Pulse-compression ghost imaging lidar via coherent detection

TL;DR

This paper introduces a pulse-compression ghost imaging lidar system that combines pulse compression and coherent detection to enhance remote sensing capabilities, including target imaging, velocity measurement, and improved sensitivity and range.

Contribution

It proposes a novel lidar system integrating pulse compression and coherent detection with ghost imaging, offering improved sensitivity and range without sacrificing resolution.

Findings

Able to obtain target spatial distribution, range, and velocity.

Maintains high range resolution with long pulse use.

Significantly improves detection sensitivity and range.

Abstract

Ghost imaging (GI) lidar, as a novel remote sensing technique,has been receiving increasing interest in recent years. By combining pulse-compression technique and coherent detection with GI, we propose a new lidar system called pulse-compression GI lidar. Our analytical results, which are backed up by numerical simulations, demonstrate that pulse-compression GI lidar can obtain the target's spatial intensity distribution, range and moving velocity. Compared with conventional pulsed GI lidar system, pulse-compression GI lidar, without decreasing the range resolution, is easy to obtain high single pulse energy with the use of a long pulse, and the mechanism of coherent detection can eliminate the influence of the stray light, which can dramatically improve the detection sensitivity and detection range.