A quasi-optical millimeter wave transmitter and receiver array for measurements of angular scintillation

This system, used to measure the effects of atmospheric turbulence at frequencies between 116 and 173 GHz, comprises a front-fed, off-axis parabola transmitting antenna located 1.4 km from a receiver array. The five antennas in the latter receive local oscillator power from a phase-locked klystron source via a low-loss lens beam waveguide distribution system.