PowerPC-based Enhanced Ground Proximity Warning System Technology

As modern aviation attaches more and more importance to flight safety,in order to avoid the tragedy of Controlled flight into terrain accidents,the Enhanced ground proximity warning system has become a necessary consideration for the new research and modification project of the national aircraft.In the security and confidentiality requirements,the Ground proximity warning system of the national military aircraft assembly must be independently produced by domestic manufacturers and must have a reliable supply guarantee.However,the Ground proximity warning system that domestic manufacturers have be used mostly base on the X86 architecture,which has the disadvantages of unstable performance,high heat generation,weak data processing capabilities,and poor environmental adaptability.The paper revolves around how to improve the technical and tactical level of the Enhanced ground proximity warning system,explores the construction of hardware circuits based on the PowerPC processor,and uses advantages such as good reliability,real-time performance,and high stability of the PowerPC processor,to improve the capabilities of various aspects of data communication,signal processing,and alarm model calculations of the domestic Enhanced ground proximity warning system.The main contents of this article include the analysis of the needs of the eight alarm functions of the Enhanced ground proximity warning system,the establishment of the hardware platform and the realization of the software functions.Firstly,the timing,flight parameter requirements,and mathematical model construction of the eight alarm function modes of the system are described in detail.Secondly,the circuit design methods for each hardware function module and the board-level PCB design methods are presented,and the reliability thermal analysis of the the board-level components are analyzed.Thirdly,the concrete implementation flow of system application software is given,and the situation of adaptability improvement and transplantation based on existing mature ground proximity warning system software during the process of software program preparation is introduced.Fourly,the software filling,database loading,software and hardware debugging,and functional testing of the system using a special test equipment for ground proximity warning system were introduced.The specific operation methods and test results of the system's eight alarm function tests,four kinds of control function tests,and alarm response time tests were given.Finally,summarize the research progress of the project and point out the problems and deficiencies in the current research work.Through the research of this thesis,the replacement of the original X86 hardware platform by the PowerPC hardware platform is completed,and the original intention of improving the technical and tactical level of the domestic Enhanced ground proximity warning system is realized.