aoaerr.m~

来自「信号与信息处理-matlab信号处理工具箱源程序集合」· M~ 代码 · 共 42 行

function [errorDeg, errorRad]=aoaerr(angle, phaseError, baseline, opFreq)
% AOAERR Calculates interferometer angle error
% 
%   error=aoaerr(angle, phaseError, baseline, opFreq)
% 
%   OUTPUTS
%   errorDeg = angle error [degrees]
%   errorRad = angle error [radians]
% 
%   INPUTS
%   angle = angle of arrival of radar signal [degrees]
%           accepts an array of angles
%   phaseError = phase measurement error [degrees]
%   baseline = baseline (separation antennas) of interferometer [m]
%   opFreq = received signal operating frequency [Hz]
% 
%   AIM:
%   To determine the angle error of a signal arriving at a particular
%   angle.
% 
%   TECHNICAL BACKGROUND:
% 
%   REFERENCE:
%   Benson, Frater, Ryan, TACTIACL ELECTRONIC WARFARE, Argoss Press, 2007,
%   p.218
%   Curtis p.381
% 
%   AUTHOR: Jason Moyle
%   DATE: September 2008

%   Copyright 2008

%% Initiate variables
dphi=d2r(phaseError);       % Convert phase error to radians
theta=d2r(angle);           % Convert arrival angle to radians
d=baseline;                 % Baseline
l=f2l(opFreq);              % Wavelength of opFreq

%% Calculate error
dtheta=l/2/pi/d./cos(theta)*dphi;
errorRad=dtheta;
errorDeg=r2d(dtheta);          % Convert angle error to degrees