A first radar transmission section and second radar transmission section transmit a first modulated signal and second modulated signal wherein a code sequence of prescribed code length is repeated a prescribed number of times, using respectively a first code width and second code width. An A/D conversion section effects conversion to a discrete signal with a sampling frequency that is smaller than the value of the difference of the first code width and second code width. A positioning section separates a plurality of received signals using a first correlation value based on the outputs of the A/D conversion section and a first delay section depending on the first code width and using a second correlation value based on the outputs of the A/D conversion section and a second delay section depending on the second code width.
