Calculation of some Ionospheric Parameters in Passive Defense

Investigation of ionospheric layer and prediction of its behavior (against external factors) can be an important step in the reduction of environmental, properties and human damages due to intentional variation in this region. For better understading of this layer and controlling the situation before critical condition, many experimental and theoretical investigations are required. One way of understanding ionospheric parameters is variation of collision frequency of electrons with neutral particles. In this paper two types of collision frequencies are calculated for electrons colliding with N2, H2, O2, CO2 and CO gases as functions of temperature. Also electron mobility is computed for these gases and the results are compared with those of experimental and theoretical works.