On nonlinear effects of envelope detection in beamforming systems
Andrea Trucco, Vittorio Murino · IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control · 1997
The evaluation of the effects that are due to the square envelope detection performed in an acoustic imaging system is addressed. Envelope detection destroys phase information, producing a nonlinear contribution. The importance of the nonlinear contribution is evaluated by a beam-pattern-like formulation and by several simulations. Generally, a considerable incidence of such nonlinearities has been pointed out.