Citation
Abstract
It is shown that the horizon rms deviation of the antenna from the best-fitting paraboloid is a representative measure of the cosine-weighted average rms for the complete elevation attitude range. Therefore, the horizon rms can be used as a substitute merit function in a structural redesign program that generates improved member size distributions to reduce the weighted-average rms. Validity of the substitution follows because: (1) the optimal rigging angle is a slowly changing function of changes in member size distributions; (2) the weighted average rms is not sensitive to small rigging angle changes; (3) at rigging angles near the optimal, ranking according to the minimum horizon rms is equivalent to ranking according to the minimum cosine-weighted average for alternative designs with different member size distributions.
Details
- Volume
- I
- Published
- February 15, 1971
- Pages
- 81–87
- File Size
- 549.9 KB