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Abstract：
The increasingly complex electromagnetic environment of modern warfare and the proliferation of intelligent jamming threaten to reduce the survival rate of radio fuzes on the battlefield. Radio frequency (RF) stealth technology can fundamentally improve the anti-interception and reconnaissance capabilities of radio fuzes, thereby lessening the probability of them being intercepted, recognized, and jammed by the enemy. In this paper, an RF stealth waveform based on chaotic pulse-position modulation is proposed for ultra-wideband (UWB) radio fuzes. Adding a perturbation signal based on the Tent map ensures that the chaotic sequences have sufficiently long periods despite hardware byte limitations. Measuring the approximate entropy and sequence period shows that the Tent map with the addition of perturbation signals can maintain good randomness under byte constraints, closely approximating the Tent map with ideal precision. Simulations verify that the proposed chaotic mapping used to modulate the pulse position of an ultra-wideband radio fuze signal results in superior detection, anti-interception, and anti-jamming performance.
摘要：
现代战争日益复杂的电磁环境和智能干扰的扩散威胁着无线电引信在战场上的存活率。射频(RF)隐身技术可以从根本上提高无线电引信的抗拦截和侦察能力,从而降低了它们被拦截的可能性，认可,被敌人卡住了.在本文中,针对超宽带（UWB）无线电引信，提出了一种基于混沌脉冲位置调制的射频隐身波形。基于Tent映射添加扰动信号确保了混沌序列具有足够长的周期,尽管有硬件字节限制。测量近似熵和序列周期表明，添加扰动信号的Tent映射在字节约束下可以保持良好的随机性，以理想的精度接近帐篷地图。仿真验证了所提出的混沌映射用于调制超宽带无线电引信信号的脉冲位置,反拦截,和抗干扰性能。
