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STEREO WAVES (SWAVES) Radio Intensity Spectra, both Ahead and Behind s/c

ResourceID
spase://NASA/NumericalData/STEREO/SWAVES/DS/Combined/PT1M

Description

The CDF file contains 1 minute averaged radio intensity data from both the Ahead and Behind s/c. A description of the STEREO/WAVES instrument is provided in: Bougeret, J.L, et al. (2008), S/WAVES: The Radio and Plasma Wave Investigation on the STEREO Mission, Space Science Reviews, 136, 487-528. The STEREO / WAVES (SWAVES) instruments provide unique and critical observations for all primary science objectives of the STEREO mission, the generation of CMEs, their evolution, and their interaction with Earth's magnetosphere. SWAVES can probe a CME from lift-off to Earth by detecting the coronal and interplanetary (IP) shock of the most powerful CMEs, providing a radial profile through spectral imaging, determining the radial velocity from ~2 RS (from center of sun) to Earth, measuring the density of the volume of the heliosphere between the sun and Earth, and measuring important in situ properties of the IP shock, magnetic cloud, and density compression in the fast solar wind stream that follows. SWAVES measures the fluctuation electric field present on three orthogonal monopole antennas mounted on the back (anti-sunward) surface of the spacecraft. Each monopole antenna unit is a 6 m long Beryllium-Copper (BeCu) "stacer" spring. The three units deploy from a common baseplate that also accommodates the preamplifier housing. The 6 m length was chosen to put the antenna quarter-wave resonance near the top of the SWAVES HFR2 frequency band. These data consist of output from the SWAVES HFR and LFR receivers. - the High Frequency Receivers (HFR) - for spectral analysis and direction finding of radio noise generated from a few solar radii (16 MHz) to about half an Astronomical Unit (125 kHz) - the Low Frequency Receiver (LFR) - for spectral analysis and direction finding from about half an Astronomical Unit (160 kHz) to one AU (2.5 kHz).

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Details

Version:2.3.2

NumericalData

ResourceID
spase://NASA/NumericalData/STEREO/SWAVES/DS/Combined/PT1M
ResourceHeader
ResourceName
STEREO WAVES (SWAVES) Radio Intensity Spectra, both Ahead and Behind s/c
AlternateName
STEREO_LEVEL2_SWAVES
AlternateName
Solar TErrestrial RElations Observatory (STEREO) Waves (SWAVES) STEREO-A and STEREO-B Level 2 CDFs at NASA's CDAWeb
ReleaseDate
2021-04-27 15:38:11Z
Description

The CDF file contains 1 minute averaged radio intensity data from both the Ahead and Behind s/c. A description of the STEREO/WAVES instrument is provided in: Bougeret, J.L, et al. (2008), S/WAVES: The Radio and Plasma Wave Investigation on the STEREO Mission, Space Science Reviews, 136, 487-528. The STEREO / WAVES (SWAVES) instruments provide unique and critical observations for all primary science objectives of the STEREO mission, the generation of CMEs, their evolution, and their interaction with Earth's magnetosphere. SWAVES can probe a CME from lift-off to Earth by detecting the coronal and interplanetary (IP) shock of the most powerful CMEs, providing a radial profile through spectral imaging, determining the radial velocity from ~2 RS (from center of sun) to Earth, measuring the density of the volume of the heliosphere between the sun and Earth, and measuring important in situ properties of the IP shock, magnetic cloud, and density compression in the fast solar wind stream that follows. SWAVES measures the fluctuation electric field present on three orthogonal monopole antennas mounted on the back (anti-sunward) surface of the spacecraft. Each monopole antenna unit is a 6 m long Beryllium-Copper (BeCu) "stacer" spring. The three units deploy from a common baseplate that also accommodates the preamplifier housing. The 6 m length was chosen to put the antenna quarter-wave resonance near the top of the SWAVES HFR2 frequency band. These data consist of output from the SWAVES HFR and LFR receivers. - the High Frequency Receivers (HFR) - for spectral analysis and direction finding of radio noise generated from a few solar radii (16 MHz) to about half an Astronomical Unit (125 kHz) - the Low Frequency Receiver (LFR) - for spectral analysis and direction finding from about half an Astronomical Unit (160 kHz) to one AU (2.5 kHz).

