Communications: directive radio wave systems and devices (e.g. – Clutter elimination – Mti
Patent
1984-12-31
1996-04-23
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Clutter elimination
Mti
342 26, 342159, 342383, 342384, G01S 13534
Patent
active
055107966
ABSTRACT:
The invention relates to apparatus for reducing the masking effect in the doppler frequency domain of wind sheared clutter upon the radar returns of moving targets. The invention consists in forming two beams from the elements of a radar antenna array by means of adjustable complex weights which are then summed. One of the two beams is then delayed by a predetermined amount and added algebraically to the other beam to form a composite beam containing a narrow trough-like depression in beam angle/doppler frequency space. Means are then provided for adjusting the weights to bring coincidence between the depression and the clutter to cause attenuation of the clutter with a minimum reduction in the usable doppler frequency domain.
REFERENCES:
patent: 3720941 (1973-03-01), Ares
patent: 3806924 (1974-04-01), Applebaum
patent: 4121209 (1978-10-01), ap Rhys
Barron Jr. Gilberto
Checkovich Paul
Martin Marietta Corporation
Young Stephen A.
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