Communications: directive radio wave systems and devices (e.g. – Radar ew – Eccm
Patent
1983-01-05
1990-01-02
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
Radar ew
Eccm
342 17, 342 19, 342379, H04K 300, G01S 736
Patent
active
048916471
ABSTRACT:
A method and a device for reducing the power of jamming signals received by the secondary lobes of the main antenna AP of a radar transmitting at a random frequency f.sub.E (n), with which is associated a number of secondary antennas ASl, . . . ASN. The signals used for the calculation in circuit (10) of the weighting coefficients (Wl to WN) to be applied to obtain a signal resulting from the weighted linear combination of the secondary signals Dl, . . . DN to be subtracted from the signal Do in the main channel (VPD) relative to the transmission frequency f.sub.E (N+1) are those (V.sub.0, V.sub.1, . . . V.sub.N) processed in the main and secondary auxiliary channels (VPA, AsAl, . . . ASAN) relative to the transmission frequency f.sub.E (n+1) of the next recurrence train during the period of radar reception of the recurrence train corresponding to the transmission frequency f.sub.E (n) for the jammed range slots selected by circuit (15).
REFERENCES:
patent: 4044359 (1977-08-01), Applebaum et al.
patent: 4358766 (1982-11-01), Mehron
"Thomson-CSF"
Sotomayor John B.
Tubbesing T. H.
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