The invention relates to a method for the recording and processing of the amplitude
and phase of signal waves, whereby a signal source generates a modulated signal
wave, which is altered on the way thereof through a transmission medium or through
an object as a result of reflection and/or dispersion, received by a receiving
device and directly demodulated therein, using a modulation signal which has a
well-defined relationship to the modulation of the signal waves, by means of a
modulation device without the signal wave carrier and recorded and analysed in
relation to the amplitude of the modulated signal wave and phase relationship of
the modulation pahse of the signal wave and of the modulation signal. In a sensor,
sensitive to the signal waves, in a receiver device, wave energy particles, directly
or indirectly generated by means of the signal wave energy in a wagging process,
with a wave energy wag matching the modulation signal, are fed to at least two
distinguishable groups of receiving elements on the sensor, recorded, optionally
amplified and transmitted by at least one read-out output of an output unit, corresponding
to at least one of the group of distinguishable receiving elements, in the form
of a sum and/or correlation signal.
