. Airborne Man-Made Radio Noise Assessment. Radio noise; Meteor burst communications. Figure 5. Coordinate system for an airborne antenna, 0. located at an altitude, h, above a surface distribution of roan-made radio noise sources. Substitution of the dipole antenna power pattern into the integral representa- tion of the airborne man-made noise power equation and further derivation for offset, business locations performed in reference 2 yield the following param- etric equations. For airborne man-made radio noise directly over a business area when the ratio of altitude, h, to distance, d, is s
. Airborne Man-Made Radio Noise Assessment. Radio noise; Meteor burst communications. Figure 5. Coordinate system for an airborne antenna, 0. located at an altitude, h, above a surface distribution of roan-made radio noise sources. Substitution of the dipole antenna power pattern into the integral representa- tion of the airborne man-made noise power equation and further derivation for offset, business locations performed in reference 2 yield the following param- etric equations. For airborne man-made radio noise directly over a business area when the ratio of altitude, h, to distance, d, is small the limit of the integral is Pj, = Pg - A In (h/hQ) • (10) In the limit of large h/d the integral approaches Ph kh-2. (11) As h approaches infinity p reaches galactic noise as a limit. For airborne man-made radio noise offset from a business area in the altitude range of 0 < h < miles, a second-order approximation of the inte- gral is Ph - Pa + Bh - CH3 (12) .,. <~ .?.•»,--. 1Mb ..t__-&<3k£i «£&&&Mfc£&iJ&&&&£«wi. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Roy, T. N; Naval Ocean Systems Center (U. S. ). Ft. Belvoir Defense Technical Information Center
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