Tracking Mode Operation of a CDAA RDF System.

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Abstract:

The large aperture CDAA RDF system can be operated in several ways. One of them is in the tracking mode which uses information derived from the received output to align the beam of the array in the direction from which the signal arrives. The difference in phase between the two halves of the array is the signal characteristic used to rotate the array to the desired azimuth. The difference between the azimuth to which the array is aligned and the signal azimuth is indicated by the phase difference. Thus, a good approximation to the signal may be determined even for those signals for which the azimuthal angle of arrival changes rapidly. Author

Author(s):
Ernst, Edward W.
Author Organization(s):
ILLINOIS UNIV AT URBANA RADIO RESEARCH LAB
Descriptive Note:
Technical rept. no. 2,
Pagination:
0029

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
RRL-Pub-329, UILU-ENG-71-2554
Contract/Grant Number(s):
N00014-67-A-0305-0002
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*DIRECTION FINDING, ANTENNA ARRAYS), (*RADIO SIGNALS, DIRECTION FINDING), RADIO EQUIPMENT, TRACKING, ANGLE OF ARRIVAL, SCANNING, PHASE SHIFT CIRCUITS, ALIGNMENT
Field(s)/Group(s):
Direction Finding, Radio Communications
Keyword(s):
CDAA(CIRCULAR DISPOSED ANTENNA ARRAYS), *CIRCULAR DISPOSED ANTENNA ARRAYS
Report Date:
1971 Sep 01