基于扫描旋转同步运动的三维成像方法

In order to meet the requirements of rapid detection of stealth performance of in-service fighters, a scattering measurement method based on vertical scanning and azimuth rotation synchronous motion is proposed. The vertical guide rail, turntable, data processing terminal, RF transceiver equipment, and transceiver antenna pair make up the majority of the measuring system. When the antenna transmits the frequency step signal, it horizontally rotates the target to be measured on the turntable. At the same time, the transceiver antenna pair scans the target to be measured in the vertical direction. Taking the combination of point targets as an example, the parameter configuration of the measurement system is determined through theoretical analysis and simulation calculation, and the three-dimensional imaging performance of the system under different parameter configurations is compared. The simulation results show that the scattering measurement method of vertical scanning and azimuth rotation synchronous motion can realize three-dimensional imaging. When compared to the traditional cylindrical scanning approach, there is a 92% reduction in measurement time while maintaining the peak sidelobe ratio of 12 dB. The measurement method has the characteristics of high test efficiency, simple system construction and easy adjustment. It provides an effective measurement method for the scattering source diagnosis of stealth aircraft in service.