基于监控单元的信道质量的自测

Test of Channel Quality Based on Monitoring Unit

利用现有监控单元硬件平台,在FPGA内部增加误码测试功能对信道通信质量进行测试。地面(机载)设备的监控单元产生伪码数据,通过地空通信中信道进行传输,机载(地面)设备接收伪码,然后对其进行比对,通过软件计算出地空信道的误码率,通过LCD对测试信道误码率实时显示,并对测试结果进行存储,从而为用户在试验前提供参考依据。

This paper introduces BER tester added into FPGA which could test the communication quality with the hardware of monitoring unit without any hardware increased.The ground-air communication channel BER could be figured out from software by comparing the PN code produced by the monitoring unit of the ground （airborne） equipment and transmitted by the ground-air communication channel with the PN code received by the ground （airborne） equipment.At the same time the real time BER could be displayed using LCD and is stored,which is used as the reference before the experimentation.