High Dynamic Gnss Receiver Circuit Design And Implementation

With the continuous development of the satellite navigation, the development and innovation of key technologies in GNSS multimode receiver attracts more and more attention from all around the world. This project does research on the principle of GNSS systems, analyze the theoretical knowledge of high dynamic the GNSS receiver, and then design the hardware circuit under this atmosphere and environment.The overall architecture of the paper is as follows:(1) Elaboration of GNSS system background, introduction of types, analysis of significance;(2) Introduction of GNSS system Principle:GNSS composition, the introduction of satellite signals, navigation message characteristics introduced;(3) Firstly principles of high dynamic GNSS receiver design and the concept of overall structure is introduced; Secondly the antenna and RF front-end, baseband processor (AD module, FPGA capture module, DSP tracking module), display and control module are divided according to function. Meanwhile, the details of the theoretical knowledge of various modules and the design of hardware implementation of the various modules of the circuit is elaborated; then the overall system architecture of the GNSS receiver is described combined with the design of the various modules, a detailed analysis and research is carried out, with a analysis and introduction of the whole receiver PCB design and link budget; Finally, the corresponding receiver design is adjusted according to the related details, and ultimately a high dynamic GNSS receiver with strong function and good performance is completed successfully.(4) The discussion and prospect of future GNSS receiver development.This paper designs a high dynamic GNSS receiver hardware platform, its test results shows that it can quickly and accurately positioning the GNSS system satellite.A high dynamic GNSS receiver which is designed by this paper has the advantage of continuity, reliability and effectiveness, and therefore it has a great competitive advantage in the current market of receiver.