基于实测数据的稀布阵雷达副瓣对消研究

Sidelobe cancellation design of SIAR based on measured data

米波稀布阵雷达是一种稀疏分布式数字雷达,文章结合其特点进行对消需求分析,并结合试验数据对干扰对消性能进行分析,实验表明采用干扰对消方法可成功完成综合脉冲孔径雷达对干扰源的抑制。但由于对消过程中权系数的计算需要对强相干的接收信号进行矩阵求逆,干扰对消对计算精度要求很高,同时在干扰幅度起伏严重的情况下准实时干扰对消性能存在损失,需脉冲重复周期内实时对消。

Sparse array meterwave radar is a kind of sparse distributed digital radar.In this paper,according to the characteristics of this kind of radar,its cancellation demand and interference cancellation performance are analyzed based on the experimental data.The experimental results show that by using the interference cancellation method,the synthetic impulse and aperture radar（SIAR） can successfully suppresses the interference sources.As the inversion matrix of strong received signals is required to get the stable weight coefficient during the cancellation process,the high calculation accuracy of interference cancellation is necessary.When the amplitude fluctuation of interference is severe,the quasi real-time interference cancellation performance is affected,and the real-time pulse repetition cycle cancellation is needed.