Controlled by a switch, or the radar can be fixed to transmit in single-polarization. If
a switch is used, it can be a simple, slow waveguide switch rather than a fast switch
(pulse-to-pulse).
Alternating (horizontal and vertical)
Radar alternates pulse-to-pulse between horizontal and vertical. A high-power fast
switch is used to switch the polarization between the 2 channels.
Simultaneous (horizontal and vertical)
Horizontal and vertical are transmitted simultaneously.
