radar ranging was built successfully with good performance of distance estimation. Simulation result showsthat the EFM model and the corresponding ranging algorithm shows the best performance in the radar ranging, and the precision is best. Research result provides nice reference and application value in radar ranging based on bionics acoustic signal.

关 键 词：终端捕食过程 雷达测距 仿生信号 宽带模糊度函数 

分 类 号：TN953[电子电信—信号与信息处理]