Graphics Programs Reference
In-Depth Information
Figure 6.13. SNR, CNR and SIR versus range for the aircraft case.
6.6. MATLAB Program and Function Listings
This section presents listings for all MATLAB programs/functions used in
this chapter. The user is advised to rerun these programs with different input
parameters.
Listing 6.1. MATALB Function Ðclutter_rcs.mÑ
function [sigmaC,CNR] = clutter_rcs(sigma0, thetaE, thetaA, SL, range, hr, ht,
pt, f0, b, t0, f, l,ant_id)
% This function calculates the clutter RCS and the CNR for a ground based
radar.
clight = 3.e8; % speed of light in meters per second
lambda = clight /f0;
thetaA_deg = thetaA;
thetaE_deg = thetaE;
thetaA = thetaA_deg * pi /180; % antenna azimuth beamwidth in radians
thetaE = thetaE_deg * pi /180.; % antenna elevation beamwidth in radians
re = 6371000; % earth radius in meters
rh = sqrt(8.0*hr*re/3.); % range to horizon in meters
Search WWH ::
Custom Search