Radar system with specialized weighting
AssigneeRaytheon Company
InventorsWilliam W. Shrader, Ronald B. Campbell, Jr.
Life of this patent
Estimating the term…
Abstract
A radar system including an azimuthally scanned radar wherein the radar receives echo signals during each of a succession of azimuthally scanned directions of the radar receiving beam. Sequences of samples of data of received echo signals are stored with sets of samples relating to a common range being utilized for developing weighting factors for weighting received echo signals as a function of range. Thereby, dynamic fluctuations in signals strength because of clutter are reduced.
Claims12
A system for processing signals comprising:
- means for sampling signals at each interval of a first series of predetermined intervals of time to provide a first series of samples;
- means for activating said sampling means to sample signals during a second and a subsequent series of predetermined intervals of time to provide a second and a subsequent series of samples, thereby generating a first set of samples consisting of the first sample in said first, in said second and in said subsequent series, and further generating a second and a subsequent set of samples consisting respectively of the second and a subsequent sample in said first, in said second and in said subsequent sample series;
- means for selecting a specific magnitude of sample of said first, of said second and of said subsequent sets of samples to provide selected samples;
- and
- means coupled to said selecting means for weighting a first sample, a second sample and a subsequent sample of a series of samples of said sampling means respectively by weighting factors corresponding to said selected samples.
In a radar system providing a succession of range sweeps wherein a sequence of echo signals is produced during each of said range sweeps, a system for processing said echo signals comprising:
- means for sampling signals at predetermined intervals of each of said sequences of echo signals to provide a plurality of series of samples with individual ones of said series corresponding to individual ones of said echo signal sequences;
- selecting means responsive to sets of said samples wherein the first set of said sets consists of the first sample in each of said series, the second set of said sets consists of the second sample in each of said series, and subsequent sets consist respectively of subsequent samples in each of said series, said selecting means selecting a magnitude of sample in each of said sets;
- and
- means coupled to said selecting means and responsive to selections of said selecting means for weighting successive samples in one of said series of samples of said sampling means by weighting factors corresponding to respective ones of said selections.
A signal processor responsive to a succession of series of samples comprising:
- means for storing said succession of series of samples, said storing means providing sets of said samples wherein a first set consists of the first sample in each of said series, a second set consists of the second sample in each of said series, and subsequent sets consist respectively of subsequent samples in each of said series;
- means responsive to the samples in respective ones of said sets for generating signals representing respectively the relative magnitudes of the samples in each of said sets;
- and
- means responsive to said signal for weighting respective ones of the samples in one of said series by weighting factors designated by respective ones of said signals.
Dependencies are inferred from the claim text.