FIG. 1. Depiction of sampling/oversampling in range and processing of the signals. (a) Samples in range with spacing equal to the pulse length t; standard processing to obtain correlation estimates is indicated; (b) oversampling in range; (c) zoomed presentation of oversampled range locations where range samples to be whitened with matrix W are indicated; (d) processing of whitened samples to obtain estimates of correlations in range and average of these estimates in range to reduce the statistical errors.
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