摘要
针对抑制高机动目标引起的雷达回波能量扩散现象所采用的参数补偿方法存在运算量大,难以满足实时性要求的问题。文中从提高算法检测性能和运算效率的角度出发,提出一种基于互相关处理和分数阶傅里叶变换的方法。首先利用脉压信号的频域结构,基于互相关处理实现回波信号中速度与积累时间的解耦运算;然后在MTD基础上利用分数阶傅里叶变换,获得目标的距离和加速度参数,并通过连续两帧回波信号的距离信息,获得目标的速度参数;最后通过运算量分析和仿真验证,对比了所提方法的运算效率以及检测性能。
In order to suppress the radar echo energy diffusion caused by high maneuvering target, the existing parameter compensation methods have the problem of large amount of computation and difficult to meet the real-time requirements. In order to improve the detection performance and operation efficiency of the algorithm, this paper proposes a method based on cross-correlation processing and fractional Fourier transform. Firstly, using the frequency-domain structure of pulse compression signal, the decoupling operation of velocity and accumulation time in echo signal is realized based on cross-correlation processing. Secondly, based on MTD, the distance and acceleration parameters of the target are obtained by fractional Fourier transform, and the velocity parameters of the target are obtained by the range information of two consecutive frames of echo signals;finally, the performance advantages of the proposed method are compared and analyzed through operational component analysis and simulation verification.
作者
庞存锁
张硕
郭华玲
PANG Cunsuo;ZHANG Shuo;GUO Hualing(School of Information and Communication Engineering,North University of China,Taiyuan 030051,China;Key Laboratory of Information Detection and Processing in Shanxi Province,North University of China,Taiyuan 030051,China;National Key Laboratory of Electronic Measurement Technology,North University of China,Taiyuan 030051,China;School of Electrical and Control Engineering,North University of China,Taiyuan 030051,China)
出处
《弹箭与制导学报》
北大核心
2021年第5期7-11,18,共6页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
国防科技重点实验室基金(6142001200406)
山西省自然科学基金(201801D121152)资助。
关键词
能量扩散
高机动
互相关处理
分数阶傅里叶变换
energy diffusion
high maneuver
cross correlation processing
fractional Fourier transform
