博客
关于我
相控阵天线(线阵二)
阅读量:562 次
发布时间:2019-03-09

本文共 1249 字,大约阅读时间需要 4 分钟。

相控阵天线的孔径效应

关键参数设置

     假设波束指向角度为40度,权值所用频率为500MHz,方向矢量所用频率分别为450MHz,500MHz,600MHz。

源代码

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%              线阵(孔径效应)%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%clc;clear all;close all;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%               参数设置%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%c=3e8;                 % 光速fc=500e6;              % 权值所用频率f=[450e6 500e6 600e6]; % 方向矢量频率lamda=c/fc;            % 波长d=lamda/2;             % 阵元间距M=10;                  % 阵元个数theta0=40;             % 波束指向取值范围n = [0:1:M-1]';        % 列矢量theta=-90:1:90;        % 扫描角取值范围%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%               权值计算%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%W = exp(1j*2*pi*fc*n*d*sin(theta0*pi/180)/c);%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%           权值*方向矢量%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%for p=1:length(f)   for q=1:length(theta)    % 扫描角取值范围             V = exp(1j*2*pi*f(p)*n*d*sin(theta(q)*pi/180)/c);%接收信号 相对于原点接收到的归一化的信号         B(q) = W'*V;       % 阵元功率叠加    '表示共轭转置   .'表示转置   endF=abs(B);    % 取信号的实部Fmax=max(F); % 得到最大值F_dB=20*log10(F/Fmax);plot(theta,F_dB);hold on;grid on;endaxis([-91 90 -40 1]);legend('f=450MHz','f=500MHz','f=600MHz');

仿真结果

在这里插入图片描述

仿真结果分析

     从仿真结果可以看出,只有当权值所用频率和方向矢量所用频率相等时,波束指向才正确。

转载地址:http://pnapz.baihongyu.com/

你可能感兴趣的文章
MySQL binlog三种模式
查看>>
multi-angle cosine and sines
查看>>
Mysql Can't connect to MySQL server
查看>>
mysql case when 乱码_Mysql CASE WHEN 用法
查看>>
Multicast1
查看>>
mysql client library_MySQL数据库之zabbix3.x安装出现“configure: error: Not found mysqlclient library”的解决办法...
查看>>
MySQL Cluster 7.0.36 发布
查看>>
Multimodal Unsupervised Image-to-Image Translation多通道无监督图像翻译
查看>>
MySQL Cluster与MGR集群实战
查看>>
multipart/form-data与application/octet-stream的区别、application/x-www-form-urlencoded
查看>>
mysql cmake 报错,MySQL云服务器应用及cmake报错解决办法
查看>>
Multiple websites on single instance of IIS
查看>>
mysql CONCAT()函数拼接有NULL
查看>>
multiprocessing.Manager 嵌套共享对象不适用于队列
查看>>
multiprocessing.pool.map 和带有两个参数的函数
查看>>
MYSQL CONCAT函数
查看>>
multiprocessing.Pool:map_async 和 imap 有什么区别?
查看>>
MySQL Connector/Net 句柄泄露
查看>>
multiprocessor(中)
查看>>
mysql CPU使用率过高的一次处理经历
查看>>