Accession Number : AD0437776


Title :   SOME STATISTICAL PROPERTIES OF ELECTROMAGNETIC NOISE,


Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES


Personal Author(s) : Childers,D G ; Reed,I S


Report Date : Feb 1964


Pagination or Media Count : 41


Abstract : The importance of designing a radar (or communications) receiver to operate effectively in the presence of spatial noise creates the necessity for developing a theoretical representation of the noise which can be used for the evaluation of various detection techniques. Such a representation for a general, polarized, nonisotropic noise process is formulated here. This representation is used to determine the cross-spectral densities and cross-correlation functions between antenna array elements in the presence of the noise field only. Results for unpolarized noise are also obtained. One important result is that the noise crosscorrelation is shown to be a function of the receiver element spatial orientation when the elements are dipoles. For certain spatial orientations between dipoles it is possible to reduce the nosie cross-correlation between these antenna array elements to zero. This result should prove useful in future antenna design. (Author)


Descriptors :   *NOISE(RADAR) , MATHEMATICAL MODELS , RADIOFREQUENCY INTERFERENCE , RADAR RECEIVERS , POLARIZATION , ISOTROPISM , COMMUNICATION AND RADIO SYSTEMS , POLARIZATION , DIPOLE ANTENNAS , RADAR ANTENNAS , DETECTION , DENSITY , CORRELATION TECHNIQUES


Distribution Statement : APPROVED FOR PUBLIC RELEASE