[Retracted] Polarization Characteristics of Electromagnetic Wave Sensing in Confined Space Based on Hybrid Algorithm

Table 3

Axial ratios of peak electron densities when the electromagnetic frequency is less than the collision frequency and the incident angle is 60°.

Peak electron density (/m^3)	Axial ratio (dB)
10^17	-1.1
10^18	-6.2
10^19	-10.1