无线电引信的超宽谱辐照效应及其防护
Radiation effects of ultra-wide spectrum on radio fuze and its protection
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摘要: 探讨了超宽谱高功率微波对无线电引信的辐照效应、耦合机理和防护方法。利用超宽谱高功率微波辐照源对多姿态的无线电引信进行了辐照实验并对结果进行了分析，实验表明当引信和弹体的轴向与超宽谱高功率微波的电场极化方向一致时，引信最容易被引爆，辐照效应最明显。通过理论分析和辐照实验找出超宽谱高功率微波能量耦合机理为：引信和弹体上感应的瞬变电压通过引信电源电路传递到执行电路，瞬变电压上升率超过了电路中晶闸管的断态电压临界上升率，使晶闸管意外导通，导致引信误动作。在不影响引信工作特性前提下，采取增加防护器件和替换敏感器件的加固方法，可以提高引信抗干扰能力。采用综合防护加固方法可使引信在超宽谱高功率微波辐照下不再产生误动作，达到了防护加固的目的。Abstract: This paper discusses the ultra-wide spectrum high power microwave(UWS-HPM) radiation effects, coupling approach, action mechanism and protection methods of specified radio fuze. Radiation experiment has been done on multi-pose fuze using UWS-HPM generator. The experiment indicates that radiation effects are the strongest when the axis of projectile are parallel to the E-field polarization direction of the UWS-HPM. Theoretical analysis and radiation test reveal the coupling mechanism of UWS-HPM energy: the pulse current coupled by the fuze and projectile transmits to fuze executive-circuit through power-supply-circuit of the fuze, rising rate of the pulse current exceeds the dV/dt(critical rate of rise of off-state voltage) of SCR(silicon control rectifier). Adding protection component to e
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Key words:
- radio fuze /
- ultra-wide spectrum /
- radiation effects /
- coupling mechanism /
- protection method
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