A reception
system for frequency-modulated, i.e. phase-modulated high-frequency signals, for motor vehicles, having a multi-antenna
system having at least two antennas, an individually adjustable
phase rotation element, situated in the reception path of the corresponding antenna, in each instance, and a subsequent
receiver circuit. There is an individually adjustable switching element for switching through or interrupting the
signal flow, respectively, is present in the reception path of every antenna. The reception signals are guided by way of
phase rotation elements and the adjustable switching elements which are passed to a linear combination circuit, and wherein the combined
signal is passed to the
receiver circuit. Furthermore, there can be a level indicator for indicating the level of the combined
signal in the form of a level signal and a
computer device to which this level signal is passed. An the
computer device can include an
algorithm for determining the phase differences of the reception signals that are present at the input of the combination circuit at a given setting of the
phase rotation elements from their level conditions, by means of calculations. This calculation can occur using
level measurement samples of the level signal that are performed one after the other, in terms of time, obtained by way of switch setting signals and phase setting signals brought about by the
computer device wherein there are differently defined settings of the switching elements or of the phase rotation elements, respectively. Phase setting signals are generated on the basis of the phase differences determined by calculations, for the subsequent setting of the phase rotation elements for
phase alignment of the reception signals that are present at the input of the combination circuit when the adjustable switching elements are switched through.