一种数据链阵列天线全频点压制干扰抑制算法

提出了一种数据链通信系统阵列天线全频点压制干扰抑制算法,在数据链通信系统的时域、频域抗干扰能力的基础上增加了空域抗干扰能力。首先利用跳频脉冲周期内非有效脉冲时间段内的采样数据进行协方差矩阵估计;然后通过功率倒置准则计算抗干扰权值向量;最后对接收信号进行加权输出,实现在有效脉冲到达时只抑制压制干扰成分而不抑制有效脉冲的目的。通过计算机仿真试验验证了所提方法的正确性和有效性。

Data Link Full Frequency Points Interference Suppression Method Based on Antenna Array

A full frequency points interference suppression method based on antenna array for data link communication system was proposed. The spatial interference suppression ability was added for data link communication system except for the original interference suppression ability in time domain and frequency domain. Firstly, the covariance matrix is estimated using the sampling data in the non-valid pulse period in a frequency hopping period. Then the anti-jamming weight vector is calculated by power inversion criterion. Finally, the received signals are weighted to achieve the purpose of suppression the jamming signals only. The correctness and effectiveness of the proposed method are verified by computer simulation.