基于非整数阶SSC盲移频的LFM雷达干扰技术

LFM Radar Jamming Technology Based on Non-integer Order SSC Blind Frequency Shift

传统频谱扩展与压缩(SSC)盲移频干扰的阶数为整数,为了实现精确的位置干扰,需要调整不同的处理延时,在实际应用中存在一定的局限性。该文对整数阶盲移频技术进行了改进,提出了一种基于非整数阶SSC盲移频的LFM雷达干扰技术。该技术在干扰机处理延时不变的情况下,通过改变SSC盲移频的阶数来实现精确的位置干扰。该文推导了一种高效的非整数阶SSC盲移频干扰实现方法,同时通过Newman序列控制信号的初相来减小压制干扰信号的峰均比(PAPR)。仿真结果表明,该文算法在指定干扰机处理延时的情况下,可以实现假目标欺骗干扰和相参密集压制干扰,能够有效对抗脉冲压缩体制雷达,具有较好的工程应用价值。

The order of traditional Spectrum Spread and Compression(SSC)blind frequency shift jamming is an integer.To achieve accurate position interference,different processing delays need to be adjusted,which has certain limitations in practical application.In this paper,the integer order blind frequency shift technology is improved,and a Linear Frequency Modulation(LFM)radar jamming technology based on non-integer order SSC blind frequency shift is proposed.The jamming can be realized by changing the precise position of the radar in different situations.In this paper,an efficient implementation method of blind frequency shift jamming for non-integer order SSC is derived.Meanwhile,the initial phase of the signal is controlled by the Newman sequence to reduce the Peak-to-Average Power Ratio(PAPR)of the jamming signal.The simulation results show that the algorithm can achieve false target deception jamming and coherent dense suppression jamming under the processing delay of a specific jammer,which can effectively counter pulse compression radar,and has good engineering application value.