In such mobile platforms as ships and aircraft, the detection and reconnaissance devices are near to the communication facilities. When working at the same time, they will create interference or jamming themselves. Especially, the high-power radar equipment tend to cause a high bit error rate (BER) in the data link system (DLS), with the result that the DLS cannot operate normally. For this reason, this paper makes a study of the BER performance of the DLS under the pulse linear frequency modulation (LFM) interference in the time-varying Rayleigh channel. In view of the the time-varying characteristics of channel in the practical conditions, the interference channel is modeled as a time-varying Rayleigh fading channel and the formula of BER is derived. Through simulation, the theoretical deduction is proved to be correct. This is of much importance to analyzing the variation of BER performance with the pulse width, power and doppler frequency shift under the pulse LFM interference.

中文翻译：

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时变瑞利信道中脉冲LFM干扰下数据链路系统误码率性能分析

在诸如船舶和飞机的移动平台中，检测和侦察设备靠近通信设施。同时工作时，它们会产生干扰或干扰自己。尤其是，大功率雷达设备趋于在数据链路系统（DLS）中引起高误码率（BER），结果DLS无法正常运行。因此，本文研究了时变瑞利信道在脉冲线性调频（LFM）干扰下DLS的BER性能。鉴于实际情况中信道的时变特性，将干扰信道建模为时变瑞利衰落信道，并推导了BER的公式。通过仿真，证明理论推导是正确的。