For remote sensing, high-resolution imaging techniques are helpful to catch
more characteristic information of the target. We extend pseudo-thermal light
ghost imaging to the area of remote imaging and propose a ghost imaging lidar
system. For the first time, we demonstrate experimentally that the real-space
image of a target at about 1.0 km range with 20 mm resolution is achieved by
ghost imaging via sparsity constraints (GISC) technique. The characters of GISC
technique compared to the existing lidar systems are also discussed.Comment: 4pages, 3figure