| 摘要 |
This method for estimating at most two mixed signals from separate sources, of which the time-frequency representation shows an unknown non-zero proportion of zero components, by means of an array consisting of P>2 antennas, when the directional vectors U and V of the sources emitting said signals are additionally known or estimated, comprises the following steps: a) calculating the successive discrete Fourier transforms of the signal received by the antennas and sampled to obtain a time-frequency P-vector grid of the signal; each element of the grid being referred to as a box and containing a complex vector X forming a measurement; b) for each box, calculating the conditional expectation estimator of the signal, or of the signals, from the measurement X and an a priori probability density for the signals that is a Gaussian mixture. |
