Abstract
The polarization degree of objects in the marine background are affected by infrared radiation from sea surface. Taking into account the radiation coupling effect (RCE), a degree of linear polarization (DoLP) model is deduced. The DoLP of painted aluminum plates at different observation angles are simulated. The simulation results show the trend of the DoLP of the object decreases first and then increases as the observation angle θO, with the minimum value at θO=53∘. Nevertheless, we get a monotonically increasing trend and the minimum value is at θO=0∘ without considering RCE. The experimental results accord closely with those of the simulation with RCE. This conclusion is useful for the polarization detection and identification of infrared objects in the marine background.
Highlights
Compared with traditional infrared technology, polarization detection can obtain more information, such as the degree of linear polarization (DoLP) and the angle of polarization.Infrared polarization detection technology shows a promising application prospect in the field of remote sensing [1,2,3], and object detection and identification [4,5,6,7]
DoLP of the object according to the proposed model shown in Figure 3, and the object temperature is set at 30 ◦ C in the simulation
In order to study the influence of radiation coupling effect (RCE) on the DoLP, we calculate the Rs, Rp a of 12 object of the object according to the proposed model shown in Figure 3, and7 the ture is set at 30 °C in the simulation
Summary
Compared with traditional infrared technology, polarization detection can obtain more information, such as the degree of linear polarization (DoLP) and the angle of polarization. Infrared polarization detection technology shows a promising application prospect in the field of remote sensing [1,2,3], and object detection and identification [4,5,6,7]. In the long-wave infrared (LWIR) band, the object polarization characteristics are strongly influenced by environmental factors [8,9]. For objects in the marine background, the radiation from the sea surface and surroundings can be reflected into the detector by the object’s surface, coupling with the object’s radiation. The radiation coupling effect (RCE) cannot be ignored for shore-based or low-altitude infrared polarization detection and identification in a marine background
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