Application of radio phase modes to modification and remote sensing of the atmosphere and space

Details Application of radio phase modes to modification and remote sensing of the atmosphere and space Application of radio phase modes to modification and remote sensing of the atmosphere and space

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsa11b..08i&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SA11B-08

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[0619] Electromagnetics / Electromagnetic Theory, [2403] Ionosphere / Active Experiments, [2494] Ionosphere / Instruments And Techniques, [6969] Radio Science / Remote Sensing

Scientific paper

Radio phase modes are a low-frequency electromagnetic wave (radio) manifestation of photon orbital angular momentum (OAM) modes. At optical (laser) wavelengths OAM is an active area of theoretical and experimental research. Theory and modelling of radio phase modes show they may also easily be generated and, under certain conditions, detected with modern radio antenna arrays. Transimission of radio phase modes has been attempted using the HAARP HF transmitter in Alaska and the Jicamarca VHF radar in Peru. The HAARP experiment was designed to search for ionospheric modification effects of phase modes, while the Jicamarca experiment explored the possibility of using phase modes for remote sensing. Further work at Jicamarca will be aimed at verifying phase mode transmission and detection capabilities by using the moon as a reflector. Other potential applications of phase modes include the detection of radio OAM generated by astrophysical sources and their use in communications as a way of transmitting multiple signals at a single frequency.

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