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为了在实验室内进行复合寻的制导系统的性能验证和评估,需要产生模拟射频/红外的复合信号,红外/射频共口径目标模拟器是产生该复合信号的一个关键部件.采用(MOM)和物理光学法(PO)相结合的方法具体分析了红外/射频共口径系统中辐射近场区和远场区电场强度相位分布情况,并对辐射近场区电场强度相位进行了实际测试,两者取得了较好的吻合.在辐射近场区完成了通常情况下天线远场才能实现的目标模拟,大大缩短了测试距离.
In order to validate and evaluate the performance of complex guidance systems in the laboratory, it is necessary to generate a composite RF / IR signal which is a key part of the composite signal generation.MOM and Physical optics (PO) method to analyze the phase distribution of the electric field intensity in the near-field and far-field regions of the radiation in the infrared / radio frequency co-aperture system in detail. The field intensity field in the near-field radiation field is actually tested. Achieved a good match.In the near field radiation area to complete the antenna far under normal circumstances to achieve the target simulation, greatly reducing the test distance.