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采用功率倒置算法的自适应天线系统特别适合于卫星导航系统等信号很弱而干扰较强的场合。在有干扰信号的时候,只有当干扰信号功率大到一定程度之后功率倒置阵才对其有抑制效果。为了指导设计满足卫星导航接收机抗干扰应用的功率倒置阵系统,对功率倒置阵的抗干扰特性进了详细的理论分析与实验研究。理论分析的结果表明,通过合理地选择环路增益可以调整功率倒置阵的稳态性能,使其满足卫星导航接收机的抗干扰要求。对功率倒置阵系统的实验测试也验证了理论分析的正确性,同时也证明了所设计的功率倒置阵系统具有良好的抗干扰性能,具有很好实用价值。
The adaptive antenna system using the power inversion algorithm is particularly suitable for situations where the signal such as the satellite navigation system is weak and the interference is strong. When there is interference signal, the power inversion matrix can suppress the interference signal only when its power reaches a certain level. In order to guide the design to meet the anti-jamming applications of satellite navigation receiver power inversion matrix system, anti-interference characteristics of power inversion matrix into a detailed theoretical analysis and experimental study. The theoretical analysis shows that the steady-state performance of the power inversion matrix can be adjusted by choosing the loop gain rationally so that it meets the anti-interference requirement of the satellite navigation receiver. The experimental test of the power inversion matrix system also verifies the correctness of the theoretical analysis. At the same time, it also proves that the designed power inversion matrix system has good anti-jamming performance and has good practical value.