References in periodicals archive ?
The STFD matrix and the source TFDs matrix in (6) are similar to the spatial covariance matrix and the source covariance matrix.
As it can be seen from (6), the construction of the STFD matrix from the t-f points of highly localized signal energy allows the enhancement of the signal-to-noise ratio (SNR), which is of great significance to the performance improvement of DOA estimation [10].
DOA Estimation Based on STFD. The STFD matrix [D.sub.xx](t, [f.sub.p](t)) based on one t-f point can be obtained from a component of chirp signals.