Hawkeye Electric and Magnetic Field Radio Frequency Spectrum Analyzer High Time Resolution

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.

Data and Resources

Additional Info

Field Value
Maintainer Donald A. Gurnett
Last Updated April 7, 2025, 17:01 (UTC)
Created April 3, 2025, 21:21 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id 28643c34-ddc2-4082-b816-17f94c8f99ac
harvest_source_id 44069cc8-d515-495f-9ea4-b67f76a0a7cb
harvest_source_title Science Discovery Engine
identifier https://doi.org/10.48322/etz7-wx98
modified 2025-04-07T16:41:33Z
programCode {026:000}
publisher NASA Space Physics Data Facility (SPDF) Coordinated Data Analysis Web (CDAWeb) Data Services
resource-type Dataset
source_datajson_identifier true
source_hash cec6f44593e75ad02a6d19dcbf8ff5fb114256575db5b4b5aa4729bbcc17a936
source_schema_version 1.1
temporal 1974-06-08/1978-04-26
theme {Heliophysics}