A Modern VLF Receiver for use in an Array for VLF Imaging of the D-Region
- Resource Type
- Conference
- Authors
- Cannon, James M.; Marshall, Robert A.; Dick, Ryan; Fragomeni, Bennett; Wankmueller, Sebastian; Orlandella, Sophia
- Source
- 2024 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM) URSI National Radio Science Meeting (USNC-URSI NRSM), 2024 United States National Committee of. :394-394 Jan, 2024
- Subject
- Aerospace
Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
Geoscience
Photonics and Electrooptics
Signal Processing and Analysis
Presses
Phase measurement
Density measurement
Radio transmitters
Imaging
Receivers
Probes
- Language
Very Low Frequency (VLF) radio receivers have been used to remotely sense the ionosphere and whistler waves traveling through it for over 60 years (R.A. Helliwell, Stanford University Press, Stanford (1965)). A common technique to remotely sense ionospheric density uses the measurement of narrowband signals from different VLF transmitters around the world. This technique relies on the VLF signals propagating efficiently within the Earth-Ionosphere waveguide and the ability of changes in measured amplitude and phase to be tied to changes in the D-region ionospheric density profile. As a path-integrated measurement, a single receiver can measure average changes to the D-region density along the transmit-receive path but cannot be used to probe small spatial scale disturbances along that path.