Complete wave-vector directions of electromagnetic emissions: Application to INTERBALL-2 measurements in the nightside auroral zone

We present several newly developed methods for wave propagation analysis. T hey are based on simultaneous measurement of three magnetic field component s and one or two electric field components. The purpose of these techniques is to estimate complete wave vector direction and the refractive index. Al l the analysis results are validated by well defined simulated data. Propag ation analysis of natural emissions in the night-side auroral zone at high altitudes is done using the data of the MEMO (Mesures Multicomposantes des Ondes) experiment onboard INTERBALL-2. The results show that a bursty whist ler mode emission propagates toward the Earth near the resonance cone. Upwa rd propagating auroral kilometric radiation in the R-X mode represents anot her example demonstrating the potential of such analysis for future applica tions.