calculatepllcoef.m

costas的matlab代码

function [c1,c2] = calculatePLLCoef(zeta,bandwidth);
% Calculates coefficients used in the carrier tracking loop(PLL) 
% zeta : tamping factor
% bandwidth : nosie bandwidth
tUpd = 0.001; %integration time
gain = 0.0005; % gain 
wT = (2*bandwidth*zeta)/(zeta^2+0.25)*tUpd; %natural frequency 
c1 = (1/gain)*(8*zeta*wT)/(4+4*zeta*wT+wT^2);
c2 = (1/gain)*(4*wT^2)/(4+4*zeta*wT+wT^2);