In order to reduce size and power consumption of torpedo acoustic homing system, homing system miniaturization was tried. With the development of hardware and software technology, as well as the resources increasing on the chip, the implementation of complexity system on a single chip became possible. A NoC based multiprocessor system on an FPGA platform was built to realize the torpedo homing signal processing tasks. After the reasonable partition of the homing tasks, the tasks were mapped onto the multiprocessor system, and the single chip homing system was achieved. The feasibility of the acoustic homing system was verified by running test.