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Atmospheric Propagation Studies At Near-Millimeter Wavelengths

An experiment to study the effect of a meterologically well-characterized atmosphere on near-millimeter wave propagation has been designed and is being implemented. The primary emphasis of this experiment is on measurement of atmospheric mutual coherence function (MCF) simultaneously with measurement of temperature/humidity structure parameters C2T C2Q, and CTQ. Quasi-optical techniques, which make use of the Fourier transforming properties of focussing reflective optics, will be applied to measure real and imaginary parts of the MCF, while fast temperature and humidity sensors will provide derived structure parameters. This paper will discuss experimental concepts and range instrumentation.