A radio receiving apparatus according to the present invention includes an array
antenna having a plurality of antennas and an array receiving unit, and obtains
a correction amount by using a known calibration signal. The radio receiving apparatus
further includes a diversity receiving unit that receives the reception outputs
of the plurality of antennas as inputs, carries out diversity processing, and outputs
the results, a diversity reception quality monitoring unit for monitoring the reception
quality of diversity reception, and an array reception quality monitoring unit
for monitoring the reception quality of array antenna reception. If the reception
quality of the diversity reception is equivalent to the reception quality of the
array antenna reception, then the calibration of the array receiving unit is carried
out while implementing the diversity reception so as to obtain the correction amounts
of the amplitude fluctuation and the phase shift of the array receiving unit.
