毕业论文关键词   高分辨雷达信号处理  步进频率  逆向舍弃算法  恒虚警          

 Title   High-resolution  radar signal processing and  target detection  algorithm  simulation                       

Abstract High resolution radar is an important field of research  in our country’s radar development. Frequency step signal is a major form of  realization for large broadband primary means of high resolution radar. In the Matlab software environment,this paper analyses high resolution radar signal processing together with measuring data in the following aspects: Based on simple PD radar signal processing and parameter type CFAR detector  principle,every  processe  get  simulated.  Simple  PD  signal waveform in high-resolution regime deficiencies was analysed. Under stepping  frequency signal  system,the signal processing parameters  are discussed  on the basis of  one-dimensional range  for high-resolution effects According  to  characteristics  of  stepped frequency  signal  ,through  the analysis of classical target extraction algorithm, its flaws-  Can not automatically select the decimation starting point are pointed out.  To solve this problem, “reverse discard algorithm” has been proposed, and the algorithm is proven to be effective using the measured data. On the ground of the target characteristics in high resolution radar range  image,parametric  CFAR  algorithm has been  developed to propose non-parametric  type  dual threshold  CFAR  algorithm.Verification is accomplished through the data measurement .  

Keywords   Resolution radar signal processing  Step frequency  CFAR              Reverse discard algorithm

目  录 

1 绪论     1 

1.1  研究背景及意义   ·  1 

1.2  高分辨雷达体制的选择    1 

1.3  毫米波寻的雷达系统优势与特点    2 

1.4  论文内容安排     3 

2 典型雷达波形信号处理     4 

2.1  典型雷达波形     4 

2.1.1 单频脉冲波形    4 

2.1.2 线性调频波   ·  5 

2.2  雷达信号处理     7 

2.2.1 雷达基本方程    7 

2.2.2雷达信号处理流程   ·  7 

2.2.3匹配滤波器原理     8 

2.2.4脉冲积累   ·  8