Version:2.2.9
NumericalData
ResourceID
spase://NASA/NumericalData/IMAGE/RPI/PGM/CDF/PT5M
ResourceHeader
ResourceName
IMAGE Radio Plasma Imager (RPI) Plasmagram data in CDF at NASA CDAWeb
ReleaseDate
2020-07-07 21:14:38Z
Description
Software suggested by the science team for CDF file visualization: (1) Plotting tool at the CDAWeb portal, (2) For analysis beyond static image inspection, including color scale optimization, zooming, text export, alternative data representations in physical units, detailed frequency and time information, overlaid model fpe and fce graphs, and EPS quality figures, use BinBrowser software at UML, http://ulcar.uml.edu/rpi.html
Acknowledgement
Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and RPI Principal Investigator Prof. B. W. Reinisch of the University of Massachusetts Lowell for making these CDF files available.
Contacts
InformationURL
Name
IMAGE RPI Instrument Page
URL
Description
IMAGE RPI Instrument page maintained by NASA GSFC with RPI facts, description, team, data, documents, discoveries, and related links sections
Language
en
InformationURL
Name
IMAGE RPI Instrument Page at UML
URL
Description
IMAGE RPI Instrument page maintained by University of Massachusetts Lowell with RPI description, team, software downloads, software user guides, access to CORPRAL automated prospecting results, mission planning tools and commanding guide, data model descriptions for Level 0 and 1, sonification files of 2003 Halloween storm, and useful links
Language
en
Association
AssociationID
AssociationType
Other
PriorIDs
spase://VWO/NumericalData/IMAGE/RPI/PGM.CDF.PT5M
spase://VSPO/NumericalData/IMAGE/RPI/PGM/CCSDS/PT5M
AccessInformation
RepositoryID
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb FTP access to IMAGE RPI wave measurements (plasmagrams)
URL
Description
FTP access to repository of IMAGE RPI Plasmagrams in CDF format at NASA CDAWeb.
Language
en
AccessURL
Name
CDAWeb access portal to IMAGE RPI Plasmagrams
URL
Description
Repository of IMAGE RPI Plasmagrams in CDF format at NASA CDAWeb, accessible via web interface. Name of the data resource: IM_K0_RPI.
Language
en
Format
CDF
Encoding
None
Acknowledgement
Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and RPI Principal Investigator Prof. B. W. Reinisch of the University of Massachusetts Lowell for making these CDF files available.
ProcessingLevel
Calibrated
ProviderProcessingLevel
Calibrated data in physical units. Spacecraft MET to UT is converted using history of IMAGE observatory clock drift.
InstrumentIDs
MeasurementType
Waves.Passive
MeasurementType
Spectrum
TemporalDescription
TimeSpan
StartDate
2000-03-26 07:51:50Z
StopDate
2005-12-18 07:40:47Z
Note
In Cadence below, the 5 minutes refers to the nominal interval between measurements. Actual cadence of passive measurement varied between 3 to 6 minutes depending on the RPI science plan and design of measurement schedules.
Cadence
PT5M
Exposure
PT72S
SpectralRange
RadioFrequency
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.NearSurface.Plasmasphere
ObservedRegion
Earth.NearSurface.AuroralRegion
ObservedRegion
Earth.NearSurface.PolarCap
ObservedRegion
Heliosphere.Inner
Keywords
Dynamic Spectrogram
Spectrogram
AKR
Auroral hiss
Auroral Kilometric Radiation
Chorus
Continuum radiation
Myriametric radiation
Plasmaspheric Hiss
Solar radio burst
Terrestrial Kilometric Radiation
TKR
Type II Solar radio burst
Type III Solar radio burst
UHR
Upper hybrid resonance
VLF Station
VLF Transmitter
Whistler
InputResourceID
Parameter #1
Name
Echo Amplitude
ParameterKey
Amplitude
Description
Echo Amplitude Image [nV].
Cadence
PT5M
Units
3/4 dBnV/m
Wave
WaveType
PlasmaWaves
Qualifier
Magnitude
Qualifier
Spectral
Qualifier
Pseudo
WaveQuantity
Intensity
FrequencyRange
SpectralRange
RadioFrequency
Low
3
High
1009
Units
kHz
Parameter #2
Name
Most Probable Amplitude
ParameterKey
MPA
Description
Units
3/4 dBnV/m
ValidMin
0
ValidMax
256
FillValue
-32768
Support
Parameter #3
Name
Frequency
ParameterKey
Frequency
Description
Cadence
PT5M
Units
kHz
Structure
Size
256
Description
Linear 1D array of frequency values, up to 256. Actual number of frequencies for which the voltage spectral density values were measured depends on the choice of frequency sweep (see "Number of Frequencies" parameter and its description below). The "256" value stated in Size is the upper limit.
Element
Name
Frequency
Index
-1
ValidMin
3
ValidMax
3000
FillValue
-1.0e+031
Support
Parameter #4
Name
Actual Number of Frequencies
ParameterKey
NumFreqs
Description
Number of frequencies. Detailed plasmagram picture has the original number of frequencies as specified by RPI measurement parameters. Frequency axis varies from plasmagram to plasmagram. Plasmagram thumbnails have a fixed frequency axis. The original plasmagram data often requires transformation into thumbnail format by averaging.
