Macro Fourier Ptychography and 3D Stereo Imaging Synchronous Detection System

In the field of remote sensing detection, the number of space debris and defunct satellites is increasing year by year. Consequently, the detection and identification of small space debris have become a critical requirement in current detection efforts. Investigating the detailed shape characteristics and three-dimensional information of targets is essential for assessing the potential threats such objects may pose to operational satellites or space stations. Debris, to some extent, has undergone prolonged exposure to the space environment, and analyzing it for damage detection can yield authentic results on material degradation in space. The detection of small space targets demands high resolution, yet spatial resolution is often constrained by the aperture size of optical systems. Large-aperture lenses incur high costs across various stages, including manufacturing, launch, in-orbit operation, and maintenance. Furthermore, three-dimensional space detection typically employs binocular imaging, which complicates cost control in terms of system deployment and operation. A macroscopic Fourier ptychographic imaging and three-dimensional stereoscopic imaging synchronous detection system is proposed. Building upon existing satellite platforms, this system achieves high-resolution and three-dimensional imaging of small targets through precise displacement control and an integrated adjustment mechanism using compact cameras. The system can be configured with dual in-orbit cameras, leveraging active laser illumination and speckle patterns to capture a series of low-resolution images along a pre-designed motion trajectory. By applying the Fourier ptychographic reconstruction algorithm, high-resolution details of the target are restored, enabling fine detection of spacecraft surface damage and captured debris.