Title :
Extraction of VLF-noise parameters
Author :
Raab, Frederick H.
Author_Institution :
Green Mountain Radio Res. Co., Colchester, VT, USA
Abstract :
An algorithm is developed for real-time extraction of the parameters (power, impulsivity, and spikiness) of the Field-Lewinstein model for very-low-frequency (VLF) noise. This algorithm operates upon the first three moments of the noise envelope, which can be obtained by simple signal-processing hardware or software. The solution for the noise-model parameters in terms of the measured moments is based upon an iterative solution for one parameter and a quadratic solution for the other two. This technique has been used in an experimental VLF receiver as part of a system that adaptively adjusts the clipping level to ensure optimum suppression of noise impulses
Keywords :
radio systems; radiofrequency interference; signal processing; Field-Lewinstein model; VLF receiver; VLF-noise parameters; clipping level; hardware; impulsivity; noise impulse suppression; power; radio communication; signal-processing; software; spikiness; very-low-frequency; Frequency; Gaussian noise; Hardware; Low-frequency noise; Mathematical model; Noise level; Noise reduction; Phase noise; Signal processing; Signal processing algorithms;
Conference_Titel :
Military Communications Conference, 1992. MILCOM '92, Conference Record. Communications - Fusing Command, Control and Intelligence., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0585-X
DOI :
10.1109/MILCOM.1992.244127
