Sensitive Broadband ELF/VLF Radio Reception With the AWESOME Instrument

Author

Cohen, Morris B. ; Inan, Umran S. ; Paschal, Evans W.

Author_Institution

Dept. of Electr. Eng., Stanford Univ., Stanford, CA, USA

Volume

48

Issue

1

fYear

2010

Firstpage

3

Lastpage

17

Abstract

A new instrument has been developed and deployed for sensitive reception of broadband extremely low frequency (ELF) (defined in this paper as 300-3000 Hz) and very low frequency (VLF) (defined in this paper as 3-30 kHz) radio signals from natural and man-made sources, based on designs used for decades at Stanford University. We describe the performance characteristics of the Atmospheric Weather Electromagnetic System for Observation, Modeling, and Education (AWESOME) instrument, including sensitivity, frequency and phase response, timing accuracy, and cross modulation. We also describe a broad range of scientific applications that use AWESOME ELF/VLF data involving measurements of both subionospherically and magnetospherically propagating signals.

Keywords

amplifiers; atmospheric measuring apparatus; frequency response; ionospheric electromagnetic wave propagation; magnetospheric electromagnetic wave propagation; radio receivers; radiowave propagation; remote sensing; timing; AWESOME instrument; Atmospheric Weather Electromagnetic System for Observation, Modeling, and Education; Stanford University; broadband ELF/VLF radio reception; cross modulation; frequency 3 kHz to 30 kHz; frequency 300 Hz to 3000 Hz; frequency response; magnetospheric propagating signals; phase response; sensitivity; subionospheric propagating signals; timing accuracy; Amplifiers; analog circuits; broadband amplifiers; ionosphere; lightning; low-frequency (LF) radio; magnetosphere; radio receivers; remote sensing; waveguide antennas;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/TGRS.2009.2028334

Filename

5272358