Angle/vector processed, phase-accumulated single vector rotation

Details Angle/vector processed, phase-accumulated single vector rotation Angle/vector processed, phase-accumulated single vector rotation

1977-10-12

1979-01-30

Tubbesing, T.H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 942

Patent

active

041375335

ABSTRACT:
In-phase (I) and quadrature (Q) radar return signals are converted to phase to provide phase difference between like range bins of successive pulse repetition intervals (PRI's), the phase differences being reconverted to I and Q format for accumulation across multi-range-bin windows surrounding each range bin to be processed, the normalized range bin accumulations being continuously accumulated in the angle domain, in successive PRI's, to provide clutter phase angle estimates used to rotate incoming target video vectors, a single time, back to the estimated zero-doppler phase of the first PRI of a multi-PRI batch for clutter-elimination filtering. Third-order and fourth-order filtering (utilizing four-PRI and five-PRI batches, respectively), is achieved on a constant one-out-of-four PRI output basis by utilizing the same weighted data for the highest PRI of one fourth-order batch and the lowest PRI of the next higher fourth-order batch, which is rendered possible by the continuous accumulation of estimated phases, over successive PRI's.

REFERENCES:
patent: 3877011 (1975-04-01), Holberg et al.
patent: 3882498 (1975-05-01), McGuffin
patent: 3962704 (1976-06-01), Evans
patent: 3972041 (1976-07-01), Howard
patent: 3987442 (1976-10-01), McLeod, Jr.
patent: 4058809 (1977-11-01), Chudleigh, Jr.
patent: 4062011 (1977-12-01), Preston et al.

Affiliated with

Also associated with

Rating

Angle/vector processed, phase-accumulated single vector rotation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Angle/vector processed, phase-accumulated single vector rotation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Angle/vector processed, phase-accumulated single vector rotation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1153055