The Air Force Grant documented here directly resulted in the purchase of hardware eight VLF receivers. Five of these receivers have been deployed successfully and are operating regularly and reliably. The remaining are pending imminent deployment. The new receiver sites have enabled Stanford to jumpstart a fully-funded THY program, with funds from Stanford University and NASA, which will enable a great expansion of this network, and in addition, provides a ...
The overall objectives of this work are to: * Quantify the requirements for controlled precipitation of radiation belt particles in order to mitigate space particle effects * Address the issue of coupling of space based antennas to the surrounding magnetoplasma for use in system design * Determine radiated power from single transmitting element The completion of these goals requires the design of antenna-in-plasma codes which simulate the interaction of radiating ...
Stanford University carried out a detailed study of the following topics: 1) the optimum orbit for exciting the magnetospheric cavity resonance by a space-based ELF/VLF transmitter, 2) the antenna type and configuration necessary to excite various cavity modes with the radiated ELF/VLF waves, 3) the effects of Landau damping on the ELF/VLFL waves within the cavity, 4) the effectiveness of the radiated ELF/VLF cavity waves in precipitating energetic radiation belt ...
During the period of performance, Stanford University completed the development of integral equations describing the distribution of current along a dipole antenna radiating ELF/VLF waves in the magnetospheric cavity. It was found that the radiation resistance was much smaller near the lower-hybrid resonance frequency than previously believed. Stanford University included the effects of ion temperature in the plasma dielectric tensor. It was found that the ion temperature had a first-order ...
During the period of performance Stanford University: 1. Developed an analytical model describing the distribution of current along a dipole antenna radiating ELF/VLF waves in the magnetospheric cavity. It was found that the antenna orientation had an important effect upon the radiation characteristics of the dipole antenna. 2. Mapped out the power distribution of ELF/VLF waves radiated by space-based transmitters throughout the magnetospheric cavity for a range of wave normal ...
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