Overview of Radio Plasma Imaging (RPI)
RPI transmits coded EM waves and receives resulting echoes at
3 kHz to 3 MHz
- Uses advanced digital processing techniques (pulse compression &
spectral integration)
RPI uses a tri-axial orthogonal antenna system
- 500 meter tip-to-tip x and y axis dipole antennas
- 20 meters tip-to-tip z axis dipole antenna
- Transmitter can utilize either x or y or both x and y axis antennas
- Echo reception on all three axes
Basic RPI measurements of an echo at a selected frequency
- Amplitude
- Time delay (distance or range from target)
- Direction
- Wave polarization (ordinary or extra-ordinary)
- Doppler shift and frequency dispersion
In situ density and resonances measurements