Extraction of VLF-noise parameters

Author

Raab, Frederick H.

Author_Institution

Green Mountain Radio Res. Co., Colchester, VT, USA

fYear

1992

fDate

11-14 Oct 1992

Firstpage

1040

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/MILCOM.1992.244127

Filename

244127