Probability of sideband generation at low latitudes

Abstract

Possibility of sideband generation at low, middle and high latitudes is studied considering non-linear interaction between resonant electrons and very low frequency signals transmitted into the magnetosphere. It is shown that as <i style="">L</i> value increases, sideband spacing decreases and, at low <i style="">L</i> shells, frequency difference of 1500 Hz in interacting signals (i.e. from 2500 to 4000 Hz or from 4000 to 5500 Hz) produces insignificant spacing values. It is also shown that mean fractional spacing at low latitudes is more than maximum(observed) fractional spacing at <i style="">L </i>= 4, indicating that sideband generation at low latitudes has a remote possibility.