Distributed Radar Target Information Preprocessing And Design And Implementation Of Control

With the development of FPGA, its application fields are expanding constantly. FPGA has been used in radar signal processing by researchers. Because of the great amount of radar signal data and requirement of real-time signal processing, the traditional DSP processor cannot meet the requirements. On the other hand, FPGA can work parallel and is easy to implement in assembly line, it will gradually replace the dominant position of DSP in the field of radar signal processing.This thesis researches the distributed radar controller and target information preprocessing. The main works are as follows:1. The relationship between digital signal edge time and bandwidth are introduced. Various factors affecting the signal integrity are analyzed, which include transmission line theory, signal reflection, crosstalk, differential interconnect, impedance matching, transmission line topological structure and other related theories.2. The design of the distributed radar control and signal preprocessing hardware implementation is finished, including the choice of system scheme and key components selection. The principle diagram of the system includes the UART serial port module, data sampling circuit modules, a differential drive circuit module, distributed radar target information receiving circuit module and PCB design, PCB production and signal integrity simulation of key signal.3. Distributed radar target information preprocessing of each basic module implements are finished, such as CORDIC cosine module, single-precision floating-point addition, single precision floating-point multiplication, the number of fixed point and floating-point conversion to each other. Finally, the timing simulation of basic module is completed and comparison with the MATLAB simulation results is done and desired accuracy is reached.4. Received target information preprocessing and the transformation from radar coordinate system to the array coordinate system are finished. The combining all the previous basic modules can be implementd array coordinate system distance, direction, pitching angle. The results and analysis of simulation are given and the comparison with the MATLAB simulation results is done and desired accuracy is reached.