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1) Dynamics Explorer 1 Magnetic Field Observations Triaxial Fluxgate Magnetometer (MAG-A) maxmize
Resource ID:spase://VMO/NumericalData/DE1/MAGA/PT0.062S
Start:1981-09-15 00:00:00 Observatory:Dynamics Explorer 1 Cadence:0.062 seconds
Stop:1991-02-18 00:00:00 Instrument:Magnetic Field Observations (MAG-A) Resource:NumericalData
Dynamics Explorer 1 Magnetic Field Observations Triaxial Fluxgate Magnetometer

2) DE 1 Magnetic Field Observations Triaxial Fluxgate Magnetometer (MAG-A) maxmize
Resource ID:spase://VMO/NumericalData/DE1/MAGA/PT6S
Start:1981-09-15 00:00:00 Observatory:Dynamics Explorer 1 Cadence:6 seconds
Stop:1991-02-18 00:00:00 Instrument:Magnetic Field Observations (MAG-A) Resource:NumericalData
Dynamics Explorer 1 Magnetic Field Observations Triaxial Fluxgate Magnetometer at 6 second resolution.

3) Dynamics Explorer 1 Plasma Waves Instrument DC electric field data maxmize
Resource ID:spase://VMO/NumericalData/DE1/PWI/DCEF/PT1S
Start:1981-09-16 00:00:00 Observatory:Dynamics Explorer 1 Cadence:1 second
Stop:1984-06-24 00:00:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Plasma Waves Instrument DC electric field data

4) Dynamics Explorer 1 Plasma Waves Instrument Low Frequency Receiver A data maxmize
Resource ID:spase://VMO/NumericalData/DE1/PWI/LFCA/PT1S
Start:1981-09-16 00:00:00 Observatory:Dynamics Explorer 1 Cadence:1 second
Stop:1984-06-24 00:00:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Plasma Waves Instrument Low Frequency Receiver A data

5) Dynamics Explorer 1 Plasma Waves Instrument Low Frequency Receiver B data maxmize
Resource ID:spase://VMO/NumericalData/DE1/PWI/LFCB/PT1S
Start:1981-09-16 00:00:00 Observatory:Dynamics Explorer 1 Cadence:1 second
Stop:1984-06-24 00:00:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Plasma Waves Instrument Low Frequency Receiver B data

6) Dynamics Explorer 1 Plasma Waves Instrument Low Frequency Receiver Phase data maxmize
Resource ID:spase://VMO/NumericalData/DE1/PWI/LFCPH/PT1S
Start:1981-09-16 00:00:00 Observatory:Dynamics Explorer 1 Cadence:1 second
Stop:1984-06-24 00:00:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Plasma Waves Instrument Low Frequency Receiver Phase data

7) Dynamics Explorer 1 Plasma Waves Instrument Step Frequency Receiver A data maxmize
Resource ID:spase://VMO/NumericalData/DE1/PWI/SFRA/PT1S
Start:1981-09-16 00:00:00 Observatory:Dynamics Explorer 1 Cadence:1 second
Stop:1984-06-24 00:00:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Plasma Waves Instrument Step Frequency Receiver A data

8) Dynamics Explorer 1 Plasma Waves Instrument Step Frequency Receiver B data maxmize
Resource ID:spase://VMO/NumericalData/DE1/PWI/SFRB/PT1S
Start:1981-09-16 00:00:00 Observatory:Dynamics Explorer 1 Cadence:1 second
Stop:1984-06-24 00:00:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Plasma Waves Instrument Step Frequency Receiver B data

9) Dynamics Explorer 1 Plasma Waves Instrument Step Frequency Receiver Phase data maxmize
Resource ID:spase://VMO/NumericalData/DE1/PWI/SFRPH/PT1S
Start:1981-09-16 00:00:00 Observatory:Dynamics Explorer 1 Cadence:1 second
Stop:1984-06-24 00:00:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Plasma Waves Instrument Step Frequency Receiver Phase data

