發(fā)布時(shí)間：2018-02-26 17:03

  本文關(guān)鍵詞： 窄帶雷達(dá) 寬帶雷達(dá) 灰色關(guān)聯(lián)度分析 進(jìn)動(dòng)特征提取 三維重構(gòu)　出處：《空軍工程大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年02期 　論文類型：期刊論文

【摘要】：目標(biāo)三維特征包含更為精細(xì)的結(jié)構(gòu)和微動(dòng)信息,以錐體彈頭為研究對(duì)象,提出了一種基于寬、窄帶混合體制雷達(dá)組網(wǎng)的錐體目標(biāo)三維重構(gòu)方法。首先建立錐體目標(biāo)進(jìn)動(dòng)模型,詳細(xì)分析了目標(biāo)在不同體制雷達(dá)回波中的微多普勒調(diào)制特性,然后,使用改進(jìn)的viterbi算法和最小二乘法對(duì)各散射中心的幅相信息進(jìn)行提取和估計(jì),并通過(guò)灰色關(guān)聯(lián)度分析實(shí)現(xiàn)非理想散射中心的匹配。在此基礎(chǔ)上,構(gòu)建寬、窄帶微多普勒信息融合方程組,解算出錐體目標(biāo)的進(jìn)動(dòng)和結(jié)構(gòu)參數(shù),進(jìn)而確定目標(biāo)空間位置,實(shí)現(xiàn)三維重構(gòu)。仿真結(jié)果表明,在信噪比為5dB情況下,目標(biāo)的三維重構(gòu)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.
【作者單位】： 空軍工程大學(xué)防空反導(dǎo)學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(61372166)
【分類號(hào)】：TN958
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本文編號(hào)：1538896