一种高速跳频跟踪干扰接收机设计

    Design of a High Speed Frequency Hopping Follower Jamming Receiver

    • 摘要: 基于高速跳频信号的引导式跟踪干扰,通过对跳频信号跟踪距离时间分析,文中针对HaveQuick(HQ)定、跳频,单、多网台跟踪干扰设计了一种可调谐宽带跟踪干扰接收机,接收机具备单工工作和双工工作模式。为了提升干扰发射有效功率以及快速切换多频带工作需求,接收机发射和接收采用高线性窄带可调谐滤波器,滤波器采用8位调谐电容,3 dB相对带宽1%,在中心频率0.9f0~1.1f0外抑制达到了46 dBc,实测滤波器输入P-1大于29 dBm,跳频时间为4 μs。外场测试当通信站两者距离在5 km时,跟踪干扰机在10 km内的跟踪干扰效果良好。

       

      Abstract: Based on the guided tracking interference of high-speed frequency hopping signals, through the analysis on the distance and time of frequency hopping signal, a tunable broadband follower jamming receiver is designed for HaveQuick (HQ), which has fixed frequency, high-speed frequency hopping, single and multi network station, the receiver has both simplex and duplex working modes. In order to enhance the effective power of interference transmission and and meet the requirements of fast switching between multiple frequency bands, the receiver adopts a high linear narrowband tunable filter, the tunable filter uses 8 bit tuning capacitors with a 3 dB relative bandwidth of 1%, the rejection of center frequency out of 10% reaches 46 dBc, the input P-1 is greater than 29 dBm, and the frequency hopping time is only 4 μs. Experimental testing shows that when the communication station is at 5 km, it can achieve tracking interference within 10 km.

       

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