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设计低截获概率超宽带信号在战时通信中具有重要的现实意义。在抗截获性能指标分析的基础上,构建脉冲干扰模型,针对脉冲幅度调制超宽带系统,运用随机过程、信号统计理论和实验仿真,对信号脉冲参数、跳时码参数与抗截获性能之间的关系进行研究。仿真和分析表明增大跳时码周期和减小单位发射脉冲时延两种方法能很好地提高抗截获性能;而减低信号脉冲宽度虽能提高隐蔽性能,但在脉冲干扰实时改变时误码率会大大增加。新的研究结果为系统的参数选择策略提供有价值的参考。
Design of low probability of intercept probabilistic UWB signals has important practical significance in wartime communication. Based on the analysis of anti-interception performance index, the impulsive interference model is built. According to the pulse amplitude modulation UWB system, using the stochastic process, signal statistics theory and experimental simulation, the relationship between signal pulse parameters, time-hopping code parameters and anti-interception performance Relationship research. The simulation and analysis show that the two methods can increase the anti-interception performance effectively when the hopping code period is increased and the transmitting pulse delay is reduced. However, reducing the signal pulse width can improve the concealment performance. However, when the pulse interference changes in real time, the error code Rate will greatly increase. The new research results provide a valuable reference for the system parameter selection strategy.