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Two Axis Electro Optical Infrared Sensor

  • Monday, 16 December 2024
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Two Axis Electro Optical Infrared Sensor

IR sensors are a key component of many airborne and space platforms, providing high-resolution imaging for day and night operations. A two axis electro optical infrared sensor combines an infrared thermal imaging system with stabilization on at least two distinct rotational axes, enhancing image clarity and enabling precise tracking and targeting of objects.

A typical EOIR sensor uses a lens to focus the incoming electromagnetic radiation on the detector. Its aperture varies depending on the system’s wavelength range. Moreover, a spectral filter is used to enhance the target to background contrast and remove unwanted signal such as reflected solar radiation and atmospheric gases.

The detection range of an EO/IR system depends on the size and type of the target and its contrast to its environment. Larger targets have higher thermal contrast and can be detected from greater distances than smaller ones. The nature of the target also plays an important role: a visually distinctive target can be distinguished from its surroundings, even in low-light conditions. Other influencing factors include environmental conditions, such as weather and atmospheric conditions, which can reduce the detection range of an EO/IR system by masking its light source with ambient lighting.

Most EO/IR systems operate in the mid-wave infrared (MWIR) and long-wave infrared (LWIR) regions of the electromagnetic spectrum. The MWIR and LWIR bands are used because they offer more thermal contrast than the visible spectrum and because the amount of emitted radiation depends less on an object’s temperature, making it easier to differentiate cold targets from hot ones.

In addition to enhancing the performance of EO/IR systems, two axis electro optical infrared sensors are also used to control gyro stabilizers on military aircraft and UAVs to enable them to fly and land with precision. They are also used to perform aiming, target tracking, and surveillance functions on weapons and UAVs. Moreover, IR sensors are being increasingly used in marine applications to help ships navigate through icebergs and ice formations in the Arctic region.

Several commercial and military EO/IR software tools are available to design and model EO/IR sensors to predict their performance in various environments. These tools, which include Ansys Lumerical and Ansys Zemax OpticStudio, enable engineers to simulate how a sensor will function in different settings to ensure that it meets the requirements of its intended use. The data generated by these tools can then be used to test and improve the design of an EO/IR system before it is deployed in the field. In this way, these tools play an important role in ensuring that the system will meet the expectations of its users and customers. This is critical to the success of military and aerospace projects.

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