Abstract
Visible light and FLIR imaging systems provide detailed imagery suitable for acquisition and recognition of tactical targets at ranges up to several kilometers, as long as suitable propagation conditions exist. However, when visibility is limited by fogs or battlefield smokes, such systems are blinded and other means must be provided. A Near Millimeter Wave (NMMW) quasi-imaging system shows promise in satisfying this critical requirement [1, 2]. Propagation of near millimeter waves through the clear air (where water vapor is the principal cause of attenuation), and through fogs and smokes, improves with increasing wavelength [3]. But resolution, and therefore imaging performance, improves with decreasing wavelength. The tradeoff between propagation and resolution dominates other system design characteristics.
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