基于复合滤波的弹箭目标特征点提取方法  

Extraction Method for the Characteristic Points of Missile Targets Based on Compound Filter

作　　者：刘洋 陈春江 宫志华 吴家健 胡永 LIU Yang;CHEN Chunjiang;GONG Zhihua;WU Jiajian;HU Yong(Unit 63861 of PLA,Baicheng 137001,China)

机构地区：[1]解放军63861部队,吉林白城137001

出　　处：《火力与指挥控制》2024年第7期86-90,共5页Fire Control & Command Control

摘　　要：为解决低信噪比条件下,小波变换难以提取雷达弹箭目标特征点时刻的难题,提出一种包含3层滤波结构的复合滤波方法。通过STFT滤波、巴特沃斯带通滤波和小波变换,滤除噪声和弹箭主目标信号,大幅提升低信噪比条件下特征点时刻在小波重构波形的可检测度,扩展了小波变换在雷达弹箭目标特征点提取的应用范围。通过实例应用和数据比对,验证了该方法的有效性。In order to solve the problem that wavelet transform is difficult to extract the characteristic points time of radar missile targets under the condition of low signal-to-noise ratio,a composite filter method including three-layer filter structure is proposed.Through STFT filter,Butterworth bandpass filter and wavelet transform,the noise and main target signals of missiles are filtered,and the detectability of the characteristic points time in the wavelet reconstruction waveform under the condition of low signal-to-noise ratio is greatly improved,which extends the application range of wavelet transform in radar missile target characteristic point extraction.The effectiveness of this method is verified by an example application and data comparison.

关 键 词：雷达测量 特征点提取 复合滤波 小波变换 

分 类 号：TN911.7[电子电信—通信与信息系统] TJ01[电子电信—信息与通信工程]