2.2.2 spase://VWO/NumericalData/Hawkeye/VLF/PT22S Hawkeye Electric and Magnetic Field Radio Frequency Spectrum Analyzer High Time Resolution HK_H0_VLF Hawkeye 1 VLF instrument CDFs at NASA's CDAWeb 2012-02-24T17:39:00Z The CDF file contains approximately 22 second time resolution Electric and Magnetic field data, average magnetic field magnitude, and orbital position data from Hawkeye 1. The VLF experiment measured electric and magnetic fields using a 42.45-m electric dipole (tip-to-tip) which extended perpendicular to the spin axis and a search coil antenna deployed 1.58 m from the spacecraft. The electric field spectrum measurements were made in 16 logarithmically spaced frequency channels extending from 1.78 Hz to 178 kHz, and dc electric fields were also measured. The bandwidth of these channels varied from 7.5% to 30% depending on center frequency. Channel sensitivity and dynamic range were 1E-6 V/m and 100 dB, respectively. A wideband receiver was also used, with two selectable bandwidth ranges: 0.15 to 10 kHz or 1 to 45 kHz. The magnetic field spectrum was measured in eight discrete, logarithmically spaced channels from 1.78 Hz to 5.62 kHz. The bandwidth of these channels varied from 7.5% to 30% depending on frequency. The dynamic range was 100 dB, and the sensitivity ranged from 0.1 nT at 1.78 Hz to 3.4E-4 nT at 5.62 kHz. The wideband receiver described above could be used with the magnetic antenna. Each discrete channel was sampled once every 11.52 s. Users please acknowledge the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and Hawkeye VLF instrument Principal Investigator Don Gurnett. spase://SMWG/Person/Donald.A.Gurnett PrincipalInvestigator Hawkeye Spacecraft http://nssdc.gsfc.nasa.gov/hawkeye/hawkeye.html Hawkeye page maintained by NASA GSFC with science and instrument descriptions, data, software, and publication lists en NSSDC's Master Catalog http://nssdc.gsfc.nasa.gov/nmc/experimentDisplay.do?id=1974-040A-03 Information about the ELF/VLF Receivers experiment on the Hawkeye 1 mission. spase://VWO/NumericalData/Hawkeye/VLF/CDF_PT22S spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Online Open FTP access to files at SPDF ftp://spdf.gsfc.nasa.gov/pub/data/hawkeye/h0/vlf/ FTP access to repository of Hawkeye VLF data in CDF format at NASA CDAWeb. en HTTP access to files at SPDF http://spdf.gsfc.nasa.gov/pub/data/hawkeye/h0/vlf/ In CDF via HTTP from SPDF CDAWeb http://cdaweb.gsfc.nasa.gov/pre_istp/ HK_H0_VLF Repository of Hawkeye data in CDF format at NASA CDAWeb, accessible via web interface. Name of the data resource: HK_H0_VLF. en CDF None Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and Hawkeye 1 VLF instrument Principal Investigator Don Gurnett. Calibrated spase://SMWG/Instrument/Hawkeye/VLF Waves.Passive Spectrum 1974-06-08T06:45:10Z 1978-04-26T15:59:05Z PT22S RadioFrequency Earth.Magnetosphere Earth.Magnetosphere.Polar Earth.NearSurface.AuroralRegion Earth.NearSurface.PolarCap Heliosphere.Inner Dynamic Spectrogram Spectrogram AKR Auroral hiss Auroral Kilometric Radiation Terrestrial Kilometric Radiation TKR Broad Band Electrostatic Noise Continuum radiation Ion Cyclotron Waves Solar radio burst Type III Solar radio burst Time Line Epoch Center Time of 22 sec averaging period PT22S ms Temporal Magnetic Field Spectral Power Density b_spd Magnetic Field Spectral Power Density at 8 Freq (2 - 5620 Hz): 1.78 Hz, 5.62 Hz, 17.8 Hz, 56.2 Hz, 178 Hz, 562 Hz, 1780 Hz, 5620 Hz nT**2/Hz PlasmaWaves Magnitude Pseudo Intensity RadioFrequency 2 5620 Hz Electric Spectral Power Density e_spd Electric Spectral Power Density at 16 Frequencies (2 Hz - 178 kHz): 1.80 Hz, 5.60 Hz, 17.8 Hz, 56.2 Hz, 178 Hz, 562 Hz, 1780 Hz, 5620 Hz, 13300 Hz, 17800 Hz, 23700 Hz, 31100 Hz, 42200 Hz, 56200 Hz, 100000 Hz, 178000 Hz (V/m)(V/m)/Hz PlasmaWaves Magnitude Pseudo Intensity RadioFrequency 2 178000 Hz Average Magnetic Field Magnitude BAVE Average magnetic Field Magnitude Magnetic s/c position in SM lat/local time pos_mag Hawkeye position in Earth radii, SM magnetic latitude, SM magnetic local time 3 RE 1 Re 0.0 22.0 SM_LAT 2 Deg -90.0 90.0 SM_LT 3 Hour 0.0 24.0 Positional Cartesian Position GSM pos_GSM Cartesian Position GSM RE Cartesian GSM 3 X_GSM 1 Y_GSM 2 Z_GSM 3 -22.0 22.0 Positional Active vs Passive Indicator activity_index Active (=1) vs Passive (=0) Indicator. Active emissions only affect the Electric Field measurements at 17.8 Hz and 56.8 Hz Other Frequency (E field) e_freq 16 Electric Field assoc Frequencies (2Hz - 178kHz): 1.8 5.6 17.8 56.2 178.0 562.0 1780.0 5620.0 13300.0 17800.0 23700.0 31100.0 42200.0 56200.0 100000.0 178000.0 Hz Other Freq band width (E field) e_freq_delta Electric Field associated Frequency band width (16 channels): 1.4 0.8 6.6 13.2 35.0 151.4 415.1 1178.0 439.0 493.5 778.5 581.0 779.5 1129.5 2464.5 2804.5 Hz Other Noise associated with E field e_noise Electric Field associated Noise (16 channels) (V/m)(V/m)/Hz PlasmaWaves Magnitude Pseudo Intensity RadioFrequency 2 178000 Hz Frequencies (B field) b_freq 8 Associated Magnetic Field Freq (1.78 - 5620 Hz): 1.78 5.62 17.8 56.2 178.0 562.0 1780.0 5620.0 Hz Other Freq Band Width (B field) b_freq_delta 8 Freq Band widths B field (1.565 - 1266 Hz): 1.565 0.96 6.64 12.04 36.565 154.9 517.0 1266.0 Hz Other Noise associated with B field b_noise Noise associated with B field (8 - channels): 0.004425 4.853E-5 7.793E-7 5.72E-8 8.993E-9 8.854E-10 3.912E-10 3.784E-10 nT**2/Hz PlasmaWaves Magnitude Pseudo Intensity RadioFrequency 2 5620 Hz