电光与控制, 2020, 27 (4): 98, 网络出版: 2020-06-15   

红外/激光/毫米波共孔径光学系统设计

Optical Design of an IR/SAL/MMW System with Common Aperture
作者单位
中国航空工业集团公司洛阳电光设备研究所, 河南 洛阳 471000
摘要
为了使导弹具备全天候作战和抗干扰能力, 设计了一种红外/激光/毫米波共孔径光学系统。通过计算设计参数, 确定了共孔径光学系统总体构型: 3个波段共用抛物面主镜;次镜反射红外和激光, 透射毫米波。长波红外模式采用光学被动无热化技术, 设计的光学系统能够保证高低温下的成像性能。半主动激光模式探测器离焦后, 获得激光光斑仿真结果, 表明线性区内满足四象限探测器使用要求。毫米波模式优化次镜后, 计算远场光强分布, 导出的半功率波束角和旁瓣电平均符合设计要求。红外/激光/毫米波共孔径光学系统可以应用于多模复合制导**, 能够较好地适应目标和环境, 显著提高作战效能。
Abstract
An optical system of IR/SAL/MMW band with common aperture is designed to enable the missile all-weather operational capability and anti-interference abilities.The overall layout of the common-aperture optical system is determined by calculating the design parameters.All the three bands are reflected by the primary mirror.IR band and SAL band are reflected by the secondary mirror, while MMW band transmits through it.As to LWIR mode, the optical system designed by using passive athermalization technology performs very well, even when it is exposed to extreme temperatures.As to SAL mode, after the defocusing of the detector, the simulation result of the laser spot with field-of-view in the linear region is obtained, which is suitable for the four quadrant detector.As to MMW mode, after the optimization of the back surface of the secondary mirror, the intensity distribution of the far field is calculated, and the deduced half-power beam angle and side-lobe level conform to the design requirements.The common-aperture IR/SAL/MMW system can be applied to multi-mode combined-guidance weapons, which well adjusts to various targets in bad environment, and improves the combat capability.

陈国强, 秦晓科, 李莹柯, 徐炜, 时光煜, 郭小青. 红外/激光/毫米波共孔径光学系统设计[J]. 电光与控制, 2020, 27(4): 98. CHEN Guoqiang, QIN Xiaoke, LI Yingke, XU Wei, SHI Guangyu, GUO Xiaoqing. Optical Design of an IR/SAL/MMW System with Common Aperture[J]. Electronics Optics & Control, 2020, 27(4): 98.

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