Abstract:

In view of the antijamming effectiveness evaluation of changing polarization technology, antijamming effectiveness is analyzed when there exist two linear polarization jamming waves in the detection area of radar, which is based on the antijamming effectiveness evaluation method of single polarization jamming. The quantitative relationship of the antijamming gain, power ratio and the included angle of the polarization state point is proposed, and the antijamming effectiveness evaluation method is discussed when there exist two or more random polarization jamming waves in the detection area of radar. A series of correlative experiment results indicate that the antijamming gain for single polarization jamming is greater than 20 dB and the antijamming gain for multiple active jamming is greater than 3 dB.