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波束合成技术是复合制导半实物仿真系统中的关键技术。利用薄膜干涉理论设计了多层结构的红外/微波波段波束合成器,实现了在二维平面大角度范围内对宽频段波束的合成,并对这种结构对红外的反射率和对微波的透射率进行了理论计算和分析。在红外波长为8.8～10.6μm,入射角在0o～58o范围时,该结构的反射率达到98%;在2～12 GHz波段内,微波入射角在0o～55o时,透过率最高能达到98%,波束合成器的尺寸为1 200 mm×800 mm。
Beam synthesis technology is the key technology in the composite guidance hardware-in-the-loop simulation system. Based on the theory of thin film interference, a multi-layer structure infrared / microwave band-beam synthesizer is designed to realize the synthesis of wide-band beams in the wide angle range of two-dimensional plane. The infrared reflectance and microwave transmission The rate of theoretical calculations and analysis. The reflectivity of this structure reaches 98% when the infrared wavelength is 8.8 ~ 10.6μm and the incident angle is in the range of 0o ~ 58o. When the microwave incident angle is 0o ~ 55o in the wavelength range of 2 ~ 12 GHz, the transmittance can reach the maximum 98%, beamformer size of 1 200 mm × 800 mm.