共形天线阵列极化分集问题

Polarization diversity of conformal antenna array

在多模复合制导模式下,被动雷达导引头(PRS)可采用共形天线阵列接收入射信号。共形天线通常为线极化天线,将其摆放在弹体的一周,天线阵列的接收信号将出现极化分集问题。针对该问题,建立了在极化分集条件下共形天线阵列接收信号的数学模型,理论推导极化分集对干涉仪方法测向性能的影响,以及分析干涉仪方法能够正确测向的前提条件,通过计算机仿真实验验证了研究结论的有效性。该文给出了解决共形天线阵列极化分集问题的研究思路。

Conformal antenna array can be utilized to receive the incoming signal for passive radar seeker in multimode compound guidance mode. Generally,conformal antenna is in linear polarization, surrounded by the elastomer,which will lead to polarization diversity. The receiving signals model of conformal antenna array is built. The effects of antenna polarization diversity on the interferometer direction finding performance are studied. The precondition of interferometer method getting right result is analyzed. Finally,the effectiveness of conclusion is verified by the computational simulation results. This paper gives an idea which will make PRS get right direction finding result,to solve the polarization diversity of conformal antenna array.