-
摘要高分辨雷达是我国雷达领域的重要研究方向，频率步进信号则是实现大宽带高分辨雷达的主要手段之一。本文在 Matlab软件环境下对高分辨雷达信号处理及其实测数据在以下几个方面进行了研究： 在简单 PD雷达信号处理和参量型恒虚警检测原理叙述的基础上，对其每个流程进行了仿真，分析了简单 PD信号波形在高分辨体制下的不足。 采用步进频率信号体制，在其信号处理基础上讨论了参数选择对于高分辨一维距离像的影响。 根据步进频率信号特点，通过对经典目标抽取算法的分析，指出其缺陷-不能自动选择抽取起始点。为解决这个问题，提出采用“逆向舍弃算法”，运用实测数据验证了算法的有效性。 根据目标在高分辨雷达距离像上的特点，对参量型恒虚警算法进行了改进，提出采用非参量型的双门限恒虚警算法，利用实测数据进行了验证。61012
- 上一篇：MATLAB基于FPGA的卷积码译码技术
- 下一篇：基于IFFT的毫米波步进频率高分辨率雷达回波信号处理
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