“…The basic method of computing this chart has been described (6). For the lobe plota, the chart-plotting program has been made a subroutine, called RHACHT, such that any maximum range ar-d height can be specified.…”
“…The basic method of computing this chart has been described (6). For the lobe plota, the chart-plotting program has been made a subroutine, called RHACHT, such that any maximum range ar-d height can be specified.…”
“…(This definition is actually for Ft but applies to Fr as well through the principle of reciprocity.) Symbolically, (42) where R, (, and o are the range, azimuth, and elevation coordinates of the point in space. Thus F has the dimensions of a voltage ratio, and so in the range equation where power ratios (such as Gt and Gr) occur to the first power, the pattern-propagation factors occur as Ft 2 and F,2.…”
Section: Pattern-propagation Factormentioning
confidence: 99%
“…If absorption is ignored and the target is in the antenna pattern maximum, the direct-path-wave field strength Ed can be used for E 0 in Eq. (42). If the target is not in the pattern maximum, this field strength must be multiplied by the antenna pattern factor f(o), which describes the antenna vertical-plane The three following classes of reflection-interference problems require successively more elaborate procedures for their solution:…”
Section: Pattern-propagation Factormentioning
confidence: 99%
“…Unfortunately, this model does not result in simple formulas for the range-height-angle relationship; a numerical integration is required to trace a ray path (41,42). However, machine-computed results can be used to plot a range-height-angle chart for this model, on which the raypath lines are straight; this result is accomplished by suitably distorting the contours of constant height (42).…”
Section: Refraction and Coverage Diagramsmentioning
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