A bistatic underwater detection system based on MEMS vector hydrophones and micro-explosive sound sources is proposed.Different from traditional bistatic configuration system

this system consists of receiving buoys and sound source buoys.It adopts a separate placement method for transmitter and receiver

and replaces the traditional sonar with micro-explosive sound source to solve the issues of low sound source level and limited detection range of traditional sonars.The sound source buoy remotely detonates the explosion sound source via wireless communication.The receiving buoy collects and stores the explosion sound signals

and then transmits the collected data in real time to the upper computer through the wireless module.In addition

to facilitate long-term storage and retrieval of data

the sound source buoy and the receiving buoy respectively store the collected data information and buoy attitude information on the SD card.The indoor and outdoor tests show that the bistatic underwater detection system has complete overall functions.The average sound source level of the micro-explosion sound source can reach 220 dB

and the directional error of the system towards the target is within 3°.This design provides a new technical means for the existing equipment system to achieve medium and long-range detection.