Sea surface target adaptive polarization detection device and method for suppressing solar flare

A detection device and detection method technology, which is applied in the field of optical sensing and optical communication, can solve the problem of less suppression technology, and achieve the effects of suppression of image artifacts, compact structure, and simple restoration method

Pending Publication Date: 2022-07-08
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the problems existing in the prior art, the present invention provides a sea surface target adaptive polarization detection device for suppressing solar flare and its detection method, which solves the problem that the prior art uses polarization to suppress sea surface flare. less problem

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  • Sea surface target adaptive polarization detection device and method for suppressing solar flare
  • Sea surface target adaptive polarization detection device and method for suppressing solar flare
  • Sea surface target adaptive polarization detection device and method for suppressing solar flare

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[0034] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0035] like figure 1 As shown, a sea surface target adaptive polarization detection device for suppressing solar flare, the equipment includes: a polarization camera 1, a computer 2, a stepping motor 3, a polarizer 4, and a digital domain TDI-CMOS camera 5; The sea surface is not static, but fluctuates, and under the radiation of the sun, many flares that appear and disappear quickly form. Since the polarization characteristics of the sunlight 8 reflected by the sea surface have changed, it can be concluded from the Fresnel formula that most of the light reflected by the sea surface target 7 is partially polarized light 6 . Therefore, the sea surface flare can be effectively suppressed by suppressing the polarized light of the sea surface. The polarization camera 1 detects the partially polarized light 6 reflected by the sea surface target 7 ,...

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Abstract

The invention discloses a sea surface target adaptive polarization detection device and method for suppressing solar flare, relates to the technical field of optical communication and the technical field of optical sensing, and solves the problem of relatively few technologies for suppressing sea surface flare by using a polarization mode. The device comprises a polarization camera, a computer, a stepping motor, a polaroid and a digital domain TDI-CMOS camera. The polarization camera detects part of polarized light reflected by a sea surface target, an original image with the angle and intensity of the part of polarized light is sent to the computer, the main polarization direction of reflected light of the sea surface target is obtained through calculation of the computer, and the computer controls the stepping motor. Enabling a polaroid installed on the digital domain TDI-CMOS camera to be perpendicular to the main polarization direction of reflected light of the sea surface target, collecting a polarization image of the sea surface target by the digital domain TDI-CMOS camera, and processing the image. According to the invention, the influence of the solar flare on the image can be obviously weakened; the structure is compact and use is simple; the recovery method is simple; processing is easy, and industrialization is facilitated.

Description

technical field [0001] The invention relates to the technical fields of optical communication and optical sensing, in particular to a sea surface target adaptive polarization detection device and a method for suppressing solar flare. Background technique [0002] Due to its integral imaging characteristics, digital domain TDI-CMOS cameras can obtain images with high signal-to-noise ratio in low-light environments, and also have the advantages of high sensitivity, so they are widely used in high-resolution, high-precision imaging. in the space camera. But at the same time, it will be more sensitive to the interference caused by various environmental factors. Moreover, the reflectivity of the sea surface is very low, so the existence of solar flare brings a lot of flare noise to the sensor, which seriously affects the recognition accuracy and performance of the detector, making it impossible to effectively detect and accurately detect marine targets. Obtain ocean remote sens...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/21G01N21/01
CPCG01N21/21G01N21/01Y02A90/10
Inventor 曲宏松朱鹤骞陶淑苹郑亮亮张贵祥
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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