Scan pattern estimator for an electromagnetic sensor

Details Scan pattern estimator for an electromagnetic sensor Scan pattern estimator for an electromagnetic sensor

1978-12-27

1981-06-30

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343 171R, 343100LE, G01S 102

Patent

active

042765501

ABSTRACT:
A scan pattern estimator is used in a scanning electromagnetic sensor system in which electromagnetic radiation is repetitively scanned and sensed for a plurality of scan cycles. The first incoming scan pattern is transmitted to a summer (42) that produces an output scan pattern in response thereto. A delay unit (46) receives and delays the output scan patterns for a period of one scan cycle. The output of the delay unit (46) is multiplied with incoming scan patterns in a multiplier (38). The output of the multiplier (38) is applied to the summer (42). The output of the delay (46) is also applied to the summer (42). Thus, the output of the summer (42) represents a scan pattern estimate of incoming scan patterns with reduced pertubations and interference relative to the incoming scan pattern.

REFERENCES:
patent: 2487995 (1949-11-01), Tucker
patent: 3422435 (1969-01-01), Cragon et al.
patent: 3531802 (1970-09-01), Brown et al.

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