Ulf-Hf Electromagnetic Waves
Measurement Instruments
Measurement Definition: Radio receiver instrument, recording the wave received from the ground or other spacecraft, to determine how it was modified by its travel through the ionosphere.
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| RRI | Operational | The RRI measures wave electric fields in the 10Hz - 18MHz range, at magnitudes from 1 µV/m to 1 V/m to study the morphology and dynamics of ionospheric density structures, auroral wave-particle interactions, plasma nonlinear processes created by intense high frequency waves, and the mechanism of coherent wave backscatter. | n/a |  |