LFM脉冲雷达回波模拟和处理的研究

【作者】 瞿冬霞；

【导师】 苏卫民；

【作者基本信息】 南京理工大学 ， 信号与信息处理， 2010， 硕士

【摘要】 现代雷达系统日益变得复杂,难以用简单直观的分析方法进行处理,因此,雷达系统模拟法日益获得推广。雷达系统模拟方法具有经济、灵活、方便等优点,在雷达研究领域和工程技术领域得到了广泛的应用。本文基于线性调频脉冲雷达,对雷达回波模拟和处理进行了研究。本文主要工作分为三部分：雷达回波模拟、雷达信号处理和雷达数据处理。首先,介绍了雷达信号模拟的方法以及线性调频脉冲信号,并从目标回波信号的模拟、杂波信号的模拟以及噪声信号的模拟这三个方面讨论了雷达回波信号的模拟方法,同时给出了仿真结果。然后,进行了雷达信号处理的研究,其中包括测角、波束形成、脉冲压缩、动目标显示(MTI)处理、动目标检测(MTD)处理、恒虚警(CFAR)处理以及目标凝聚,通过雷达信号处理完成对目标的检测,提取目标的距离、方位角和俯仰角等信息。最后,着重分析了雷达数据处理方法,包括航迹起始、点迹航迹关联、航迹补点、航迹消亡、剩余点迹的删除以及航迹显示,并给出了仿真结果。本文完整地给出了线性调频脉冲雷达系统的模拟和处理过程,模拟的雷达回波信号,经过雷达信号处理以及雷达数据处理后,最终形成可靠航迹并显示。更多还原

【Abstract】 Modern radar system becomes increasingly complex, it’s difficult to process with simple and intuitive method, therefore, the method of radar system simulation gets increasingly popularized. The method of radar system simulation has many advantages, such as economic, flexible, convenient and so on. It has been widely used in the field of radar research and engineering technology.This paper based on LFM pulse radar, does research on radar echo simulation and processing. This paper is divided into three main parts:radar echo simulation, radar signal processing and radar data processing. First, describes the methods of radar signal simulation and LFM pulse signal, then discusses the simulation of the radar echo signal, including the simulation of target echo signal, clutter signal and noise signal. Simultaneously, it gives the results of simulation. Then, it does research on radar signal processing, including measuring angle, beam forming, pulse compression, MTI, MTD, CFAR and target cohesion, completes detection of target by radar signal processing, and extracts the target’s distance, azimuth, elevation and other information. Finally, this paper mainly analyzes the methods of radar data processing, including track initiation, point-track association, track supplement, track die out, deletion of remnant points and track display. Simultaneously, it gives the results of simulation. This paper completely gives the simulation and processing of LFM pulse radar system, the simulated radar echo signal, after the radar signal processing and radar data processing, eventually forms reliable tracks and displays them.更多还原