Compressive Sensing Flash LADAR
Capability Description: Compact IR 3D range imaging sensor employing compressive sensing (CS) for deployment on small ground and air robotic platforms.
- Flash illumination with an 808 nm modulated VCSEL that is spatially encoded by a digital micromirror device with a Walsh Hadamard measurement bases,
- An APD receiver that detects the dot product between Walsh Hadamard masks and diffusely reflected laser light from the scene,
- A phase recovery module to extract the (compressed) range-depend phase of the received signal, and
- A CS reconstruction module to build 3D range images from the compressed phase measurements at video frame rate.
Benefits: Significantly higher point cloud density than commercial scanning LADARs enabling higher fidelity obstacle detection at a comparable form factor and cost.