基于汽车防撞雷达的伪随机码设计

Design of Pseudo Random Code for Automobile Collision Avoidance Radar

对伪随机码进行设计,以达到较高的灵敏度和分辨率。通过对伪随机码产生的原理的分析,得到其常用的反馈逻辑式;然后利用FPGA平台,对代码段中的寄存器长度、反馈结构、初始化信息等模块作相应修改,可得到不同长度和反馈逻辑的线性反馈移位寄存器,进而得到不同长度和结构的伪随机码。仿真分析及实验验证了该设计的可行性及有效性。

A pseudo-random code is designed to achieve high sensitivity and resolution for automobile collision avoidance radar.By analyzing the principle of pseudo random codes,a common feedback logic is obtained.On an FPGA platform,the register length,feedback and initialization information in the code are modified.Linear feedback shift registers with different code length and feedback logic are used,and thus pseudo random codes of different lengths and structures are obtained.Simulation and experiments show feasibility and effectiveness of the design.