An Airborne Ultrashort Wave Radio Filtering Module Design And Implementation

Airborne ultrashort wave radio station in the process of practical everyday use,because of insufficient antenna isolation, noise is big in the transmitting and receiving,in order to solve the problems of the insufficient antenna isolation, communicate and coordinate with makers, decided to develop type filter module and radio control box, in airborne ultrashort wave radio receiving front-end module is installed in the filter is used to improve the resistance to electromagnetic interference radio.This item is through the optimization of filter module of hardware and software design, realization of frequency selective filtering of frequency information.First of all, this project at the beginning of the design, research the usage of the existing filtering module, analysis, and according to the needs of users, the functions,performance index of filter module, and the design scheme is determined.Secondly, this project in the hardware design adopts the modular design thinking, the filter module hardware to carry on the reasonable division, is divided into switch parts,filter parts, drive, power supply and so on four parts.By adopting the combination of circuit diagram and simulation figure way to verify that the hardware design is reasonable and correct.At the same time, fully considering the security and reliability of filtering module, environmental adaptability and relevant requirements, and to carry on the design.Finally complete the hardware design, and the preliminary outline drawing and interface engineering prototype is formedThe project is in the process of software design, through software architecture to gradually clear the ability of software requirements, external interface requirements,internal interface requirements, and the ability of filtering module software and external interface, internal crosslinking relation in the interface of the software and true value table.Then through the software running processes, such as initialization, data reception,data analysis and control processing to design software.Complete control of the frequency data and processing, the realization of the choice of frequency and output.Finally, after filtering module of the design of hardware and software, through the project development to achieve design requirements.Verified by test of all kinds of environment, the filtering module the indicators have reached the design requirements...