Patent ID: 9664781
Date: 2017-05-30
CPC Classifications: G01S

Claim:
1. A method, comprising the steps of: illuminating an extended target with a laser source, wherein the extended target is partially obscured by an obscuration; sensing a reflected wavefront from the extended target with a conjugator, wherein the reflected wavefront is generated by laser energy of the laser source; determining a hologram based on the reflected wavefront; generating a directed laser beam to the extended target with the hologram, wherein the directed laser beam generates a plurality of time-reversed wavefronts; repeating the steps of sensing the reflected wavefront from the extended target with the conjugator and generating the directed laser beam to the extended target with an updated hologram one or more times to generate a more concentrated illumination on the extended target with respect to the obscuration, wherein the updated hologram improves a penetrating efficiency of the directed laser beam through the obscuration; using a time-gating switch to select a particular range of the plurality of time-reversed wavefronts for the extended target, wherein the particular range of the plurality of time-reversed wavefronts includes only light returns of the more concentrated illumination that are reflected from a target distance range beyond the obscuration; receiving an enhanced return from the extended target with a receiver, wherein the enhanced return is generated by the particular range of the plurality of time-reversed wavefronts; and generating a three-dimensional (3D) image of the extended target based on the enhanced return.