30 December 1981 Instrumentation For Millimeter Wave Turbulence Measurements
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Abstract
Increasing emphasis is being placed on the study of the effects of atmospheric turbulence on the propagation of millimeter and submillimeter waves because of the potential usefulness of these frequency bands in both military and civilian applications. The characterization of millimeter wave turbulence effects is more complicated than that of the optical propagation case because of a strong dependence on the humidity structure parameter q22 as well as on the temperature structure parameter OT2. In addition, there is a dependence on the cross-correlation of these two parameters, denoted by G. Potential problems caused by turbulence include fluctuations of both intensity and angle-of-arrival, but the latter problem is of special interest because it leads to aimpoint wander in military fire control systems. This paper discusses methods of measuring both intensity and anglevf-arrival fluctuations at millimeter wavelengths as well as the measurement of CT 2' CQ2 , CTQ, and other pertinent atmospheric parameters.
© (1981) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. W. McMillan, R. W. McMillan, R. A. Bohlander, R. A. Bohlander, G. R. Ochs, G. R. Ochs, } "Instrumentation For Millimeter Wave Turbulence Measurements", Proc. SPIE 0305, Atmospheric Effects on Electro-Optical, Infrared, and Millimeter Wave Systems Performance, (30 December 1981); doi: 10.1117/12.932734; https://doi.org/10.1117/12.932734
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