警用数字化扰频技术的研究

【作者】 盛亦军；

【导师】 徐万和；

【作者基本信息】 南京理工大学 ， 火炮与自动武器， 2004， 硕士

【摘要】 警用强干扰设备常采用阻塞式干扰，在工作时既干扰了犯罪分子的无线电引爆信号，也使自己的通讯联系受到阻碍。为解决这一问题，提出两种解决办法： (1)使用融合了线性频谱搬移技术、数字频率合成技术以及声表面波滤波技术的“可编程陷波法”，在干扰频段内任意开辟出通讯频段窗口； (2)利用数字扫频技术，任意调节扫频信号范围，从而在干扰频段内开辟出通讯频段窗口。 在原理阐述、理论推导的基础上对以上第一种方法进行了详细论证和原理方案设计，对第二种方法进行了可行性分析以及初步设计，最后客观地对这两种方法做出定性的比较与分析。更多还原

【Abstract】 Usually the powerful disturbance equipment used by policemen works at block jam-mode. When it is working, its output signal will jam all the radio wave which has the similar frequency, not only to the offenders’s detonating signal but also to the policemen’s communication signal. There are two ways to solve this problem.(1) Use method (1) named "the programmable trapping wave", which is merged with frequency spectrum convert in linear ,Direct Digit Synthesizer and Surface Acoustic Wave Filter, to open a communication band in jam-band willfully.(2) Use the technology of digit frequency-sweep (method 2) to adjust the sweep range in order to open a communication’s window in jam-band.Based on the principle elaboration and theory inference, the first method has been demonstrated in detail and has been specifically designed as well . A feasibility analysis and a initial design has also been given in the second method. Finally, an objective comparison has been made between these two methods.更多还原