A while reducing overall system cost and provides an object detection system capable of suppressing interference.
Sending the search wave from A transceiver unit 14,14a, plural object detecting device 10,10a for detecting the object by obtaining the received wave including reflected waves from surrounding objects at the reception portion 14,14a a object detection system comprising a plurality of said object detecting device 10,10a are each, transceiver 14,14a have a common range of the frequency of transmission can exploration wave exploration frequency within common range based on the wave transmission characteristics of the different exploration wave, a transmission control unit 12,12a to send one of exploration wave from the transceiver 14, 14a, characteristic acquisition unit 18 acquires the reception characteristics of the reception wave includes a 20, based on the acquired reception characteristics, the determination unit 103 whether the received wave is a reflected wave exploration waves in either the transmit characteristics, a.
.FIELD 1