Detection of a poorly resolved airplane using SWIR polarization imaging

An intrinsic coincident full-Stokes polarimeter is demonstrated by using strain-aligned polymer-based organic photovoltaics (OPVs) that can preferentially absorb certain polarized states of incident light. The photovoltaic-based polarimeter is capable of measuring four Stokes parameters by cascading four semitransparent OPVs in series along the same optical axis. This in-line polarimeter concept potentially ensures high temporal and spatial resolution with higher radiometric efficiency as compared to the existing polarimeter architecture. Two wave plates were incorporated into the system to modulate the S₃ Stokes parameter so as to reduce the condition number of the measurement matrix and maximize the measured signal-to-noise ratio. Radiometric calibration was carried out to determine the measurement matrix. The polarimeter presented in this paper demonstrated an average RMS error of 0.84% for reconstructed Stokes vectors after normalized to S₀. A theoretical analysis of the minimum condition number of the four-cell OPV design showed that for individually optimized OPV cells, a condition number of 2.4 is possible.

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Detection of a poorly resolved airplane using SWIR polarization imaging

Cited by 4 publications

References 13 publications

Shortwave infrared polarization characteristics simulation of solid rocket plume with self-emission and external incident radiation

Shortwave infrared polarization characteristics simulation of solid rocket plume with self-emission and external incident radiation

Polarization image fusion algorithm based on global information correction

Intrinsic coincident full-Stokes polarimeter using stacked organic photovoltaics

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