@inproceedings{oai:jaxa.repo.nii.ac.jp:00006398, author = {Swenson, Charles M. and Ward, Jeffrey and Carlson, Chad and Barjatya, Aroh and Fish, Chad and Swenson, Charles M. and Ward, Jeffrey and Carlson, Chad and Barjatya, Aroh and Fish, Chad}, book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: 9th Spacecraft Charging Technology Conference}, month = {Aug}, note = {The electrical impedance of an antenna exposed to the space environment is dependent upon the parameters of the space plasma in which it is immersed. This effect can be used as a diagnostics for electron density, collision frequencies, etc. Utah State University has recently flown a number of Plasma Impedance Probes on sounding rockets with NASA including dipoles, monopoles, and patch antennas. There are several analytic theories for the impedance of monopole or dipole antenna in space plasma. There are no analytic theories for a patch antenna. Utah State has developed a Plasma Fluid Finite Difference Time Domain (PF-FDTD) simulation that can be used to model various antenna geometries. Antenna impedance data from various geometries are presented and compared with analytic and the PF-FDTD simulation. Preliminary results of the extraction of electron density, electron neutral collision frequency, and electron temperature along the rocket trajectory are presented., 資料番号: AA0049206083, レポート番号: JAXA-SP-05-001E}, pages = {727--732}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {Plasma Impedance Probe diagnostics: Model and data}, volume = {JAXA-SP-05-001E}, year = {2005} }