典型目标和环境建模仿真技术研究

发布时间：2018-03-31 19:21

本文选题：典型目标和环境建模仿真　切入点：目标散射特性　出处：《电子科技大学》2014年硕士论文

【摘要】：作用目标的多样化、工作环境的复杂化、实现任务的多元化的发展趋势给现代雷达系统设计带来了巨大挑战,雷达系统仿真技术因可有效地支撑雷达系统的技术研究、产品研制和性能评估等主要设计环节,而逐步成为主要的雷达系统设计工具和研究热点。本文围绕目标和环境建模仿真这一制约雷达系统仿真逼真度和实用性的关键技术问题,重点研究了目标和环境高精度建模仿真技术,建立了可重用、可扩展、易操作的目标和环境仿真库,为雷达系统及其体系对抗仿真提供了技术支持。本文的主要研究内容如下:1、研究了基于统计模型的目标RCS起伏特性,目标电磁散射特性。列举了典型目标库建库模型及其RCS数据。并深入地对宽、窄带雷达目标回波仿真方法进行分析和研究。2、研究了空间电磁环境建模方法,深入地对构成复杂战场空间电磁环境的典型雷达发射信号、通信信号,以及干扰中的典型有源压制干扰、基于DRFM的有源欺骗干扰及无源箔条云团干扰的理论模型进行研究和建模,并对大气传输效应模型中的对流层折射和吸收模型进行分析和建模。3、研究了杂波统计模型建模仿真方法。并专门针对地基雷达地、海和气象杂波的建模仿真方法进行分析,并分别给出了常用的杂波后向散射系数模型,以及详细的地基雷达杂波建模仿真流程。4、分析了雷达接收端回波数据融合,给出了重采样原理和仿真验证。并深入地对目标库、复杂空间电磁环境中的雷达辐射源辐射信号、通信辐射源辐射信号及干扰信号建库和杂波库的建库流程和详细类图设计进行分析和阐述。
[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.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN955

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