ABOVE Level-2 Amplitude and Phase of VLF transmitter signals at Lucky Lake (LUCK)

2023-06-21 17:04:35

Amplitude and phase for narrowband transmitters at
ABOVE site Lucky Lake, Saskatchewan, Lat: 51.15, Lon: -107.26. The
Array for Broadband Observations of VLF/ELF Emissions (ABOVE)
Level-2 CDF files of Amplitude, Phase and Bearing at 1 minute
resolution for seven VLF transmitters as observed from each station
of the ABOVE array.

The VLF transmitters observed are:

NDK (LaMoure, North Dakota, 46.37 N, 98.33 W, 25.2 kHz)

NAA (Cutler, Maine, 44.64 N, 67.29 W, 24.0 kHz),

NLK (Seattle, Washington, 48.20 N 121.92 W, 24.8 kHz)

NWC (Exmouth, Western Australia, 21.82 S, 114.16 E, 19.8 kHz)

NPM (Lualualei, Hawaii, 21.42 N, 158.15 W, 21.4 kHz)

NRK (Keflavik, Iceland, 63.85 N, 22.45 W, 37.5 kHz)

WWVB (Fort Collins, Colorado, 40.68 N, 105.05 W, 60 kHz)

GO-ABOVE is a ground‐based array of VLF radio receivers located across Canada and run as a part of the Canadian Space Agency's Geospace Observatory (GO). The ABOVE instruments are situated in two north‐south chains in Alberta and Manitoba, through the region roughly from L = 3 through L = 8. The ABOVE instruments monitor electromagnetic waves in a frequency range from 100 Hz to 75 kHz, covering chorus and hiss emissions as well as U.S. Navy transmitters near 25 kHz. The absolute timing accuracy is 10 ns, from GPS.

Please include the following in any publications using this data: Infrastructure funding for ABOVE is provided by the Canada Foundation for Innovation and the province of Alberta. ABOVE data used in this work was collected with the support of the Canadian Space Agency Geospace Observatory (GO Canada) contribution initiative.

CDF

PT1M

Epoch

Phase ndk-luck

abv_phase_luck_ndk

Phase of VLF transmitter NDK observed at luck.
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

radians

Amplitude ndk-luck

abv_amp_luck_ndk

Amplitude of VLF transmitter NDK observed at luck.
Amplitude is calculated separately for North-South and East-West antennas.

ADC units

Bearing ndk-luck

abv_bearing_luck_ndk

Bearing to VLF transmitter NDK observed at luck.
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

degrees

Phase naa-luck

abv_phase_luck_naa

Phase of VLF transmitter NAA observed at luck.
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

radians

Amplitude naa-luck

abv_amp_luck_naa

Amplitude of VLF transmitter NAA observed at luck.
Amplitude is calculated separately for North-South and East-West antennas.

ADC units

Bearing naa-luck

abv_bearing_luck_naa

Bearing to VLF transmitter NAA observed at luck.
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

degrees

Phase nlk-luck

abv_phase_luck_nlk

Phase of VLF transmitter NLK observed at luck.
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

radians

Amplitude nlk-luck

abv_amp_luck_nlk

Amplitude of VLF transmitter NLK observed at luck.
Amplitude is calculated separately for North-South and East-West antennas.

ADC units

Bearing nlk-luck

abv_bearing_luck_nlk

Bearing to VLF transmitter NLK observed at luck.
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

degrees

Phase nwc-luck

abv_phase_luck_nwc

Phase of VLF transmitter NWC observed at luck.
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

radians

Amplitude nwc-luck

abv_amp_luck_nwc

Amplitude of VLF transmitter NWC observed at luck.
Amplitude is calculated separately for North-South and East-West antennas.

ADC units

Bearing nwc-luck

abv_bearing_luck_nwc

Bearing to VLF transmitter NWC observed at luck.
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

degrees

Phase npm-luck

abv_phase_luck_npm

Phase of VLF transmitter NPM observed at luck.
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

radians

Amplitude npm-luck

abv_amp_luck_npm

Amplitude of VLF transmitter NPM observed at luck.
Amplitude is calculated separately for North-South and East-West antennas.

ADC units

Bearing npm-luck

abv_bearing_luck_npm

Bearing to VLF transmitter NPM observed at luck.
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

degrees

Phase nrk-luck

abv_phase_luck_nrk

Phase of VLF transmitter NRK observed at luck.
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

radians

Amplitude nrk-luck

abv_amp_luck_nrk

Amplitude of VLF transmitter NRK observed at luck.
Amplitude is calculated separately for North-South and East-West antennas.

ADC units

Bearing nrk-luck

abv_bearing_luck_nrk

Bearing to VLF transmitter NRK observed at luck.
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

degrees

Phase wwvb-luck

abv_phase_luck_wwvb

Phase of VLF transmitter WWVB observed at luck.
Phases for upper (space) and lower (mark) frequencies have been combined. Phase is calculated along direction of maximum amplitude.

radians

Amplitude wwvb-luck

abv_amp_luck_wwvb

Amplitude of VLF transmitter WWVB observed at luck.
Amplitude is calculated separately for North-South and East-West antennas.

ADC units

Bearing wwvb-luck

abv_bearing_luck_wwvb

Bearing to VLF transmitter WWVB observed at luck.
Bearing direction is based on amplitudes from the 2 antennas and always between 0 (N/S) and 90 (E/W) degrees.

degrees