Abstract:Based on self-recovery demand for UUV at the end of missions or when energy is insufficient, this paper deeply studies underwater acoustic location and telemetry and remote control guidance technology on mid-long range, completes underwater acoustic location and telemetry and remote control guidance system scheme design, and focus on the modulation methods of under- water acoustic location and telemetry and remote control, such as MFSK, OFDM, spread spectrum, etc. Through analysis and com- parison, this paper designs an orthogonal hybrid spread spectrum modulation method, and uses coherent 2-D search technology to improve the Doppler compensation capability of spread spectrum technology. The static and dynamic ship experiments are carried out on lake, and the results of experiments data show that the system can effectively guide the recovery operation of UUV, the accuracy of underwater acoustic horizontal location is better than 0. 5%, and the bit error rate of underwater acoustic location and telemetry and remote control system is 10-3 magnitude.
