Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1982-02-02
1985-06-18
Tubbesing, T. H.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343 5DP, 343 5FT, G01S 1320, G01S 728
Patent
active
045243603
ABSTRACT:
In a pulse radar apparatus target returns are detected, sampled, digitized per range quant and frequency analyzed. The apparatus includes a cell classification unit (5) for deriving from the spectrum range of the target returns a cell classification signal, whose logical values indicate that the target returns within a radar cell are classified, in the first instance, as first trip and multiple trip signals. In a microprocessor (12) the cells, which collectively cover one single target, are combined to form a cluster, while a signal representative of the target covered by the cluster is determined. Furthermore in the microprocessor (12) a cluster classification signal is derived, whose logical values indicate that the target returns within the cluster are classified as first trip and multiple trip signals. The signal representative of the target covered by the cluster is read out if it is derived from target returns classified as first trip echoes.
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J. D. Grimm et al., "Radar Signal Processing Techniques" May '78, pp. 1-11, IEEE Electro/78 Conf. Record, 28/2, presented at Electro/78, Boston (U.S.A.).
Bergman Jan
Hol Willem A.
Van Genderen Pieter
Barron Jr. Gilberto
Hollandse Signaalapparaten B.V.
Kraus Robert J.
Tubbesing T. H.
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