An experimental 225 GHz pulsed coherent radar

An experimental 225 GHz pulsed coherent radar

An experimental coherent pulsed radar operating at 225 GHz is described. The system uses a pulsed, phase-locked extended interaction oscillator transmitter and frequency divided by 4 subharmonic mixer pumped by a phase-locked Gunn oscillator as the receiver. A quasi-optical circular polarization dup...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1991-03, Vol.39 (3), p.555-562
Hauptverfasser: McMillan, R.W., Trussell, C.W., Bohlander, R.A., Butterworth, J.C., Forsythe, R.E.
Format: Artikel
Sprache:eng
Schlagworte:
Frequency conversion
Gunn devices
Oscillators
Polarization
Radar antennas
Radar tracking
Receiving antennas
Target tracking
Transmitters
Transmitting antennas
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Zusammenfassung:An experimental coherent pulsed radar operating at 225 GHz is described. The system uses a pulsed, phase-locked extended interaction oscillator transmitter and frequency divided by 4 subharmonic mixer pumped by a phase-locked Gunn oscillator as the receiver. A quasi-optical circular polarization duplexer combines transmitter and receiver signals into the same antenna. Results presented include the detection of targets out to ranges of 3.5 km and observations of Doppler spectra of trucks and tracked vehicles which show contributions from both body and tracks.< >
ISSN:0018-9480
1557-9670
DOI:10.1109/22.75300