Channel radiation quantity reconstructing method of high temperature target

A technology of radiance and channel, which is applied in the field of infrared remote sensing image radiance simulation, can solve the problem that it is difficult to obtain remote sensing image data of atmospheric absorption channel

Active Publication Date: 2014-11-19
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0002] The remote sensing satellite channel setting usually chooses the atmospheric window channel, and the high-temperature target has strong radiation characteristics in the atmospheric absorption channel. The remote sensing identification accuracy has important application value, but it is difficult to obtain the remote sensing image data of the atmospheric absorption channel

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  • Channel radiation quantity reconstructing method of high temperature target
  • Channel radiation quantity reconstructing method of high temperature target
  • Channel radiation quantity reconstructing method of high temperature target

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Embodiment Construction

[0058] According to the method proposed by the present invention, the channel conversion is performed on the radiation characteristics of Eyjafjallah volcano in Iceland specifically for the FY-3 VIRR data. Firstly, the preprocessing of radiation correction and geometric correction preprocessing is performed on the channel data of FY-3 VIRR 3.55~3.93μm (center wavelength 3.9μm), and the identification of crater and volcanic ash is completed, and the radiance image of crater and volcanic ash is obtained, based on the sub-image The brightness temperature image of the high-temperature volcanic lava is obtained by inversion with the meta-Newton iterative method. On this basis, the channel conversion is performed to obtain the radiance image of the high-temperature target in the target channel.

[0059] The details are as follows:

[0060] 1. High temperature target recognition

[0061] The third channel (3.55~3.93μm) of FY-3 / VIRR image is sensitive to high temperature. The pixel ...

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Abstract

The invention discloses a channel radiation quantity reconstructing method of a high temperature target. The channel radiation quantity reconstructing method is applied to novel high temperature target radiation feature simulation of an infrared image of a remote sensor. The method comprises the steps of first selecting a related channel, establishing a simplified model converting the radiation quantity of an existing channel to the radiation quantity of a target channel, namely simplifying calculation of a radiation quantity conversion model into calculation of a transmittance converting model and a background radiation quantity conversion relation model of the existing channel and the target channel; then conducting simulated analysis impact factors influencing transmittance and background radiation quantity, respectively establishing a relation model of the transmittance and the background radiation quantities of the two channels under the conditions of the impact factors in sequence, and achieving reconstruction of the radiation quantity of the infrared image of the target channel. The channel radiation quantity reconstructing method of the high temperature target has the advantage that radiation quantity conversion modeling of the two channels is simplified into the transmittance relation modeling and background radiation quantity relation modeling of the two channels by establishing the simplified radiation quantity conversion model of the high temperature target.

Description

technical field [0001] The invention relates to the field of infrared remote sensing image radiation simulation, in particular to a method for generating unknown channel radiance data based on existing remote sensing satellite channel radiance data simulation, which is suitable for pre-study of new remote sensor imaging quality simulation. Background technique [0002] The remote sensing satellite channel setting usually chooses the atmospheric window channel, and the high-temperature target has strong radiation characteristics in the atmospheric absorption channel. The remote sensing identification accuracy has important application value, but it is currently difficult to obtain remote sensing image data of the atmospheric absorption channel. Different from the traditional remote sensing image simulation method, the present invention will provide a method for generating the radiation characteristic image of the high-temperature target in the atmospheric absorption channel b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 巩彩兰胡勇孟鹏江珊刘丰轶徐菲菲
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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