A DSP Implementation Method of Multi-point Real-Time Receiving and Transmitting Scale Target Simulator

In underwater acoustic countermeasure there is a big difference between the single-receiving multi-transmitting scale target simulator and the real submarine echo. In this paper, an implementation method of multi-point real-time receiving/transmitting scale target simulator based on advanced digital signal processor(ADSP) is presented. This method adopts the multi-point receive-transmit mode and the multi-channel signal parallel real-time detection and processing to improve the target simulator's simulation fidelity of underwater target in terms of the space echo characteristics and the time/frequency domain characteristics. Test results show that the minimal time delay of the system can be controlled less than 10 ms, and the difference between time delay simulation and target strength simulation is reduced, thus the echo frequency of each highlight is more close to the real submarine echo frequency. This study may provide reference for further optimization of the scale target simulation technology.