Hardware Design Of General Signal Processing Platform

The signal processing platform has the functions of signal acquisition,collection and processing,used in the field of signal processing,ranging from civilian image acquisition systems to radar systems for national defense.With the development of science and technology,the signal processing platform has been more and more widely used in national defense,industrial and civil fields.However,the development of signal processing platform is seriously restricted due to the long period of hardware development and large investment,and how to develop signal processing platform with fast,efficient and low cost has become a new research direction.In this paper,a general signal processing platform hardware design is proposed to solve this problem,which enables the same hardware structure to be applied to different signal processing fields,so as to shorten the development cycle and reduce the R&D cost.The platform includes two boards,which are AD board that is responsible for data acquisition and processing and DDS board for generating baseband signal.The main work of this paper is to design a general signal processing platform.The thesis involves requirements analysis,system design,device selection,schematic design,PCB design,signal integrity analysis and welding debugging.The main contents of the paper are as follows:By analyzing the different application scenarios of the general signal processing platform,the specific requirements of the general signal processing platform are extracted.From the system-level design,the entire system is divided into two boards,and the overall hardware design of each board is carried out.According to the overall design,AD board and DDS board are carried out the chip secletion and schematic drawing.The main circuit modules include:FPGA peripheral circuit design,DSP peripheral circuit design,high-speed serial link design,power distribution network design,clock network design.With the signal integrity analysis,the design of PCB is introduced in detail.The main modules on the AD board and DDS board were debugged,and the existing problems were analyzed experimentally to find the optimal solution.The common signal processing platform designed in the paper has completed the first edition of the design,which can be initially applied in the R&D process of the signal processing platform,but still need further adjustment and modification.