Design of a silicon readout integrated circuit (ROIC) for LWIR HgCdTe Focal Plane is presented. ROIC incorporates time delay integration (TDI) functionality over seven elements with a supersampling rate of three, increasing SNR and the spatial resolution. Novelty of this topology is inside TDI stage; integration of charges in TDI stage implemented in current domain by using switched current str...

Long-wave infrared (LWIR) hyperspectral imaging sensors are widely used for the detection and identification of released chemical agents in many civilian and military applications. Current hyperspectral system capabilities are limited by variation in the background clutter as opposed to the physics of photon detection. Hence, the development of statistical models for background clutter and opti...

The readout of detector arrays requires the monolithic or hybrid integration of a integrate circuit multiplexer with the detector array. In most LWIR and VLWIR applications, a hybrid approach is used. For example, the detector array may be built from HgCdTe and the readout integrated circuit may be silicon CMOS [1]. The two integrated circuits are mated through a bump-bonding process in which e...

The advantages of Hyperspectral Imaging (HSI) over conventional remote sensing imaging has been well recognized (Schowengerdt, 1983). HSI provides the user with spatial and spectral information about scene objects and facilitates improved detection and identification over panchromatic and multispectral imagery. The predecessors of present day HSI systems were the broad band spaceborne multi-spe...

Wideband hyperspectral imaging (WHSI) systems simultaneously collect spectral and spatial imagery across a broad spectrum that includes the visible/near infrared (VNIR), short-wave infrared (SWIR), mid-wave infrared (MWIR), and long-wave infrared (LWIR) regimes. These passive optical systems capture reflected sunlight and thermal emissions from targets enabling the characterization of surface m...

When studying paintings with active infrared thermography (IRT), minimizing the temperature fluctuations and thermal shock during a measurement becomes important. Under these conditions, it might be beneficial to use lock-in instead of conventionally used pulse (PT). This study compared observations made (LIT) phase (PPT) halogen light excitation. Three distinctly different were examined. The L...

Abstract We propose a flat multilayered structure fabricated from gradient epsilon-near-zero (ENZ) materials (SiO 2 /Si 3 N 4 /Al O /AlN/TiO /α-Ta 5 ) coated on aluminium (Al) that enables broadband directional control of infrared absorption and adopt the Particle Swarm Optimization (PSO) method to optimize its structural parameters. The results demonstrate absorbers can exhibit high (> 0.6)...

Interferometric hyperspectral imagers using infrared focal plane array (FPA) sensors have received increasing interest within the field of security and defence. Setups are commonly based upon either the Sagnac or the Michelson configuration, where the former is usually preferred due to its mechanical robustness. However, the Michelson configuration shows advantages in larger FOV due to better v...