STANAG 4347 Test for Definition of Nominal Static Range Performance for Thermal Imaging Systems

Defense Tests

STANAG 4347 Test for Definition of Nominal Static Range Performance for Thermal Imaging Systems

EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of STANAG 4347 testing. This standard provides standardized technical criteria for the definition of nominal static range performance for thermal imaging systems to be used for ground targets viewed from the surface or from slightly elevated positions to compare the performance of different systems.

STANAG 4347 Test for Definition of Nominal Static Range Performance for Thermal Imaging Systems

In areas such as military systems, surveillance systems or industrial process control, there is more and more a need to work in conditions of limited visibility or even in complete darkness. In such cases, vision systems can benefit by using thermal vision cameras. An array of infrared radiation detectors is used in thermal imaging.

In military and surveillance systems, there is a need to detect potential intruders in various conditions, such as in complete darkness or the presence of fog[6]. Modern surveillance and military systems use thermosight technology to detect and observe objects in the environment. Thermovision cameras must have high sensitivity to achieve a high detection probability. Cooled photon detectors are used in areas where sensitivity is critical. Besides the desirable high sensitivity of such sensors, such detectors have several disadvantages such as inhomogeneity and high number of defective pixels. There is a need to design a special image processing system to compensate for these disadvantages.

These systems are designed to perform so-called irregularity correction and faulty pixel replacement algorithms, but to do this requires specifying a specific set of correction coefficients specific to the individual detector array installed in the camera. A special calibration stand and calibration procedure are designed to obtain a set of coefficients for the camera.

An infrared camera is a camera that detects invisible radiation produced by every physical body. According to Planck's law, the warmer the body, the more radiation is produced by the body, so the infrared camera can detect objects based on their thermal contrast with the background. Taking advantage of the temperature dependence of the amount of energy emitted, there is the possibility of measuring the surface temperature of the observed object.

Cameras that take advantage of this dependency are called thermal cameras. In military and security systems, information about the absolute temperature of the observed object is not useful and is often skipped. There are many models of infrared cameras, but according to the detector generally used, two general types can be distinguished: cooled and uncooled. Uncooled cameras are made of arrays of microbolometric detectors. The microbolometer absorbs the radiation on its surface and converts the incoming radiation into a temperature change. The temperature of the macrobolometer is then converted into a voltage signal by the special reading circuit.

EUROLAB assists manufacturers with STANAG 4347 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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