基于Rao-Blackwellised粒子濾波的相控陣導(dǎo)引頭指向誤差斜率在線估計(jì)

王琪; 廖志忠; 燕飛

doi:10.11999/JEIT210607

基于Rao-Blackwellised粒子濾波的相控陣導(dǎo)引頭指向誤差斜率在線估計(jì)

doi: 10.11999/JEIT210607

中國空空導(dǎo)彈研究院洛陽 471009

詳細(xì)信息

作者簡介:
王琪：男，高級工程師，研究方向?yàn)橹茖?dǎo)系統(tǒng)設(shè)計(jì)和非線性濾波

廖志忠：男，研究員，研究方向?yàn)槔走_(dá)型空空導(dǎo)彈總體設(shè)計(jì)

燕飛：女，高級工程師，研究方向?yàn)樾盘柼幚怼w行器設(shè)計(jì)

通訊作者:
王琪　wangqibuaa@126.com

中圖分類號: TN911.72
計(jì)量
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2021-06-21
- 修回日期: 2021-09-28
- 網(wǎng)絡(luò)出版日期: 2021-10-22
- 刊出日期: 2022-09-19

Online Estimation for Phased Array Seeker Pointing Error Slope Using Rao-Blackwellised Particle Filters

China Airborne Missile Academy, Luoyang 471009, China

摘要

摘要: 針對相控陣導(dǎo)引頭指向誤差斜率對導(dǎo)彈制導(dǎo)系統(tǒng)帶來的寄生回路振蕩問題，該文提出一種指向誤差斜率在線估計(jì)的算法，并能同步估計(jì)出目標(biāo)狀態(tài)。基于Rao-Blackwellised粒子濾波(RBPF)，將指向誤差斜率和目標(biāo)狀態(tài)同步估計(jì)問題分解為兩個問題：一個是指向誤差斜率的后驗(yàn)估計(jì)問題，另一個是以指向誤差斜率估計(jì)為條件的目標(biāo)狀態(tài)估計(jì)問題。該文給出了算法的推導(dǎo)過程，并進(jìn)行了數(shù)字仿真驗(yàn)證。仿真結(jié)果表明，該文所提算法對于相控陣導(dǎo)引頭指向誤差斜率的估計(jì)性能優(yōu)良；并能同時準(zhǔn)確估計(jì)出目標(biāo)狀態(tài)信息。采用此信息形成導(dǎo)引指令，可以消除指向誤差斜率對制導(dǎo)系統(tǒng)的不利影響，提高系統(tǒng)的穩(wěn)定性和制導(dǎo)精度。
- 相控陣導(dǎo)引頭 /
- 指向誤差斜率 /
- 目標(biāo)狀態(tài) /
- 在線同步估計(jì) /
- Rao-Blackwellised粒子濾波
Abstract: Considering the problem of parasitic loop oscillation caused by pointing error slope of phased array seeker for missile guidance system, an estimation algorithm of pointing error slope is proposed, and target state can be estimated synchronously. Based on the Rao-Blackwellised Particle Filters (RBPF), the simultaneous estimation of pointing error slope and target state is decomposed into two problems: one is the posterior estimation of pointing error slope, the other is the target state estimation conditional on the estimation of pointing error slope. The derivation process of the algorithm is given and the numerical simulation is carried out. The simulation results show that the algorithm proposed has better performance in estimating the pointing error slope of phased array seeker, and the target state information can be estimated accurately at the same time. Using this information to form the guidance command can eliminate the adverse effects of pointing error slope on the guidance system, and improve system stability and guidance accuracy.
- Phased array seeker /
- Pointing error slope /
- Target state /
- Online simultaneous estimation /
- Rao-Blackwellised Particle Filters (RBPF)

HTML全文

圖 1 制導(dǎo)系統(tǒng)動力學(xué)模型

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圖 2 導(dǎo)彈姿態(tài)角

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圖 3 $f = 0.1\;{\text{Hz}}$時指向誤差斜率估計(jì)

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圖 4 $f = 0.5\;{\text{Hz}}$時指向誤差斜率估計(jì)

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圖 5 指向誤差斜率估值的均方根誤差(RMSE)

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圖 6 目標(biāo)狀態(tài)估計(jì)誤差

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圖 7 目標(biāo)狀態(tài)估值誤差的協(xié)方差

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圖 8 導(dǎo)彈姿態(tài)角曲線

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圖 9 導(dǎo)彈目標(biāo)軌跡仿真結(jié)果($f = 0.1\;{\text{Hz}}$)

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表 1 仿真初始條件

符號	定義	取值
${V_{\rm{T}}}$	目標(biāo)速度	300 m/s
${V_{\rm{M}}}$	導(dǎo)彈速度	600 m/s
${D_0}$	導(dǎo)彈目標(biāo)初始距離	10000 m
${\theta _{\rm{M}}}$	導(dǎo)彈初始偏角	15°
${\theta _{\rm{T}}}$	目標(biāo)飛行偏角	160°

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表 2 仿真參數(shù)

符號	定義	取值
SNR	信噪比	25 dB
${\sigma _R}$	導(dǎo)引頭角度測量噪聲	1 mrad
M	粒子數(shù)	100
[a,b]	均勻分布區(qū)間	[–0.06, 0.06]

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