Certain questions of the potential interferenceimmunity of Polarization Modulation (PM) signal receiving systems
Abstract
The determination of the interferenceimmunity of communications radio lines using PM signals is discussed along with signal receiving systems. Two kinds of errors were differentiated in estimating the polarization parameters of a PM signal in an interference background. The first is caused by the shift in the maximum of the signal component of the output effect subjected to interference near the true value of the polarization parameter being measured. The second kind of error is due to the possibility of receiving the interference component of the output effect after the signal component. Since the method of the maximum equallikelihood function is mainly applicable in the estimation of PM signal polarization parameters when the maximum signal component lies (with probability almost one) in the neighborhood of the true value of the parameter being estimated, the probability of a reliable estimate is used for the interferenceimmunity characteristic of receiving systems to estimate the polarization parameters.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 1974
 Bibcode:
 1974STIN...7527219G
 Keywords:

 Interference Immunity;
 Polarization (Waves);
 Pulse Modulation;
 Radio Frequency Interference;
 Signal Processing;
 Error Analysis;
 Maximum Likelihood Estimates;
 Numerical Analysis;
 Probability Theory;
 Communications and Radar