10) DE1 8 sec Position Data maxmize
Resource ID:spase://VWO/NumericalData/DynamicsExplorer1/Ephemeris/PT8S
Start:1981-09-16 05:21:48 Observatory:Dynamics Explorer 1 Cadence:8 seconds
Stop:1984-06-28 20:35:55 Instrument:DynamicsExplorer1 Positions Resource:NumericalData
Two Dynamics Explorer (DE) spacecraft were launched August 3, 1981, and placed into coplanar polar orbits with DE-1 in a highly elliptical orbit and DE-2 in a lower more circular orbit. The primary objective of the DE program was to investigate magnetosphere-ionosphere-atmosphere coupling processes. The DE mission provided a wealth of new information on a wide variety of magnetospheric plasma wave phenomena including auroral kilometric radiation, auroral hiss, Z mode radiation, narrow-band electromagnetic emissions associated with equatorial upper hybrid waves, whistler mode emissions, wave-particle interactions stimulated by ground VLF transmitters, equatorial ion cyclotron emissions, ion Bernstein mode emissions, and electric field turbulence along the auroral field lines. These files contain 8 second resolution emphemeris and spacecraft attitude parameters that coincide with DE-1 telemetry frames containing PWI lowrate data. These parameters are not to be taken as an authoritative set, but are convenient when working with PWI science data products. Most of these data are provided in the Geocentric Equatorial Inertial (GEI) TOD reference frame. The Z axis of the GEI frame is parallel to Earth's spin axis; the X axis points towards the First Point of Aries with the Y axis aligned so as to generate a right-handed coordinate system.

11) DE1 PWI Low Frequency Correlator Electric and Magnetic Field Spectral Density maxmize
Resource ID:spase://VWO/NumericalData/DynamicsExplorer1/PWI/LFC.PT0.25S
Start:1981-09-16 05:21:48 Observatory:Dynamics Explorer 1 Cadence:0.25 seconds
Stop:1984-06-28 05:53:31 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Two Dynamics Explorer (DE) spacecraft were launched August 3, 1981, and placed into coplanar polar orbits with DE-1 in a highly elliptical orbit and DE-2 in a lower more circular orbit. The primary objective of the DE program was to investigate magnetosphere-ionosphere-atmosphere coupling processes. The DE mission provided a wealth of new information on a wide variety of magnetospheric plasma wave phenomena including auroral kilometric radiation, auroral hiss, Z mode radiation, narrow-band electromagnetic emissions associated with equatorial upper hybrid waves, whistler mode emissions, wave-particle interactions stimulated by ground VLF transmitters, equatorial ion cyclotron emissions, ion Bernstein mode emissions, and electric field turbulence along the auroral field lines. These files contain calibrated, full resolution, data from the DE-1 Plasma Wave Instrument (PWI). This instrument was designed and built by the plasma wave group at The University of Iowa, Department of Physics and Astronomy, in collaboration with investigators at Stanford University's STAR Laboratory. It measured plasma wave phenomena and quasi-static electric fields using paired combinations of five PWI sensors: a 200m tip-to-tip long wire electric antenna deployed in the spacecraft spin plane, a 9m tip-to-tip tubular electric antenna deployed along the spacecraft spin axis, a short 0.6m electric antenna, mounted on the boom and oriented parallel to the long wire antenna, a magnetic loop antenna mounted on the boom and oriented to measure the component of the magnetic field parallel to the long wire antenna, and a magnetic search coil antenna, also mounted on a boom and oriented to measure the magnetic field parallel to the spacecraft spin axis. The PWI main electronics unit consisted of a Step Frequency Correlator (SFC), a Low Frequency Correlator (LFC), a Wideband Analog Receiver (WBR) and a Linear Wave Receiver (LWR). Only the LFC data are included in these files. The SFC data were provided in a companion fileset. A dataset containing available high rate WBR LWR data may be provided in future archive products. The LFC consisted of two receivers (LFR-A and LFR-B) with 8 analog channels each. The analog channels were centered at 1.78, 3.12, 5.62, 10.0, 17.8, 31.2, 56.2 and 100 Hz. Each channel's band-edge was at +/-15% of the center value. Each LFR in the LFC could be connected to either the Ex, Es, Ez, or H antenna during an 8 second major frame. In addition, the Low Frequency Correlator provided in-phase and quadrature-phase correlations of signals from any selected antenna pair. Phase data are not provided in this file set.

12) Dynamics Explorer 1 Plasma Wave Instrument Step Frequency and Low Frequency Correlator Spectrogram Plots maxmize
Resource ID:spase://VWO/DisplayData/DynamicsExplorer1/PWI/SFC.LFC.PT409M
Start:1981-09-16 05:20:00 Observatory:Dynamics Explorer 1 Cadence:
Stop:1984-06-28 23:20:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:DisplayData
This dataset contains dynamic spectrogram PNG plots of the DE-1/PWI Step Frequency Correlator and Low Frequency Correlator data. Each plot spans one orbital period (6 hours 49 minutes). There are three types of files in this dataset. Those derived from data using: 1) the spin-plane 200m electric antenna (Ex), 2) the spin-axis 8m electric antenna (Ez) and 3) the magnetic antennas (B-H) consisting of a 1.0m^2 loop antenna in the spin plane and a search coil on the spin axis. Each image consists of two panels. The title above each panel indicates the instrument, antenna and frequency range. Each panel is a plot of the power spectral density of received signal (color scale) as a function of operating frequency (in a logarithmic scale on the vertical axis) and time (horizontal axis). Beneath the time labels on the horizontal axis of the spectrograms are ephemeris data: position of the spacecraft in radial distance (Earth radii), McIlwain L-shell, magnetic local time, and geomagnetic latitude. Overlaid on each image are traces of the electron cyclotron frequencies. The file naming convention is: de1_pwi_0000_YYYYMMDD_HHMM_AAA.png where: 0000 - Replace with orbit number YYYYMMDD - Replace with date HHMM - Replace with start time AAA - Replace with antenna string

