Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1985-02-26
1987-07-28
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
343719, 342 59, H01Q 322, H01Q 104
Patent
active
046834745
ABSTRACT:
The survivable ground base sensor is the basic element of a land-based distributed radar that consists of 60 or more individual subarrays, which are located in either a straight line or on the perimeter of a 200 nmi diameter circle in the north central U.S. At least 10 nmi separation is provided between individual subarrays. Each subarray is self-contained with emergency power and is operated unattended. There is no need for any interconnection between subarrays so that the survivability is improved, and there is no limit to the number of subarrays used except that imposed by cost and the desire for greater survivability. Since the spacing between subarrays is 10 nmi, a direct hit on one subarray will not damage an adjacent one so that a separate re-entry vehicles must be targeted to each subarray.
REFERENCES:
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patent: 3594798 (1971-07-01), Leydorf
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patent: 3790949 (1974-02-01), McGraw
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patent: 3877033 (1975-04-01), Unz
patent: 4278978 (1981-07-01), Easterling et al.
Cantrell and Grindlay, "Multiple Site Radar Tracking System", IEEE Intl. Radar Conference, Apr. 1980, pp. 348-354.
Skonik, Intro. to Radar Systems, 2nd Ed. 1980, pp. 29-30.
Blum Theodore M.
Issing Gregory C.
Singer Donald J.
Stepanishen William
The United States of America as represented by the Secretary of
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