Acknowledgement
Users please acknowledge the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and STEREO/WAVES Principal Investigator Jean-Louis Henry Bougeret.
Contacts
RolePerson
1.PrincipalInvestigatorspase://SMWG/Person/Jean-Louis.Henry.Bougeret
2.CoInvestigatorspase://SMWG/Person/Robert.J.MacDowall
InformationURL
Name
STEREO/WAVES Instrument Page
URL
Description

STEREO/WAVES instrument page maintained by NASA GSFC with science and instrument descriptions, data, personnel, publications, and related links sections

Language
en
InformationURL
Name
STEREO Mission Page at NASA/GSFC
URL
Description

STEREO mission page with spacecraft and instrument descriptions, news, links to data (STEREO Science Center), and image gallerys

Language
en
PriorIDs
spase://VWO/NumericalData/STEREO/SWAVES/CDF_DS_Combined_PT1M
spase://VWO/NumericalData/STEREO/SWAVES/DS.Combined.PT1M
spase://VSPO/NumericalData/STEREO/SWAVES/DS/Combined/PT1M
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
Description

FTP access to repository of SWAVES Level 2 data in CDF format at NASA CDAWeb.

Language
en
AccessURL
Name
HTTPS from SPDF
URL
Description

In CDF via HTTP from SPDF

Format
CDF
Encoding
None
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb
URL
ProductKey
STEREO_LEVEL2_SWAVES
Description

Repository of SWAVES data in CDF format at NASA CDAWeb, accessible via web interface. Name of the data resource: STEREO_LEVEL2_SWAVES.

Language
en
Format
Text
Acknowledgement
Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and STEREO/WAVES Principal Investigator Jean-Louis Henry Bougeret
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb HAPI Server
URL
Style
HAPI
ProductKey
STEREO_LEVEL2_SWAVES
Description

Web Service to this product using the HAPI interface.

Format
CSV
Acknowledgement
Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and STEREO/WAVES Principal Investigator Jean-Louis Henry Bougeret
ProcessingLevel
Calibrated
InstrumentIDs
MeasurementType
Waves.Passive
MeasurementType
Spectrum
TemporalDescription
TimeSpan
StartDate
2006-10-27 20:24:42Z
RelativeStopDate
-P1D
Cadence
PT1M
SpectralRange
RadioFrequency
ObservedRegion
Heliosphere.Remote1AU
ObservedRegion
Heliosphere.Inner
ObservedRegion
Jupiter
Keywords
Dynamic Spectrogram
Spectrogram
Solar radio burst
Type II Solar radio burst
Type III Solar radio burst
Jupiter DAM
Jovian Decametric Radiation
Parameter #1
Name
Epoch
ParameterKey
Epoch
Description

Interval-centered time tag. Time since 0 AD.

Cadence
PT1M
Units
ms
Support
SupportQuantity
Temporal
Parameter #2
Name
E-Avg Inten>Bgnd (Ahead)
ParameterKey
avg_intens_ahead
Description

Ahead: Electric field avg intensity (dB above bgnd, 367 freqs 2.6 kHz - 16.025 MHz, inverted frequency order)

Units
dB>bgnd
Wave
WaveType
PlasmaWaves
Qualifier
Magnitude
Qualifier
Pseudo
WaveQuantity
Intensity
FrequencyRange
SpectralRange
RadioFrequency
Low
2.6
High
16025
Units
kHz
Parameter #3
Name
E-Avg Inten>Bgnd (Ahead)
ParameterKey
avg_intens_ahead_noninvert
Description

Ahead: Electric field avg intensity (normal frequency order)

Units
dB>bgnd
Wave
WaveType
PlasmaWaves
Qualifier
Magnitude
Qualifier
Pseudo
WaveQuantity
Intensity
FrequencyRange
SpectralRange
RadioFrequency
Low
2.6
High
16025
Units
kHz
Parameter #4
Name
Bgnd Avg Inten (Ahead)
ParameterKey
background_ahead
Description

Ahead: Background Intensity (normal frequency order)

Units
dB
Wave
WaveType
PlasmaWaves
Qualifier
Magnitude
Qualifier
Pseudo
WaveQuantity
Intensity
FrequencyRange
SpectralRange
RadioFrequency
Low
2.6
High
16025
Units
kHz
Parameter #5
Name
E-Avg Inten>Bgnd (Behind)
ParameterKey
avg_intens_behind
Description

Behind: Electric field avg intensity (dB above bgnd, 367 log-spaced freqs 2.6 kHz - 16.025 MHz, normal frequency order)

Units
db>bgnd
Wave
WaveType
PlasmaWaves
Qualifier
Magnitude
Qualifier
Pseudo
WaveQuantity
Intensity
FrequencyRange
SpectralRange
RadioFrequency
Low
2.6
High
16025
Units
kHz
Parameter #6
Name
Bgnd Avg Inten (Behind)
ParameterKey
background_behind
Description

Behind: Background Intensity (normal frequency order)

Units
dB
Wave
WaveType
PlasmaWaves
Qualifier
Magnitude
Qualifier
Pseudo
WaveQuantity
Intensity
FrequencyRange
SpectralRange
RadioFrequency
Low
2.6
High
16025
Units
kHz
Parameter #7
Name
Frequency
ParameterKey
frequency
Description

Frequency

Units
kHz
Support
SupportQuantity
Other