基于宽窄带微多普勒融合的锥体目标三维重构

发布时间：2018-02-26 17:03

  本文关键词： 窄带雷达 宽带雷达 灰色关联度分析 进动特征提取 三维重构　出处：《空军工程大学学报(自然科学版)》2017年02期 　论文类型：期刊论文

【摘要】：目标三维特征包含更为精细的结构和微动信息,以锥体弹头为研究对象,提出了一种基于宽、窄带混合体制雷达组网的锥体目标三维重构方法。首先建立锥体目标进动模型,详细分析了目标在不同体制雷达回波中的微多普勒调制特性,然后,使用改进的viterbi算法和最小二乘法对各散射中心的幅相信息进行提取和估计,并通过灰色关联度分析实现非理想散射中心的匹配。在此基础上,构建宽、窄带微多普勒信息融合方程组,解算出锥体目标的进动和结构参数,进而确定目标空间位置,实现三维重构。仿真结果表明,在信噪比为5dB情况下,目标的三维重构精度在91%左右。
[Abstract]:The three-dimensional feature of the target contains more precise structure and fretting information. Taking the cone warhead as the research object, a three-dimensional reconstruction method of the conical target based on the radar netted with wide and narrow band hybrid system is proposed. Firstly, the precession model of the pyramidal target is established. The characteristics of micro-Doppler modulation of target in radar echo of different systems are analyzed in detail. Then, the amplitude and phase information of each scattering center is extracted and estimated by using the improved viterbi algorithm and the least square method. On the basis of this, the fusion equations of wide and narrow band micro-Doppler information are constructed, and the precession and structure parameters of the cone target are solved, and the position of the target space is determined. The simulation results show that the accuracy of 3D reconstruction is about 91% when the SNR is 5 dB.
【作者单位】： 空军工程大学防空反导学院;
【基金】：国家自然科学基金(61372166)
【分类号】：TN958
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本文编号：1538896