- Conference date: 19–24 August 2008
- Location: Calgary (Canada)
We evaluate the signal‐to‐noise ratio (SNR) dependence of LADAR spatial resolution, and the improvement afforded by squeezed‐vacuum injection at the receiver. We define spatial resolution as the ability to distinguish two point targets from a single point target. For speckle returns and a soft‐aperture homodyne receiver, the resolution scales as at high SNR, and exhibits a threshold SNR below which targets are unresolvable. Injecting a 15 dB squeezed vacuum improves the resolution by a factor of about 2 at high SNR, and provides approximately 3.5 dB of threshold extension, which permits some classically‐unresolvable targets to become distinguishable.
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