principal plane


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principal plane

A vertical plane which contains the principal point of an oblique photograph, the perspective center of the lens, and the ground nadir.
References in periodicals archive ?
For each surface, the principal plane of symmetry is identified as the symmetry plane that aligns with, or runs parallel to, the G-or H-axis respectively; see Figures 3(d) and 4(d).
In either principal plane, the co-polarized patterns with and without DGS are found to be almost identical over [+ or -] 100[degrees].
Total visual arc, the angle of the principal plane and the visual angle were used to plot fields of view for B.
Although both A and B are now rotated relative to the GH axes, the orientation of the principal plane [X.
In contrast, the peak radiation still occurs in the two principal plane of [phi] = 0[degrees] and [phi] = 90[degrees] in n = +2 mode.
For CP antennas, the term principal plane can be defined simply as any slice or cut of the radiation pattern that passes through the peak of the main beam.
theta]) was rotated from -180[degrees] to 180[degrees] with an increment of 5[degrees] for principal plane measurements.
The radiation patterns of the optimized patch antenna in two principal planes in broadside is shown in figure 7.
Coverage encompasses simple stresses and strains, shear force and bending, bending stresses in beams, shear stresses in beams, torsion, close coiled helical springs, columns and struts, deflection, principal planes and stresses, and thin and thick cylinders, among other topics.
The patterns of the principal planes can be deduced from two small Ns-element (Ns is odd and less than [N.
Table 2 shows the edge power level of the principal planes at [theta] = 53[degrees].
Low back radiation and low cross-polarization are also obtained at the two principal planes.