The paper mainly accomplishes a digital radio navigation hardware processing platform based on digital middle frequency technology under the invention of radio navigation.The platform can achieve acquisition,tracking of the radio signal and pick up useful observation data and put out navigation message by GUI deriving by navigation algorithm.With the principles of DS-SS(DirectSequence-SpreadSpectrum) and anti-interference introduced,the components,function,working mode and positioning theory of the navigation receiver are analyzed at first.Then the paper proposes a FPGA+DSP+ARM hardware architecture by reference of the receiver in existence with its key components described.After that detail realization of the hardware platform is given,including A/D converter,FPGA,DSP and ARM units as well as communication I/O interface.Finally the debugging of hardware and software of DSP and ARM are carried out carefully,including double BOOT loading,initialization of PLL and EMIF and detection of FLASN I/O data and EDMA for DSP unit and boot-loader initialization of the S3C2410A for ARM unit in addition with LCD configuration and its programming.The subject is meaningful in its development of an independent hardware platform in domestic where nearly all receivers are adopts OEM from abroad.By the design and research of the subject,valuable experience of hardware platform design is acquired which will be of help for receiver research and design at home in the following days.