悬停直升机回波特性与检测仿真分析  

Analysis of Simulation of Characteristics and Detection of Echo from Hovering Helicopter

作　　者：刘刚[1] 黄增兴[1] 

机构地区：[1]南京电子技术研究所,江苏省南京市210013

出　　处：《电子工程师》2005年第6期1-4,9,共5页Electronic Engineer

摘　　要：分析了低空悬停直升机旋翼回波信号的模型和特性,提出了相应的检测方法,包括时域信号检测法和时、频域信号联合检测法,并用MATLAB进行仿真验证。结果表明,在L波段选择合适的脉冲重复频率和积累时间,对低空、超低空飞行或悬停的直升机是可以检测的。This paper analyzes and studies the model and characteristics of echo from rotor of a low altitude hovering helicopter. A detection method is proposed based on this study, which includes time domain signal detection method and time/frequency domain combined signal detection method. It also utilizes the MATLAB to simulate and verify. The simulation results indicate that in L band, when suitable PRF and integration time are selected, the low altitude or super-low altitude flying or hovering helicopter can be detected.

关 键 词：直升机 信号处理 仿真 目标检测 

分 类 号：TN971[电子电信—信号与信息处理]