Still one possibility to determine the wave vector onboard one spacecraft

The determination of dispersion relations k = k (ω) for the wave, propagating in space plasmas is an important task of electromagnetic measurements onboard satellites. By this the major problem is to separate the spatial and temporal variations of electromagnetic fields. The wave vector calculation in general case requires measurement of three components of magnetic field B vector and three components of electric field E vector. The measurement of the electric field E with enough good precision requires long booms what is a great problem to realize, especially onboard of microsatellites. We study the possibility to avoid E measurements without of loss of wave vector k calculations generality and precision. Basing on Maxwell’s equation