Design And Implementation Of The Hardware Platform In Airborne Video Processing And Graphics Generation System

With the rapid development of airborne cockpit display technology, the next generation of fighteraircraft will use integrated video graphics display system instead of traditional pointer instrumentdisplay system gradually. Base on this application background, this dissertation is dedicated to thedesign and implementation of the hardware platform in a certain type of airborne video processing andgraphics generation system.The main researches of the dissertation are summarized as follows:1. The architecture design of the hardware platform including interfaces and layering ispresented in the dissertation based on the architectural principles, the hardware platform is decomposedinto three separate layers including video decoding layer, data processing layer and video encodinglayer. The standardized interfaces between layers and the digital interfaces between hardware andsoftware platform are also given in the dissertation.2. Based on the top-down approach, the hardware platform including video encoding anddecoding layer, data processing layer and auxiliary circuit module is designed and implemented fromthe top-level architecture to the bottom-level circuit. The data processing layer is based on dual DDR2memory architecture including operating system memory and independent video memory withhigh-speed FPGA as the core processor. The analog PAL video interfaces and the1.62Gbps high-speedDVI video interfaces are designed and implemented in the video encoding and decoding layer. Thepower delivery network, the clock distribution network and the2.5Gbps high-speed PCI-Ecommunication interfaces, etc. are designed and implemented in the auxiliary circuit module.3. The18-layer high-speed high-density printed circuit board with digital circuits and analogcircuits on board is designed and implemented in the dissertation, the subjects specifically include theboard architecture design, the component placement design, the layered structure design and the layoutconstraint rule design. The final design drawing of the printed circuit board is also given in thedissertation.4. The signal integrity of the important circuit modules in the hardware platform is simulatedand analyzed in the dissertation, the results demonstrated that the power delivery network is broadbandlow-impedance network and the signal quality of the533Mbps high-speed DDR2memory interfaces isgood.5. The comprehensive experiments based on the airborne video processing and graphics generation prototype system are conducted in the dissertation. The results of the experiments show thatall the parameters including the system reliability, the impedance of the signal transmission line, thepower quality and the power consumption, etc. of the hardware platform prove to meet the targetrequirements with large margins. The results also show that all the hardware modules including thevideo interfaces and the high-speed communication interfaces, etc. prove to meet the functionrequirements of the system with good signal quality. The experiments of the prototype system showthat the hardware platform of the system can meet the requirements of the operation of the complexalgorithms in the software platform, which demonstrates that the hardware platform of the airbornevideo processing and graphics generation system in the dissertation has rational design and excellentperformance.