MIT

Each $f(t,\vec{p_{n}})$ is processed using a LTI filter with impulse response $h_n(\tau)$ and sum over all filter outputs to obtain the total array output $y(t)$. This procedure is shown in the figure below... Consider again figure 2.10 above. The plane wave is propagating in the direction $\vec{a}$ with radian frequency $\omega$... Conventional delay-and-sum beamforming is conceptually very simple. Given some sensor array with arbitrary geometry and a plane wave signal incident onto this array from some azimuth and inclination, a geometric relationship exists that maps these angles to the time at which the signal reaches each sensor.

Primary location: Woods Hole United States