Target acquisition performance comparison of active continuous-wave and range-gated imaging systems at 1.6 and 2.1 μm

Joshua Follansbee, Derek Burrell, Orges Furxhi, C. Kyle Renshaw, John Lund, Ronald Driggers

Research output: Contribution to journalArticlepeer-review

Abstract

Active imaging systems can provide increased contrast-to-noise ratio (CNR) and targeting performance over passive systems in low-light and long-range applications. We use both a radiometric model and the Night Vision Integrated Performance Model to compare the performance of active continuous-wave (CW) and laser range-gated (LRG) imaging systems with laser illumination at 1.6 and 2.1 μm, corresponding to the shortwave infrared (SWIR) and extended SWIR (eSWIR) bands, respectively. The imager performance is characterized by CNR as a function of range, as well as pixels-on-target. The modeling results demonstrate increased performance in the eSWIR band over the SWIR band in the majority of cases and increased performance for LRG systems over CW systems in all cases. The in-progress design of an active imaging testbed to confirm these modeling results with field imagery is discussed.

Original languageEnglish (US)
Article number094107
JournalOptical Engineering
Volume62
Issue number9
DOIs
StatePublished - Sep 1 2023

Keywords

  • active imaging
  • extended shortwave infrared
  • range-gating
  • shortwave infrared

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Engineering

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