An integrated method for underwater communication and detection

Abstract

The present invention provides an integrated method for underwater communication detection. Based on the Differential Pattern Time Delay Difference Code (DPDS) system, a signal that meets the requirements is selected as the Pattern code of the DPDS system, and the communication information is modulated between adjacent Pattern codes. In the delay difference, each Pattern code is used as an active sonar detection waveform. Determining the decoding process of the integrated communication detection signal at the communication receiving end and the processing flow of receiving the target echo at the echo signal receiving end. The communication receiver uses a copy correlator to obtain the delay difference of each symbol to complete the decoding; the integrated signal transmitter uses a multi-channel matched filter to measure the parameter changes of the echo signal and determine the distance and speed of the target. In order to complete the active sonar target detection. The present invention has the advantages of (1) simultaneous underwater acoustic communication and underwater acoustic detection; (2) maximum utilization of equipment; (3) effective improvement of sonar work efficiency; (4) real-time underwater multi-acoustic detection Co-probing between platforms.

Description

technical field [0001] The invention relates to an integrated underwater communication detection method, which belongs to the field of underwater acoustic communication and underwater acoustic detection. Background technique [0002] The idea of ​​communication and detection integration technology originated from the field of radar communication integration. Most land combat systems are equipped with radar and communication electronic systems. The integration of radar communication systems can realize resource sharing, dynamic grouping and high availability. , while reducing system electromagnetic interference and energy consumption, reducing maintenance costs, thereby improving the overall performance of the electronic system. [0003] Similar to the situation on land, there are also requirements for detection and communication underwater. In recent years, underwater combat methods have gradually developed towards informatization and networking. The existing sonar system h...

AI Technical Summary

Problems solved by technology

[0004] However, underwater acoustic communication and underwater acoustic detection have strong similarities in terms of theoretical basis, system structure, and signal processing, which provides the possibility for the realization of the integration of underwater acoustic communication and detection.

However, the relatively mature radar communication integration technology on land cannot be applied underwater due to the high complexity of the underwater acoustic channel.

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