ValidMin
0
ValidMax
256
FillValue
-32768
Support
Parameter #5
Name
Time Line
ParameterKey
Epoch
Description
Plasmagram Time. The time in EPOCH referes to the beginning of the plasmagram, Use Duration_ms to obtain stop time of the run.
Caveats
The 5 minutes refers to the nominal interval between measurements. Actual cadence of passive measurement varied between 3 to 6 minutes depending on the RPI science plan and design of measurement schedules.
Cadence
PT5M
Units
ms
Support
Parameter #6
Name
Measurement Duration
ParameterKey
Duration_ms
Description
Duration of one plasmagram measurement.
Units
ms
Support
Parameter #7
Name
Base Gain
ParameterKey
BaseGain
Description
Instrument setting describing receiver gains in X/Y and Z channels, encoded. See data model description at http://ulcar.uml.edu/rpi.html for additional details on base gain decoding procedure.
ValidMin
0
ValidMax
16
FillValue
255
Support
Parameter #8
Name
Program Specifications
ParameterKey
ProgramSpecs
Description
List of 25 parameter values that specify RPI instrument configuration during the measurement. For further detail on parameter value interpretation see data model description document at http://ulcar.uml.edu/rpi.html.
Cadence
PT5M
Structure
Size
25
Description
Linear 1D array of values used to configure RPI instrument for a measurement mode.
Element
Support
Parameter #9
Name
Nadir crossing MET
ParameterKey
NadirMET
Description
Nadir crossing MET is the reference MET that uniquely identifies all RPI measurements. MET of the last Nadir crossing before the measurement starts.
Cadence
PT5M
Units
0.1 s
Support
Parameter #10
Name
Start MET
ParameterKey
StartMET
Description
Measurement start MET. Start MET is derived using the Nadir crossing MET and the time offset from the first packet header. Might not be unique due to telemetry losses.
Cadence
PT5M
Units
0.1s
Support
Parameter #11
Name
Operating Mode
ParameterKey
OpMode
Description
Calibration, Sounding, Thermal Noise, Relaxation, Whistler, Test Pattern.
Cadence
PT5M
Support
Parameter #12
Name
Number of Dopplers
ParameterKey
NumDopplers
Cadence
PT5M
Support
Parameter #13
Name
Pulse Repetition Rate
ParameterKey
RepetitionRate
Description
0.5 pps (1 pulse every 2 sec), 1 pps, 2 pps, 4 pps, 10 pps, 20 pps, 50 pps.
Cadence
PT5M
Units
Hz
Support
Parameter #14
Name
Xmtr Antenna Setting
ParameterKey
XmtrAntenna
Description
1= Radio Silence (no Tx), 2= X antenna only, 3= Y antenna only, 4= X+Y Linearly polarized, 5= X+Y Right Circularly Polarized, 6= X+Y Left Circularly Polarized, 7= X+Y Right/Left Alternated, 8= X+Y Lin/Lin90 Alternated.
Cadence
PT5M
Support
Parameter #15
Name
Coupler Mode
ParameterKey
Couplers
Description
0= OFF (untuned), 1= ON (tuned)
Cadence
PT5M
Support
Parameter #16
Name
Operating Mode
ParameterKey
Waveform
Description
1= 16-chip complementary, 2= FM Chirp, 3= Staggered Pulse Sequence, 4= Long Pulse, 5= Short Pulse, 6= 0.5 s Pulse, 7= 1.95 s Pulse, 8= 8-chip complementary, 9= 4-chip complementary.
Cadence
PT5M
Support
Parameter #17
Name
Gain Control
ParameterKey
GainControl
Description
0= Fixed Gain, 1= Auto Gain.
Cadence
PT5M
Support
Parameter #18
Name
Frequency Search Enabled
ParameterKey
FreqSearch
Description
0= Search of quiet frequencies disabled, 1= Search of quiet frequencies enabled.
Cadence
PT5M
Support
Parameter #19
Name
Peak Power Constraint
ParameterKey
PeakPower
Description
Total RPI Peak Power Consumption Constraint.
Cadence
PT5M
Units
Watts
Support
Parameter #20
Name
Actual Number of Ranges
ParameterKey
NumRanges
Description
Number of Ranges, depending on program setting and processing.
Cadence
PT5M
Support
Parameter #21
Name
Range
ParameterKey
Range
Description
Range readings for 151 range bins.
Cadence
PT5M
Units
Re
Support
Parameter #22
Name
Echo Azimuth angle
ParameterKey
Azimuth
Description
Echo Azimuth angle. Values 0 to 254 cover 0 to 360 degrees.
Cadence
PT5M
Units
360/254 deg
Support
Parameter #23
Name
Echo Zenith angle
ParameterKey
Zenith
Description
Cadence
PT5M
Units
deg
Support
Parameter #24
Name
Echo Doppler Number
ParameterKey
DopplerNumber
Description
Cadence
PT5M
Units
steps
Support
Parameter #25
Name
Doppler Translation
ParameterKey
DopplerTranslation
Description
Translates Doppler Number to an actual Doppler Frequency. The entries are calculated from program parameters.
Cadence
PT5M
Units
Hz
Support