Design & Implementation Of Imaging Sonar Signal Processing Platform Based On ADSP-TS203

The coverage of optical imaging devices is limited by bad hydrological condition when using the devices to detect the surface of underwater object such as wreck, pipe-laying, dykes and dams. Correspondingly, the imaging sonar has less restriction and gets clear images even in the dark or turbid water. So the acoustic imaging technique plays an important role in the development of the underwater imaging devices. With the development of the technology, imaging sonar is more precisely and works in real time, thus its signal processing platform must calculate quickly and have broad data transfer bandwidth.This dissertation puts forward a new platform which is suitable for signal processing in imaging sonar. The platform has one ultrahigh performance processor ADSP-TS203 as the calculate kernel and one FPGA as the logic centre. Data import from the HOTLink—a kind of high-speed serial transmission, and export to the CPCI bus—a kind of high-speed parallel bus. This architecture lets platform have high performance both in calculate and data transfer.The most three familiar noise of the high-speed circuit have been analyzed and emulated to optimize the platform when designing PCB. These works solve the SI (Signal Integrity) problem and make the platform be more robust.Designed and compiled the routine of the interface logic control in FPGA. The FPGA has four interfaces which connected to DSP bus, DSP link port, HOTLink, and PCI 9656. Each interface was verified and performs well.This signal processing platform not only satisfies the project needs, but also can be used to validate imaging sonar data processing algorithms.