S模式ADS-B系统地面接收机中的前导检测

The Preamble Detection In the ADS-B System Based on the S Model

S模式ADS-B系统的使用可以有效地解决传统雷达监视系统存在监视盲区和监视精度不高的问题。基于FPGA用Verilog HDL完成前导检测环节的设计,可以准确地检测到在四个有序脉冲位置上是否存在前导脉冲,并进一步判断在有效脉冲位置上的前导脉冲的前沿类型,最终完成报头信息的前导检测。测试表明通过该设计可以准确地完成S模式ADS-B系统地面接收机的前导检测。

Using the S Model ADS-B System can effectively solve the problem that the traditional radar has not only the monitoring blind area but also monitoring accurately enough.Through the FPGA implementation of preamble detection with Verilog HDL language design can be accurately de-tected in four orderly pulse position if there is a preamble pulse,and further judgment on the effective pulse position of leading the forefront of pulse type. Test shows that this design can accurately complete preamble detection.