基于組網(wǎng)雷達的有翼彈道目標三維成像

馮存前; 陳蓉; 黃大榮; 許旭光

doi:10.11999/JEIT170481

基于組網(wǎng)雷達的有翼彈道目標三維成像

doi: 10.11999/JEIT170481

基金項目:

國家自然科學基金(61372166)

計量
- 文章訪問數(shù): 1211
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2017-05-18
- 修回日期: 2017-11-27
- 刊出日期: 2018-03-19

Three-Dimensional Imaging of Ballistic Targets with Vanes Based on Netted Radar

Funds:

The National Natural Science Foundation of China (61372166)

摘要

摘要: 組網(wǎng)雷達的多視角特性有利于獲取目標的真實空間結(jié)構(gòu)。該文在構(gòu)建有翼進動目標回波模型的基礎(chǔ)上，分析不同類型散射中心的微多普勒信息變化率的變化趨勢，對微多普勒信息進行分離提取。利用非線性最小二乘擬合獲取散射中心的幅度、相位信息?；谖犹卣鞯牟蛔冃裕枚嗖坷走_錐頂散射中心的幅度信息估計微動特征和坐標轉(zhuǎn)換參數(shù)。然后根據(jù)各散射中心在不同視角上投影分量的差異，實現(xiàn)尾翼散射中心的匹配，之后求解散射中心的瞬時空間位置，實現(xiàn)目標重構(gòu)。仿真驗證了算法的有效性，并分析了微動參數(shù)和信噪比對重構(gòu)結(jié)果的影響。
- 組網(wǎng)雷達 /
- 有翼進動目標 /
- 散射中心匹配 /
- 3維成像
Abstract: The multi-angle characteristic of netted radar is helpful in obtaining the actual space structure of ballistic targets. In this paper, the echo model for precession targets with vanes is established. Based on the model, the rate of change of micro-Doppler for different scattering centers are analyzed, and the micro-Doppler information is extracted. Then the nonlinear least-square fitting is introduced to obtain the amplitude and phase information of scattering centers. Amplitude information of scattering centers at the conical point obtained from radars is used to estimate micro-motion characteristics and parameters of coordinate transformation. According to the distinctions among different projection components of scattering centers under different perspectives, scattering centers of fins are matched, and the instantaneous space coordinates are calculated to reconstruct the targets. Finally, simulations verify the effectiveness of the proposed method, and the influence of micro-motion parameters and SNR (Signal to Noise Ratio) on reconstruction results are analyzed.
- Netted radar /
- Ballistic targets with vanes /
- Scattering centers matching /
- 3-D imaging

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參考文獻(33)

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