SIGIS 2 scanning imaging remote sensing system

Význam tématu

Remote infrared gas imaging enables non-invasive, continuous surveillance of industrial sites, environmental areas and sensitive locations. By identifying and quantifying gas plumes at long distances, operators can detect leaks, monitor emissions and respond quickly to chemical threats without direct access or on-site sampling.

Cíle a přehled studie / článku

This summary describes the SIGIS 2 scanning infrared gas imaging system. It covers the instrument’s design, passive remote sensing capabilities, automated analysis via OPUS RS software, and key applications in facility surveillance, atmospheric research, volcanology, emergency response and mobile security deployments.

Použitá metodika a instrumentace

Methodology combines Fourier transform infrared (FTIR) spectroscopy with a rotating 360° scanner and telescope optics to measure point-by-point infrared spectra across a selected field.

• FTIR spectrometer with Bruker RockSolid Michelson interferometer and cube-corner mirrors for high optical throughput and low noise.
• Azimuth-elevation scanning mirror inside a rotating head for rapid area coverage.
• Telescope with 10 mrad field of view (10×10 m at 1 km distance) to collect passive thermal radiation without external sources.
• Real-time OPUS RS software for automatic radiometric calibration, library-based identification and spectral fitting to derive column densities (ppm·m).
• Video and infrared cameras for day/night scene imaging and overlay of false-color gas distribution maps.
• Optional dual-system tomography via two SIGIS 2 units under different viewing angles to reconstruct 3D gas cloud geometry and concentration.

Hlavní výsledky a diskuse

SIGIS 2 reliably identifies compounds such as ammonia, toxic industrial chemicals (TICs) and optional chemical warfare agents (CWAs) with detection limits enabled by high spectral resolution (0.5 cm⁻¹) and rapid spectral rates (16 spectra/s). Field trials demonstrate continuous 24/7 surveillance with automatic alarm generation when target gases exceed correlation and signal thresholds. Tomographic reconstruction yields three-dimensional mapping of cloud plumes, facilitating precise leak localization and volumetric concentration estimates.

Přínosy a praktické využití metody

Passive remote gas imaging offers non-contact monitoring of large areas, eliminating the need for physical samples or reflective targets. Key benefits include:

• Early leak detection and rapid emergency response in industrial plants and chemical facilities.
• Environmental and atmospheric research applications, including volcanic gas monitoring and air quality studies.
• Integration into mobile platforms—vehicles or helicopters—for on-the-move threat assessment at public events or disaster sites.
• Networked multi-unit surveillance with centralized control via fiber-optic or local server links.

Budoucí trendy a možnosti využití

Emerging developments may include hyperspectral focal-plane array implementations for simultaneous multi-pixel spectroscopy, real-time AI-driven anomaly detection, integration with unmanned aerial systems, extended spectral ranges (mid- to far-IR) and miniaturized, battery-operated modules for rapid deployment. Cloud-based data analytics and GIS interoperability will further enhance spatial visualization and decision support.

Závěr

The SIGIS 2 system combines advanced FTIR spectroscopy, automated spectral analysis and flexible deployment options to deliver reliable, long-distance gas detection and quantification. Its versatility supports industrial safety, environmental monitoring, security operations and academic research.

Reference

No formal literature references were provided in the source document.