Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1977-05-16
1978-06-06
Hubler, Malcolm F.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
G01S 942
Patent
active
040939510
ABSTRACT:
The effects of simultaneous platform motion and antenna scanning are compated for in radar systems of the moving-target-indicator type. Signals from auxiliary sub-arrays of the antenna compensate signals from main sub-arrays of the antenna for the effects of antenna scanning. Delayed, scanning-compensated signals from the main sub-arrays are then combined with undelayed, uncompensated signals from the main sub-arrays to provide signals that are compensated for the effects of scanning motion and platform motion. A first embodiment provides a clutter canceller having motion compensation at each stage of cancellation. A second embodiment provides a large number (N) of motion-compensated signals which are synchronized in time and phase for further MTI processing.
REFERENCES:
patent: 3735399 (1973-05-01), Sletten et al.
patent: 3735400 (1973-05-01), Sletten et al.
patent: 3786509 (1974-01-01), Applebaum et al.
patent: 3806924 (1974-04-01), Applebaum
patent: 3877011 (1975-04-01), Holberg et al.
patent: 3879729 (1975-04-01), Nevin
patent: 3882498 (1975-05-01), McGuffin
patent: 3968490 (1976-07-01), Gostin
Daubenspeck William C.
Hubler Malcolm F.
Schneider Philip
Sciascia R. S.
The United States of America as represented by the Secretary of
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