The PO_H1_PWI CDF files contain spectral densities of magnetic and electric field measurements from the Sweep Frequency Receiver-A and B. These files also contain correlation, electron cyclotron frequency, upper hybrid frequency and electron number density data. A full frequency sweep for the SFR takes about 33 seconds. From about 12.5 kHz to 800 kHz a full frequency spectrum can be obtained every 2.4 sec in the log mode. There are 224 SFR frequency bands, logarithmically spaced. When SFR_MODE is Linear, the 448 linear frequency bands are mapped to 224 logarithmic bands. The Polar Sweep Frequency Receiver-A (SFR-A) made use of either the Eu (130 m, spin-plane) or Ez (14 m, spin axis) two-sphere electric dipole antennas. Between March 25, 1996 and May 26, 1996, the Eu antenna was the default antenna, from May 27, 1996 through February 9, 1997 the Ez antenna was used and from February 10, 1997 until September 17, 1997 the SFR-A returned to using the Eu antenna. The SFR-A receiver spanned the frequency range from 26 Hz to 808 kHz in 5 bands: 26-200 Hz, 0.2 - 1.6 kHz, 1.7 - 12.6 kHz, 13-100 kHz, 100-808 kHz. The Polar PWI Sweep Frequency Receiver-B (SFR-B) collected data from March 1996 to September 1997. The SFR-B used the magnetic loop antenna (mounted on a 6m boom and oriented parallel to the Eu antenna). The SFR-B receiver spanned the frequency range from 26 Hz to 808 kHz in 5 bands: 26-200 Hz, 0.2 - 1.6 kHz, 1.7 - 12.6 kHz, 13-100 kHz, 100-808 kHz.
Version:2.6.0
The PO_H1_PWI CDF files contain spectral densities of magnetic and electric field measurements from the Sweep Frequency Receiver-A and B. These files also contain correlation, electron cyclotron frequency, upper hybrid frequency and electron number density data. A full frequency sweep for the SFR takes about 33 seconds. From about 12.5 kHz to 800 kHz a full frequency spectrum can be obtained every 2.4 sec in the log mode. There are 224 SFR frequency bands, logarithmically spaced. When SFR_MODE is Linear, the 448 linear frequency bands are mapped to 224 logarithmic bands. The Polar Sweep Frequency Receiver-A (SFR-A) made use of either the Eu (130 m, spin-plane) or Ez (14 m, spin axis) two-sphere electric dipole antennas. Between March 25, 1996 and May 26, 1996, the Eu antenna was the default antenna, from May 27, 1996 through February 9, 1997 the Ez antenna was used and from February 10, 1997 until September 17, 1997 the SFR-A returned to using the Eu antenna. The SFR-A receiver spanned the frequency range from 26 Hz to 808 kHz in 5 bands: 26-200 Hz, 0.2 - 1.6 kHz, 1.7 - 12.6 kHz, 13-100 kHz, 100-808 kHz. The Polar PWI Sweep Frequency Receiver-B (SFR-B) collected data from March 1996 to September 1997. The SFR-B used the magnetic loop antenna (mounted on a 6m boom and oriented parallel to the Eu antenna). The SFR-B receiver spanned the frequency range from 26 Hz to 808 kHz in 5 bands: 26-200 Hz, 0.2 - 1.6 kHz, 1.7 - 12.6 kHz, 13-100 kHz, 100-808 kHz.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Donald.A.Gurnett | |||
| 2. | GeneralContact | spase://SMWG/Person/J.Douglas.Menietti | |||
| 3. | MetadataContact | spase://SMWG/Person/Lee.Frost.Bargatze |
A Polar PWI page is maintained at the University of Iowa with descriptions of interpretation issues, user's guides, data availability tables, a form for creating summary plots and access to pregenerated dynamic spectrograms.
Descriptions of PWI receiver and antenna modes.
FTP access to repository of Polar PWI SFR A and B CDFs at NASA CDAWeb.Name of the data resource: PO_H1_PWI
In CDF via HTTP from SPDF
Repository of Polar PWI data in CDF format at NASA CDAWeb, accessible via web interface. Name of the data resource: PO_H1_PWI.
Web Service to this product using the HAPI interface.
