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  • Multi-sensor systems / for testing multi-sensor surveillance systems

MS300

Article: 00249831

Multi-sensor systems / for testing multi-sensor surveillance systems

MS can be considered as a system that combines several subsystems: 1. Variable target projector – multi spectral system that project reference images in several spectral bands (used for testing and boresight imaging systems like thermal imagers, VIS-NIR cameras, SWIR cameras); 2. Laser detector – cards sensitive to laser light beams that can create image of laser spot (used for boresight to reference optical axis and measurement of divergence angle of LRFs/designators/pointers); 3. Laser meter – meter of radiometric / temporal parameters of pulsed lasers (used to test transmitters of LRFs / designators); 4. Power meter – of laser pointers / illuminators power; 5. Optical pulse generator – to test receivers of LRFs; 6. Boresight station – for boresight to a reference mechanical axis, 7. Electronic image acquisition system – that enables capturing video image generated by tested imagers in many different analog and digital formats, 8. Control software – for controls radiation sources and rotary wheel 9. Measurement software – for analysis of acquired data and calculation of parameters of tested multi-sensor system. Test capabilities of MS depends on version. MS system in the most expanded version can be used to measure following parameters: 1. Thermal imagers: MRTD, MTF, SiTF, NETD, FPN, non-uniformity, FOV, distortion, magnification, Response function, 3DNoise, NPSD, Bad pixels, PVF, SRF, ATF, SNR, MDTD, AutoMRTD, TOD, NER, NEI, NEFD, NEP, D* 2. VIS-NIR cameras: resolution, MTF, Sensitivity, NEI (noise equivalent illuminance), SiTF, FOV, MRC, 3D Noise, Uniformity, magnification, NPSD, Bad pixels, Distortion, SNR, Responsivity function 3. SWIR cameras: resolution, MTF, Sensitivity, NEI (noise equivalent illuminance), SiTF, FOV, MRC, 3D Noise, Uniformity, magnification, NPSD, Bad pixels, Distortion, SNR, Responsivity function 4. Laser range finders: Pulse energy, pulse peak power, PRF, pulse width, and coding, missing pulses, receiver sensitivity, Extinction Ratio, maximal operational range 5. Laser designators: Pulse energy, pulse peak power, PRF, pulse width, and coding, missing pulses 6. Laser pointers: power, uniformity, divergence angle 7. Boresight capabilities: alignment errors between • optical axis of thermal imager at several FOVs, • optical axis of VIS/SWIR camera at different magnification of zoom objective, • optical axis of thermal imager relative to optical axis of VIS-NIR/SWIR camera, • optical axis of LRF/designator and optical axis of a reference imaging system, • reference optical of laser system/imaging system and reference mechanical axis of the tested system. As can be seen the list of parameters measured by MS systems is very long. It can be said that MS in general enables measurement of all important parameters of thermal imagers, VIS-NIR cameras, SWIR cameras, laser range finders, laser designators, laser pointers, laser illuminators and all boresight errors of multi-sensor systems.

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