13) DE1 PWI Step Frequency Correlator Electric and Magnetic Field Spectral Density maxmize
Resource ID:spase://VWO/NumericalData/DynamicsExplorer1/PWI/SFC.PT0.25S
Start:1981-09-16 05:21:48 Observatory:Dynamics Explorer 1 Cadence:0.25 seconds
Stop:1984-06-28 20:35:55 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:NumericalData
Two Dynamics Explorer (DE) spacecraft were launched August 3, 1981, and placed into coplanar polar orbits with DE-1 in a highly elliptical orbit and DE-2 in a lower more circular orbit. The primary objective of the DE program was to investigate magnetosphere-ionosphere-atmosphere coupling processes. The DE mission provided a wealth of new information on a wide variety of magnetospheric plasma wave phenomena including auroral kilometric radiation, auroral hiss, Z mode radiation, narrow-band electromagnetic emissions associated with equatorial upper hybrid waves, whistler mode emissions, wave-particle interactions stimulated by ground VLF transmitters, equatorial ion cyclotron emissions, ion Bernstein mode emissions, and electric field turbulence along the auroral field lines. These files contain calibrated, full resolution, data from the DE-1 Plasma Wave Instrument (PWI). This instrument was designed and built by the plasma wave group at The University of Iowa, Department of Physics and Astronomy, in collaboration with investigators at Stanford University's STAR Laboratory. It measured plasma wave phenomena and quasi-static electric fields using paired combinations of five PWI sensors: a 200m tip-to-tip long wire electric antenna deployed in the spacecraft spin plane, a 9m tip-to-tip tubular electric antenna deployed along the spacecraft spin axis, a short 0.6m electric antenna, mounted on the boom and oriented parallel to the long wire antenna, a magnetic loop antenna mounted on the boom and oriented to measure the component of the magnetic field parallel to the long wire antenna, and a magnetic search coil antenna, also mounted on a boom and oriented to measure the magnetic field parallel to the spacecraft spin axis. The PWI main electronics unit consisted of a Step Frequency Correlator (SFC), a Low Frequency Correlator (LFC), a Wideband Analog Receiver (WBR) and a Linear Wave Receiver (LWR). Only the SFC data are included in these files. The LFC data were provided in a companion fileset. A dataset containing available high rate WBR LWR data may be provided in the future. The SFC consisted of two Step Frequency Receivers (SFR-A and SFR-B) which provided amplitude measurements of the electric and magnetic fields from 100 Hz to 400 kHz and in-phase and quadrature-phase correlations of signals from any selected antenna pair. Phase data are not provided in these datasets.

14) Dynamics Explorer 1 Plasma Wave Instrument Sweep Frequency Receiver-A 2 Hour Dynamic Spectrogram Plots maxmize
Resource ID:spase://VWO/DisplayData/DynamicsExplorer1/PWI/SFR.A.PT2H
Start:1981-09-16 05:20:00 Observatory:Dynamics Explorer 1 Cadence:
Stop:1984-06-28 23:20:00 Instrument:Dynamics Explorer 1 Plasma Waves Instrument (PWI) Resource:DisplayData
This dataset contains two hour duration dynamic spectrogram GIF plots of the DE-1/PWI SFR-A (electric antenna). Each image is a plot of the power spectral density (V^2 m^-2 Hz^-1) of received signal (color scale) as a function of operating frequency (in a logarithmic scale on the vertical axis) and time (horizontal axis). At the top center of each plot is a title indicating the University of Iowa, the instrument, and the date. On the upper left is an indication of the receiver used, the upper right is the orbit number. Immediately below the title is a horizontal bar and the label "WB" on the extreme left indicating the time duration when wideband data were acquired. Beneath the time labels on the horizontal axis of the spectrogram are ephemeris data: position of the spacecraft in radial distance (Earth radii), McIlwain L-shell, magnetic local time, and geomagnetic latitude. Overlaid on each image are traces of the electron, hydrogen and oxygen cyclotron frequencies. Running along the left edge of the plot next to the frequency scale is the date represented as two digit year, day of year, hour and minute of the start of the plot.

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