Time, begin time of SFR 1 spectrum
Antenna (SFRA) 0=Eu, 1=Ez, 2=L, 3=Bz
Antenna (SFRB) 0=Eu, 1=Ev, 2=Ez, 3=L
SFR Mode (0 = Log, 1 = Linear). Linear mode data is mapped to Log Mode
Number of SFR 2 Records. 3217
Number of SFR 3 Records. 6432
Number of SFR 4 and 5 Records. 22518
Number of fUHR/Ne Records. 148
Number of Fce Records. 14065
Start Time of SFR4 and SFR 5 Spectra
Frequencies, 64 (104069.50-807814.25) Hz. 104069.5 106212.88 110512.75 114830.5 116996.0 121340.25 125702.5 130082.75 134481.25 138898.25 143333.25 147787.0 152259.5 156750.5 163522.5 168061.0 174904.75 179491.5 186408.0 191043.75 198034.25 205069.75 212150.5 219277.25 226450.25 233670.0 240936.75 248251.25 258079.0 265506.5 275486.75 283030.0 293166.0 303393.0 313712.0 324124.25 334631.0 345233.75 355933.5 369477.0 380370.25 394167.75 405321.75 419411.75 433668.75 448095.25 462694.5 477470.0 495437.0 510610.5 525970.5 544653.5 563616.0 582864.25 602405.0 622245.0 642390.75 662949.75 683629.25 708287.25 729787.5 755308.5 781312.5 807814.25
Frequencies, 64 (13008.69-100976.78) Hz. 13008.69 13276.61 13814.09 14353.81 14624.5 15167.53 15712.31 16260.34 16810.16 17362.28 17916.66 18473.38 19032.44 19593.81 20440.31 21007.63 21863.09 22436.44 23301.0 23880.47 24754.28 25633.72 26518.81 27409.66 28306.28 29208.75 30117.09 31031.41 32259.88 33188.31 34435.84 35378.75 36645.75 37924.13 39214.0 40515.53 41828.88 43154.22 44491.69 46180.88 47546.28 49270.97 50665.22 52426.47 54208.59 56011.91 57836.81 59683.75 61929.63 63826.31 65746.31 68081.69 70452.0 72858.03 75300.63 77780.63 80298.84 82856.22 85453.66 88535.91 91223.44 94413.53 97664.06 100976.78
Start Time of SFR 3 Spectrum
Frequencies, 32 (1659.58-12622.10) Hz. 1659.58 1794.23 1895.94 2032.54 2170.29 2309.17 2449.23 2625.95 2804.55 2985.06 3204.21 3426.21 3651.09 3878.93 4148.54 4422.34 4740.52 5064.44 5394.28 5772.61 6158.87 6553.31 7001.49 7460.47 7978.29 8510.21 9107.25 9722.58 10357.03 11066.99 11801.69 12622.1
Start Time of SFR2 Spectrum
Frequencies, 32 (207.45-1577.76) Hz. 207.45 224.28 236.99 254.07 271.29 288.65 306.15 328.24 350.57 373.13 400.53 428.28 456.39 484.87 518.57 552.79 592.56 633.06 674.28 721.58 769.86 819.16 875.19 932.56 997.29 1063.78 1138.41 1215.32 1294.63 1383.37 1475.21 1577.76
Frequencies, 32 (26.77-192.86) Hz. 26.77 28.82 30.37 32.44 34.54 36.65 38.78 41.47 44.18 46.93 50.26 53.63 57.05 60.51 64.61 68.76 73.6 78.51 83.52 89.26 95.11 101.09 107.89 114.84 122.68 130.73 139.77 149.07 158.66 169.39 180.48 192.86
Spectral Density of Elec. Field at 64 freq., 104069.50-807814.25 Hz (SFR5 A)
Spectral Density of Elec. Field at 64 freq., 13008.69-100976.78 Hz (SFR4 A)
Spectral Density of Elec. Field at 32 freq., 1659.58-12622.10 Hz (SFR3 A)
Spectral Density of Elec. Field at 32 freq., 207.45-1577.76 Hz (SFR2 A)
Spectal Density of Elec. Field at 32 freq., 26.77-192.86 Hz (SFR1 A)
Spectral Density of Mag. Field at 64 freq., 104069.50-807814.25 Hz (SFR5 B)
Spectral Density of Mag. Field at 64 freq., 13008.69-100976.78 Hz (SFR4 B)
Spectral Density of Mag. Field at 32 freq., 1659.58-12622.10 Hz (SFR3 B)
Spectral Density of Mag. Field at 32 freq., 207.45-1577.76 Hz (SFR2 B)
Spectral Density of Mag. Field at 32 freq., 26.77-192.86 Hz (SFR1 B)
Phase Angle at 64 freq., 104069.50-807814.25 Hz (SFR5 Phase)
Phase Angle at 64 freq., 13008.69-100976.78 Hz (SFR4 Phase)
Phase Angle at 32 freq., 1659.58-12622.10 Hz (SFR3 Phase)
Phase Angle at 32 freq., 207.45-1577.76 Hz (SFR2 Phase)
Phase Angle at 32 freq., 26.77-192.86 Hz (SFR1 Phase)
Correlation at 64 freq., 104069.50-807814.25 Hz (SFR4 Corr)
Correlation at 64 freq., 13008.69-100976.78 Hz (SFR4 Corr)
Correlation at 32 freq., 1659.58-12622.10 Hz (SFR3 Corr)
Correlation at 32 freq., 207.45-1577.76 Hz (SFR2 Corr)
Correlation at 32 freq., 26.77-192.86 Hz (SFR1 Corr)
Time of Fce
Electron Cyclotron Frequency Fce
Time of fUHR/Ne
Upper Hybrid Resonance Frequency fUHR
Electron Number Density Ne