ADS-B系统应答的一种纠错算法设计与实现  

Design and Implementation of An Error-Correcting Algorithm for ADS-B System Responding

作　　者：周建红[1] 刘晓斌[1] 张超[1] 

机构地区：[1]电子科技大学,成都611731

出　　处：《火控雷达技术》2011年第3期91-95,共5页Fire Control Radar Technology

摘　　要：ADS-B是基于Mode S数据链的一种技术,可以为传统雷达无法覆盖的区域提供监视服务。本文介绍了基于模式S的ADS-B系统基带数字信号处理流程,阐述了循环冗余编码(CRC)的工作原理。基于模式S的ADS-B系统,提出了一种基于循环冗余编码(CRC)的纠错算法;然后给出了纠错算法的FPGA实现方案,整个设计划分为多个功能模块,全部采用Verilog HDL硬件描述语言实现。最后进行了电路仿真实验。实验结果表明,该方案设计合理,能够有效地对ADS-B系统应答信号进行纠错,提高了ADS-B系统应答信号传输的可靠性。Automatic Dependent Surveillance Broadcast （ADS-B） is a technology based on Mode S data link, it can provide surveillance to the areas which can not be covered by the traditional radar. The flow of base-band digit- al signal processing in ADS-B system based on Model S is introduced, and the working principle of cyclic redun dancy check （CRC） is described. Then, an error-correcting algorithm based on CRC for Mode S based ADS-B system is presented, and its FPGA logic design is given. The whole design is divided into several functional modules which are fulfilled by Verilog HDL. Finally, the feasibility of this algorithm is verified by the circuit simulation experiment, which shows that the algorithm can effectively carry out error correction for ADS-B responding signal and can improve the transmission reliability of responding signal for ADS-B system.

关 键 词：ADS-B系统 基带处理 CRC编码 纠错 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]