The Research of Long-Optical-Path Visible Laser Polarization Characteristics in Smoke Environment

The concentration of smoke in an environment can cause obvious interference to visible light intensity imaging, and it is a non-negligible factor the polarized imaging ground-based targets. Smoke particles severe scattering photon intensity, resulting polarization. In this case, low-visibility targets be effectively identified by detecting polarization dimension However, transmission unclear, theoretical simulation lacks experimental reliability verification. To study problem, constructs model simulates analyzes at 450, 532, 671 nm under different densities. optical thickness determined establish reliable connection between external field long path test verify light. Results show that method has 60% confidence model. With increase thickness, degree (DOP) three wavelengths band decreases, DOP each decreases. No difference found DOPs circularly 450 linearly 532 1–5% higher than light, 1–10% outdoor test, nm, 2–15% test. Therefore, shorter wavelength band, DOP. wavelength, characteristics are gradually better those