本文選題：典型目標(biāo)和環(huán)境建模仿真　切入點(diǎn)：目標(biāo)散射特性　出處：《電子科技大學(xué)》2014年碩士論文

【摘要】：作用目標(biāo)的多樣化、工作環(huán)境的復(fù)雜化、實(shí)現(xiàn)任務(wù)的多元化的發(fā)展趨勢(shì)給現(xiàn)代雷達(dá)系統(tǒng)設(shè)計(jì)帶來了巨大挑戰(zhàn),雷達(dá)系統(tǒng)仿真技術(shù)因可有效地支撐雷達(dá)系統(tǒng)的技術(shù)研究、產(chǎn)品研制和性能評(píng)估等主要設(shè)計(jì)環(huán)節(jié),而逐步成為主要的雷達(dá)系統(tǒng)設(shè)計(jì)工具和研究熱點(diǎn)。本文圍繞目標(biāo)和環(huán)境建模仿真這一制約雷達(dá)系統(tǒng)仿真逼真度和實(shí)用性的關(guān)鍵技術(shù)問題,重點(diǎn)研究了目標(biāo)和環(huán)境高精度建模仿真技術(shù),建立了可重用、可擴(kuò)展、易操作的目標(biāo)和環(huán)境仿真庫(kù),為雷達(dá)系統(tǒng)及其體系對(duì)抗仿真提供了技術(shù)支持。本文的主要研究?jī)?nèi)容如下:1、研究了基于統(tǒng)計(jì)模型的目標(biāo)RCS起伏特性,目標(biāo)電磁散射特性。列舉了典型目標(biāo)庫(kù)建庫(kù)模型及其RCS數(shù)據(jù)。并深入地對(duì)寬、窄帶雷達(dá)目標(biāo)回波仿真方法進(jìn)行分析和研究。2、研究了空間電磁環(huán)境建模方法,深入地對(duì)構(gòu)成復(fù)雜戰(zhàn)場(chǎng)空間電磁環(huán)境的典型雷達(dá)發(fā)射信號(hào)、通信信號(hào),以及干擾中的典型有源壓制干擾、基于DRFM的有源欺騙干擾及無源箔條云團(tuán)干擾的理論模型進(jìn)行研究和建模,并對(duì)大氣傳輸效應(yīng)模型中的對(duì)流層折射和吸收模型進(jìn)行分析和建模。3、研究了雜波統(tǒng)計(jì)模型建模仿真方法。并專門針對(duì)地基雷達(dá)地、海和氣象雜波的建模仿真方法進(jìn)行分析,并分別給出了常用的雜波后向散射系數(shù)模型,以及詳細(xì)的地基雷達(dá)雜波建模仿真流程。4、分析了雷達(dá)接收端回波數(shù)據(jù)融合,給出了重采樣原理和仿真驗(yàn)證。并深入地對(duì)目標(biāo)庫(kù)、復(fù)雜空間電磁環(huán)境中的雷達(dá)輻射源輻射信號(hào)、通信輻射源輻射信號(hào)及干擾信號(hào)建庫(kù)和雜波庫(kù)的建庫(kù)流程和詳細(xì)類圖設(shè)計(jì)進(jìn)行分析和闡述。
[Abstract]:The diversification of the target, the complexity of the working environment and the development trend of realizing the diversification of the task bring great challenges to the design of the modern radar system. The simulation technology of the radar system can effectively support the technical research of the radar system.Product development, performance evaluation and other main design links, and gradually become the main radar system design tools and research focus.This paper focuses on the target and environment modeling and simulation, which restricts the fidelity and practicability of radar system simulation, and focuses on the high precision modeling and simulation technology of target and environment.The target and environment simulation library which is easy to operate provides technical support for radar system and its system countermeasure simulation.The main contents of this paper are as follows: 1. The RCS fluctuation and electromagnetic scattering characteristics of target based on statistical model are studied.The typical object database model and its RCS data are listed.The echo simulation method of wide and narrow band radar target is analyzed and studied deeply. Secondly, the modeling method of space electromagnetic environment is studied, and the typical radar transmitting signal and communication signal which constitute the complex battlefield space electromagnetic environment are deeply studied.And the typical active suppression jamming in jamming, the theoretical model of active deceptive jamming and passive chaff cloud jamming based on DRFM is studied and modeled.The model of tropospheric refraction and absorption in atmospheric transmission effect model is analyzed and modeled. 3. The modeling and simulation method of clutter statistical model is studied.The modeling and simulation methods of ground-based radar ground, sea and weather clutter are analyzed, and the backscattering coefficient models of clutter are given respectively.And detailed modeling and simulation flow of ground-based radar clutter. 4, the echo data fusion at the receiving end of radar is analyzed, and the resampling principle and simulation verification are given.The process and detailed class diagram design of radar emitter radiation signal, communication emitter radiation signal and jamming signal in target database, complex space electromagnetic environment and clutter database are analyzed and expounded.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN955

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本文編號(hào)：1692112