A Platform Design Of Navigation Receiver Based On ARM & FPGA

In recent years,the satellite navigation and positioning industry has been developing by leaps and bounds.The positioning accuracy of navigation positioning system is becoming more and more accurate,and the parsing algorithm is more and more efficient.However,in the complex environment,the general navigation receiver has been unable to meet its positioning requirements,such as high dynamic receiver technology for high speed moving target positioning.Hence we aim at achieving rapid acquisition of satellite navigation signals and stable tracking,in order to do the precise positioning of high-speed moving targets.As a result,it has become an important branch of navigation user receiver.According to the high dynamic application background,this paper designs a platform based on ARM and FPGA navigation receivers.ARM runs fast,and a large number of FPGA interfaces can achieve simple and computationally intensive calculations.The combination of the two is a more common,more popular configuration.The platform includes RF module,AD conversion module,AM3354 part,FPGA part and so on.The main part of the ARM mainly includes DDR,Flash,LCD screen,power supply,SD card,LED,reset,buttons,serial port,etc.The main part of the FPGA includes flash,serial,LED,power supply and so on.In the platform design of the navigation receiver,cadence software made a series of design from the schematic to the PCB layout.In the design of the completed platform,Cortex-A8 AM3354 has achieved the program design,such as navigation message calculation and control procedures.In the process of the schematic design,I focus on the design of the system's RF,power,ARM and FPGA interface,reset and so on.In the process of the power supply design,I not only fully consider the features of the ARM and FPGA power supply and power consumption,but also I add the protection measures,such as overheat protection,overcurrent protection.As a result,it has met the needs of a wide range of system power supply types.Reset design,has mainly solved the ARM and FPGA loading speed problems.The inconsistencies in their loading speeds result in inconsistent reset times.ARM and FPGA need to send information by interface.The design uses ARM's own GPMC interface.The transmission speed of the interface is fast.It is a good choice for ARM and FPGA exchange information.Firstly,the paper introduces the selection of key components in hardware design,and it states that the reasons for choosing these components and the advantages of these components,and then introduces the design process of the overall hardware.It describesthe process of hardware design.By the process,we design hardware schematics and PCB layout,it described the design of the schematic in detail.At last,in the well-designed board,we verify it in order to demonstrate the correctness of the design.