Signal processing device and signal processing method

A signal processing method for combining a plurality of received signals to be input comprising:

• selecting a signal serving as a phase reference from the plurality of received signals, based on the qualities of the plurality of received signals;
• obtaining relative phase information between the plurality of received signals before combining;
• and calculating a phase correction amount based on the relative phase information and performing phase correction on the received signals, wherein
• when switching occurs in the selected phase reference signal, the phase correction amount is changed by as much as a relative phase difference between phase reference signals before and after the switching.

A non-transitory commuter readable recording medium for storing a signal processing program for combining a plurality of received signals to be input, the program causing a computer to serve as:

• a phase reference signal selection unit that selects a phase reference signal serving as a phase reference from the plurality of received signals, based on the qualities of the plurality of received signals;
• a relative phase calculation unit that obtains relative phase information between the plurality of received signals before combining;
• and a phase compensation unit that calculates a phase correction amount based on the relative phase information and performs phase correction on the received signals, wherein
• when switching occurs in the selected phase reference signal, the phase correction amount is changed by as much as a relative phase difference between phase reference signals before and after the switching.