An oscillating spray device comprising an oscillation chamber. The method includes imposing a phase delay on a first polarization of a received optical signal with respect to a second polarization of the optical signal to produce an intermediate optical signal having a time varying polarization. The adaptive filter continues normal adaptation during the apparent double-talk state when echo path change is also detected. Assignments are generated that assign each of the actions to a corresponding stage of the pipeline. The computing device also includes a reference decoder configured to effect conversion of the reference encoded source data into source data. The microwave signal reflected by the object is then obtained from the three-dimensional measurement result in a lateral, two-dimensional pattern, a highest signal amplitude and a second-highest signal amplitude within a particular time period before or after the received microwave signal is identified in a plurality of pattern points of the pattern.