高平面分辨率穿透成像雷达的研究与实现

Research and implementation of high planar resolution penetrating imaging radar

穿透成像雷达利用电磁波对介质的穿透特性,对非金属介质内的不连续点进行高分辨成像。为实现该雷达系统的毫米级高平面分辨率、高探测效率和高便携适用性,设计了高平面分辨率穿透成像雷达系统。采用连续波体制和快速扫描空间采样方案以确保小型化和高成像性能,实现了一体化雷达射频前端;提出了参数未知条件下的自聚焦成像处理等数据处理方法,研制了穿透成像雷达系统样机,质量仅为2.5 kg,可单人手持操作;开展了成像分辨率和穿透能力实验测试,验证了方案的可行性和有效性。

Penetrating imaging radar technology uses the characteristics that the electromagnetic wave can penetrate the medium,to get high-resolution image of discontinuities in the non-metallic medium.In order to realize millimeter high plane resolution,high detection efficiency and high portability of the radar system,a high plane resolution penetration imaging radar system was designed.Continuous wave system and fast scanning spatial sampling scheme were adopted to ensure miniaturization and high imaging performance.An integrated radar RF front end was realized.Data processing methods such as autofocus imaging processing under the condition of unknown parameters were proposed.A prototype of penetrating imaging radar system,which weighs only 2.5 kg and can be operated by one person and one hand,was developed.The experimental tests of imaging resolution and penetration ability were carried out to verify the feasibility and effectiveness of the scheme.