The Use of Plasma Fluid Finite Difference Time Domain (PF-FDTD) Models In the Analysis of the E-Winds Plasma Impedance Probe Observations <p> HR: <span class="hr"> 1330h<br></span> AN: <span class="an"> SA12B-1093 <a href="../absbook/fm03-SA12B.pdf">[PDF]</a><br></span> TI: <span class="ti"> The Use of Plasma Fluid Finite Difference Time Domain (PF-FDTD) Models In the Analysis of the E-Winds Plasma Impedance Probe Observations <br></span> AU: <span class="au"> * Ward, J <br></span> EM: <span class="em"> jward@cc.usu.edu<br></span> AF: <span class="af"> Utah State University Department of Electrical and Computer Engineering, 4120 Old Main Hill, Logan, UT 84322 <br></span> AU: <span class="au"> Swenson, C <br></span> EM: <span class="em"> Charles.Swenson@usu.edu<br></span> AF: <span class="af"> Utah State University Department of Electrical and Computer Engineering, 4120 Old Main Hill, Logan, UT 84322 <br></span> AU: <span class="au"> Carlson, C <br></span> EM: <span class="em"> chad.carlson@sdl.usu.edu<br></span> AF: <span class="af"> Utah State University Department of Electrical and Computer Engineering, 4120 Old Main Hill, Logan, UT 84322 <br></span> AB: <span class="ab"> Utah State University has developed a Plasma Fluid Finite Difference Time Domain (PF-FDTD) model to simulate an antenna in magnetized space plasma. This simulation tool, based on the five moment Maxwellian plasma fluid equations, allows the impedance of an antenna to be determined for varying plasma parameters. This paper will compare the Plasma Fluid Finite Difference Time Domain (PF-FDTD) model to the experimental data of the E-Winds mission, validating the model and improving the accuracy of the electron density, collision frequency, and temperature measurements. Analytic closed form theories for the impedance of an antenna in a plasma predicts a large resistive component for frequencies around the upper hybrid frequency. These were not observed in the E-winds data were discrepancies of an order of magnitude are observed in some cases. Signatures of kinetic effects on antenna impedance are observed E-winds data set which cannot be reproduced by the PF-FDTD model. <br></span> DE: <span class="de"> 2439 Ionospheric irregularities<br></span> DE: <span class="de"> 2443 Midlatitude ionosphere<br></span> DE: <span class="de"> 2483 Wave/particle interactions<br></span> DE: <span class="de"> 2494 Instruments and techniques<br></span> SC: <span class="sc"> SPA - Aeronomy [SA]<br></span> MN: <span class="mn"> 2003 Fall Meeting<br></span></p></body></html>