【作者】 尚炜；

【导师】 陈伯孝；

【作者基本信息】 西安电子科技大学 ， 导航、制导与控制， 2007， 硕士

【摘要】 现代末制导雷达要求在复杂的战场环境中对目标进行检测、识别和精确跟踪,并要求具有较强的抗干扰能力。现代末制导雷达大多采用全相参、数字脉冲压缩、边扫边跟(TWS)、频率捷变、单脉冲测角等先进技术,具有作用距离远、抗干扰能力强和制导精度高等特点。论文介绍一种新研制的相参末制导雷达信号处理机的设计与工程实现。结合该信号处理机的功能要求,首先阐述了该处理机的中频信号正交分解、数字脉冲压缩、弹速补偿、抗箔条干扰、单脉冲跟踪等信号处理方法;研究基于高性能浮点数字信号处理器ADSP-TS101和现场可编程门阵列的信号处理机的设计方法及其工程实现,特别对处理机的软件部分进行了详细设计;对外场采集的实测数据进行分析和处理,提出了基于频谱展宽效应识别箔条干扰的有效方法。结果表明:该处理机基本达到对目标搜索、识别及跟踪的要求。该处理机体积小、可编程程度高,在其它末制导雷达中也可借鉴。更多还原

【Abstract】 A modern terminal guidance radar should be able to complete target detection, target identification and precision track in complex battlefield environment. So most advanced terminal guidance radars adopt technologies such as complete-coherence, pulse compression, frequency agility, monopulse angle tracking, track-while-scan (TWS), and so on. Thus modern terminal guidance radars have the features of far effect range,strong anti-jamming ability, high guidance precision, etc. A new terminal guidance radar processer is introduced in the dissertation. At first,the basic theories of the system and methods of signal processing such as orthogonal transform, digtal pulse compression,velocity compensate, anti-chaff jamming,monopulse angle tracking,etc. To research into the design and engineering implement of signal processor which is based on high performance DSP ADSP-TS101 and FPGAs,and the software of the system was design elaborately. In combination of analysis of real data, the paper presents an effective target recognition method which is based on the chaff spectral expansion effect.The result proved the system reaches the request of target identification、target tracking basically.The signal processor system has advantage with little volume、easily programme,which can be drawn lessons from by other terminal guidance radar.更多还原