Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Iff or sif
Patent
1983-06-27
1987-02-10
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
Iff or sif
342 40, G01S 1375
Patent
active
046426388
ABSTRACT:
An improved bracket decoder apparatus including an enhanced bracket decoder ortion and a regenerative bracket decoder portion operates to generate enhanced bracket decode signals and regenerative bracket decode signals. The foregoing combination of decoder portions will allow digital display systems which use IFF information to detect all targets that are replying regardless of the IFF train spacing, even overlapping replies. The enhanced bracket decoder portion of the apparatus can be operated alone to detect all reply conditions except the one of overlapping replies. The apparatus is configured to provide presently used signals also, i.e., the bracket decode, the degarbled bracket decode, and the range and code information for each video reply.
REFERENCES:
patent: 3667054 (1972-05-01), Nelson
patent: 3732563 (1973-05-01), Nelson
patent: 3940764 (1976-02-01), Beeswing
patent: 4003050 (1977-01-01), Miller
patent: 4008471 (1977-02-01), Hall et al.
patent: 4314247 (1982-02-01), Elberink et al.
patent: 4486752 (1984-12-01), Chihak
Sotomayor John B.
The United States of America as represented by the Secretary of
Tubbesing T. H.
Walden Kenneth E.
Wynn John G.
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