基于HRRP序列的鈍頭倒角錐目標(biāo)微動(dòng)特性分析及參數(shù)估計(jì)

蘇楠; 戴奉周; 劉宏偉

doi:10.11999/JEIT180520

基于HRRP序列的鈍頭倒角錐目標(biāo)微動(dòng)特性分析及參數(shù)估計(jì)

doi: 10.11999/JEIT180520

西安電子科技大學(xué)雷達(dá)信號(hào)處理國(guó)家重點(diǎn)實(shí)驗(yàn)室西安 710071

基金項(xiàng)目: 國(guó)家自然科學(xué)基金(61671359)，國(guó)家杰出青年科學(xué)基金(61525105)，中央高?；究蒲袠I(yè)務(wù)費(fèi)(JB180210)

詳細(xì)信息

作者簡(jiǎn)介:
蘇楠：男，1990年生，博士生，研究方向?yàn)榭臻g目標(biāo)識(shí)別

戴奉周：男，1978年生，副教授，碩士生導(dǎo)師，研究方向?yàn)榭臻g目標(biāo)探測(cè)、毫米波雷達(dá)探測(cè)與成像、高速信號(hào)處理(基于FPGA和多核DSP等平臺(tái))

劉宏偉：男，1971年生，教授，博士生導(dǎo)師，研究方向?yàn)槔走_(dá)信號(hào)處理、雷達(dá)自動(dòng)目標(biāo)識(shí)別、認(rèn)知雷達(dá)、協(xié)同探測(cè)等

通訊作者:
戴奉周 fzdai@xidian.edu.cn

中圖分類號(hào): TN958.94
計(jì)量
- 文章訪問(wèn)數(shù): 2230
- HTML全文瀏覽量: 776
- PDF下載量: 48
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2018-05-28
- 修回日期: 2019-04-25
- 網(wǎng)絡(luò)出版日期: 2019-05-06
- 刊出日期: 2019-07-01

Micro-motion Characteristic Analysis and Parameters Estimation for Blunt-nosed Chamfered Cone Based on HRRP Sequence

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (61671359), The National Science Foundation for Distinguished Young Scholars (61525105), The Fundamental Research Funds for the Central Universities of China (JB180210)

摘要

摘要: 合適的彈頭結(jié)構(gòu)建模是正確估計(jì)彈頭參數(shù)的基礎(chǔ)。該文提出一種描述彈頭的鈍頭倒角錐模型，該模型將球冠散射中心和倒角散射中心看作是滑動(dòng)散射中心，并引入錐體側(cè)面遮擋效應(yīng)對(duì)散射中心位置的影響，給出散射中心位置變化的一般形式；接著分析了鈍頭倒角錐模型各個(gè)散射中心的微動(dòng)特性；在此基礎(chǔ)上，提出了一種估計(jì)目標(biāo)運(yùn)動(dòng)參數(shù)和結(jié)構(gòu)參數(shù)的非線性優(yōu)化的方法；最后，仿真結(jié)果驗(yàn)證了該文模型的正確性及參數(shù)估計(jì)方法的有效性。
- 目標(biāo)識(shí)別 /
- 鈍頭倒角錐模型 /
- 遮擋效應(yīng) /
- 微動(dòng)特性 /
- 參數(shù)估計(jì)
Abstract: Appropriate warhead structure modeling is the basis for warhead parameters estimation. In this paper, the warhead is modeled by the blunt-nosed chamfered cone model, which regards the spherical center and the chamfer scattering centers as the sliding centers and takes the influence of the side of the cone into account, the general form of the position of the scattering centers is given based on the model. Then, the micro-motion of the scattering centers in the blunt-nosed chamfered cone model is derived. Based on this, a nonlinear optimization method is proposed to estimate the target's motion parameters and structural parameters. Finally, simulation results verify the correctness of the model and the effectiveness of the parameter estimation method.
- Target recognition /
- Blunt-nosed chamfered cone /
- Occlusion effect /
- Micro-motion characteristic analysis /
- Parameters estimation

HTML全文

圖 1 鈍頭倒角錐模型

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圖 2 鈍頭倒角錐進(jìn)動(dòng)模型

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圖 3 電磁仿真模型

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圖 4 散射中心投影距離

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圖 5 不同信噪比下微動(dòng)參數(shù)估計(jì)誤差

下載: 全尺寸圖片幻燈片

表 1 不同$\text{β}$角下的散射中心位置矢量

	視角I $0 < \beta < \alpha $	視角II $\alpha < \beta < {\text{π}}/2 - \alpha $	視角III $ {\text{π}}/2 - \alpha < \beta < {\text{π}}/2$	視角IV $ {\text{π}}/2 < \beta < {\text{π}} - \alpha $	視角V $ {\text{π}} - \alpha < \beta < {\text{π}}$
A	${{\text{r}}_{{\rm{AU}}}}\left( t \right)$	${{\text{r}}_{{\rm{AU}}}}\left( t \right)$	${{\text{r}}_{{\rm{AS}}}}\left( t \right)$	${{\text{r}}_{{\rm{AS}}}}\left( t \right)$	–
B	${{\text{r}}_{{\rm{BS1}}}}\left( t \right)$	${{\text{r}}_{{\rm{BS1}}}}\left( t \right)$	${{\text{r}}_{{\rm{BU}}}}\left( t \right)$	${{\text{r}}_{{\rm{BU}}}}\left( t \right)$	${{\text{r}}_{{\rm{BU}}}}\left( t \right)$
C	${{\text{r}}_{{\rm{CS1}}}}\left( t \right)$	–	–	${{\text{r}}_{{\rm{CS2}}}}\left( t \right)$	${{\text{r}}_{{\rm{CS2}}}}\left( t \right)$

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表 2 目標(biāo)參數(shù)估計(jì)結(jié)果對(duì)比

	$H({\rm{m}})$	$R({\rm{m}})$	${R_{\rm A}}({\rm{m}})$	${R_{\rm B}}({\rm{m}})$	$\gamma {(^ \circ })$	$\varphi {(^ \circ })$
真實(shí)值	2.0000	0.4000	0.1000	0.1000	40.0000	10.0000
本文模型	2.0384	0.3885	0.0968	0.0952	40.3328	9.9964
文獻(xiàn)[4]模型	1.6001	0.5183	0.0000	0.0000	38.3837	8.2801

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