Title :
Distribution of the sum of clutter and thermal noise
Author :
Helstrom, Carl W.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
fDate :
4/1/2000 12:00:00 AM
Abstract :
The results of an approximate method for calculating the probability density function of the amplitude of the sum of Weibull-distributed radar clutter and thermal noise are compared with the exact distributions and found to be inaccurate except in one special case. It is shown how the assumption that the in-phase (I) and quadrature (Q) components of clutter have a joint circular-symmetric density function can be used to compute the density functions of the I- and Q-components themselves from the hypothesized distribution of the amplitude
Keywords :
Weibull distribution; radar clutter; radar detection; thermal noise; Gaussian random variables; Rayleigh distribution; Weibull-distributed radar clutter; additive noise; amplitude probability density function; approximate method; clutter-noise sum; in-phase components; joint circular-symmetric density function; quadrature components; thermal noise; Additive noise; Density functional theory; Distributed computing; Narrowband; Noise level; Probability density function; Radar clutter; Radar scattering; Random processes; Rayleigh scattering;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
