Experiment of inverse synthetic aperture LADAR on real target

In this manuscript, an Inverse Synthetic Aperture LADAR (ISAL) system at 1.55 μm wavelength is introduced. We have recently completed an imaging experiment on real target 1.1 km away from laser radar by using the system and obtained a series of images of the target, an aircraft model, with cm-level range resolution and mm-level cross-range resolution, which is due to the large bandwidth transmitting signal and the μm-level wavelength of laser. The results of experiment prove that the inverse synthetic aperture LADAR system has the ability to imaging a real target with high-resolution from a long distance, which transcends the diffraction limit for the effective aperture size of the receive telescope.