Demonstration of High-Resolution Single-Antenna 3-D Microwave Imaging Based on Hadamard Modulation and Optical Broadband Receiver

We propose and demonstrate a high-resolution single-antenna three-dimensional (3-D) microwave imaging scheme. Combining the spatial decoupling capabilities of Hadamard modulation, and the broadband characteristics of optical receivers, our scheme can achieve high-resolution 3-D imaging resolution with one receiving antenna without scanning. It has been experimentally demonstrated that an unmanned aerial vehicle-shaped target can be successfully imaged in 3-D. According to the measurement, the resolution of the 3-D image can obtain a resolution of better than 4 cm in all three dimensions. We believe that our method will greatly promote the application of high-resolution microwave 3-D imaging in complex and changing scenarios with limited equipment.

Automated summary

We propose and demonstrate a high-resolution single-antenna three-dimensional microwave imaging scheme, which combines the spatial decoupling capabilities of Hadamard modulation and the broadband characteristics of optical receivers. It has been experimentally demonstrated that our scheme can achieve high-resolution 3D imaging resolution without scanning, and successfully image an unmanned aerial vehicle-shaped target. The measurement shows that the 3D image can obtain a resolution of better than 4 cm in all dimensions. This method is expected to greatly promote the application of high-resolution microwave 3D imaging in complex and changing scenarios with limited equipment.