Design Of Signal Processing Platform For Anchored Acoustic Positioning Buoy

China has a vast sea area,and the construction of naval equipment and the development of the ocean have always been important topics for our country.Underwater acoustic technology plays an important role in it.This article improves the signal processing platform in traditional long baseline positioning systems,which has single functions,weak scalability,and weak integrity.A new type of anchor bottom acoustic positioning buoy signal processing platform based on TL-5728 core board is designed.This article has completed the hardware circuit design and debugging of the platform,the construction of the development environment,the design of software applications,the design and implementation of signal processing algorithms,and verified the system functions through relevant tests.This article completes the selection of device models and designs relevant hardware circuits based on the functional requirements and design indicators of the anchor bottom acoustic positioning buoy signal processing platform.This system selects Chuanglong’s TL-5728 core board as the core of the signal processing platform,and cooperates with interface circuits to complete tasks such as data transfer and signal processing.The core board adopts dual core ARM and DSP processors,which have advantages such as excellent performance,small footprint,and strong environmental adaptability.After completing the hardware circuit design and debugging,the relevant software program design for the ARM part was carried out on the basis of the completion of the Linux environment,mainly including the UART serial communication module,UDP/TCP network communication module,positioning information reception and analysis module,data packaging and storage module,and ARM inter core communication module.On the basis of completing the design of the signal detection and estimation algorithm based on copy correlation method,relevant software programs for the DSP part were designed,mainly including signal processing module,DSP inter core communication module,and thread scheduling module.The peripheral circuit interface in this system adopts high-speed and universal interfaces,which have the advantages of large transmission bandwidth,strong compatibility,and good real-time performance.The system integrates data transfer and data processing functions on a single core board,and utilizes fast and stable IPC inter core communication to achieve communication between ARM and DSP.This not only improves the stability of transmission but also strengthens the overall system,It can avoid network congestion caused by multiple platforms sharing the network.For the above designs,verification has been completed through testing,and the overall functional testing of the system has been completed through laboratory joint debugging and lake trial,verifying the feasibility and stability of the system.