Patent
Bearing measurement device for a portable attack warning radar
TLDR
In this paper, an attack warning system for alerting ground troops or ships to the possiity of attack by enemy aircraft is presented, which consists of a detection shell at a range of 3 miles covering 360° in azimuth and 60° in elevation.Abstract:
An attack warning system for alerting ground troops or ships to the possiity of attack by enemy aircraft. The system establishes a detection shell at a range of 3 miles covering 360° in azimuth and 60° in elevation. The bearing measurement is obtained by a combination of antenna pattern shape and P-N Code modulation. A pair of oppositely facing receiving antennas and a pair of oppositely facing transmitting antennas located orthogonally with respect to the receiving antennas provide the 360° coverage. The azimuth pattern of each antenna covers 180°. The system provides target bearing information by applying different codes to each of the two opposed transmit antennas and multiply decoding the received signals.read more
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System for identifying distance and range between a radar source and a vehicle
Thomas M. Ryan,Karen Ryan +1 more
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References
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Patent
Phase-independent digital correlator for use in radar systems
TL;DR: A phase independent digital correlator for use in radar systems comprising a signal input circuit, a multiplying stage, a plurality of combination devices, an integrating circuit, an array of threshold devices and a signal output circuit is described in this article.