【摘要】：風(fēng)輪機(jī)復(fù)雜的電磁散射特性,會(huì)對(duì)其附近的空管通信、導(dǎo)航和監(jiān)視等電子設(shè)備產(chǎn)生嚴(yán)重影響.研究風(fēng)輪機(jī)的電磁散射特性,可為風(fēng)輪機(jī)雜波檢測(cè)和抑制提供理論依據(jù),對(duì)保證空中交通安全具有重要的意義.論文首先基于風(fēng)輪機(jī)散射點(diǎn)疊加的理論,考慮了雷達(dá)入射波到風(fēng)輪機(jī)葉片和桅桿的初始相位以及入射波方位角和俯仰角對(duì)回波的影響,將單基地回波模型擴(kuò)展到雙基地模型.同時(shí),在散射點(diǎn)疊加模型的基礎(chǔ)上,提出了基于混合模型的風(fēng)輪機(jī)散射特性分析.混合模型結(jié)合了散射點(diǎn)疊加模型和電磁仿真軟件FEKO的優(yōu)點(diǎn),考慮了電磁波在葉片和桅桿上的反射系數(shù)等因素對(duì)回波的影響,可以實(shí)現(xiàn)任意觀測(cè)點(diǎn)處的電磁散射特性計(jì)算及其微多普勒特征的分析.最后,分別對(duì)散射點(diǎn)疊加模型、FEKO以及混合模型的風(fēng)輪機(jī)電磁散射特性分析方法進(jìn)行了對(duì)比分析,給出了各自的優(yōu)缺點(diǎn)及其適用場(chǎng)合.
[Abstract]:The complex electromagnetic scattering characteristics of wind turbines will have a serious impact on the air traffic control communications, navigation and surveillance and other electronic equipment nearby. The study of electromagnetic scattering characteristics of wind turbines can provide theoretical basis for clutter detection and suppression of wind turbines, and is of great significance to ensure air traffic safety. In addition, considering the effect of the initial phase of the radar incident wave on the blade and mast of the wind turbine and the azimuth and pitch angle of the incident wave on the echo, the monostatic echo model is extended to the bistatic model. Combining the advantages of the scattering point superposition model and the electromagnetic simulation software FEKO, the influence of the reflection coefficient of the electromagnetic wave on the blade and the mast on the echo is considered. The scattering characteristics of any observation point can be calculated and the micro-Doppler characteristics can be analyzed. The analysis methods of electromagnetic scattering characteristics of wind turbines are compared and analyzed. The advantages and disadvantages of each method and its application are given.
【作者單位】： 中國(guó)民航大學(xué)天津市智能信號(hào)與圖像處理重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金委員會(huì)與中國(guó)民航局聯(lián)合資助項(xiàng)目(U1533110) 國(guó)家自然科學(xué)基金項(xiàng)目(61571442) 中央高�；究蒲袠I(yè)務(wù)費(fèi)資助項(xiàng)目(3122015D005)
【分類號(hào)】：TN957.51

【相似文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 窄秋蘋(píng);基于時(shí)、頻域特征的風(fēng)輪機(jī)雷達(dá)雜波檢測(cè)與抑制[D];中國(guó)民航大學(xué);2016年

2 石玉洛;風(fēng)電場(chǎng)電磁散射特性分析與雜波抑制技術(shù)研究[D];中國(guó)民航大學(xué);2015年

，

本文編號(hào)：2180320