Abstract: A passive instantaneous microwave signal frequency identifying and angle of arrival identifying system employing a beam steering multiple element antenna coupled through a Butler matrix to a plurality of simplified Fourier transformation radio receivers wherein unit value or near unit value magnitudes of the Kernel function
ⅇ
-
j2
⁢
⁢
π
⁢
⁢
kn
N
in the receivers' Fourier transformations are used to elude transformation computation complexity and resulting radio receiver size and cost penalties. Limiting amplifiers, a video signal path and direction finding encoding logic are also employed. Airborne military application of the system in electronic warfare direction finding, radar frequency determination and other activities is included.
Type:
Grant
Filed:
April 3, 2002
Date of Patent:
September 7, 2004
Assignee:
The United States of America as represented by the Secretary
of the Air Force
Abstract: A new variety of Chrysanthemum plant named ‘Safari Time Golden,’ having golden yellow quill single flowers with spoon tips. The variety has a medium tall vigor with a free branching habit and good foliage presentation.
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