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A method for correcting the low-level cut height of infrared occultation sensors based on non-absorbing spectroscopy

A star sensor and non-absorbing technology, which is applied in the field of low-level cutting height of infrared occultation sensors based on non-absorbing spectrum correction, can solve the problem of inaccurate first-level cutting height, and achieve the effect of saving CPU time and simple operation

Active Publication Date: 2022-06-03
NANTONG UNIVERSITY +1
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a simpler, faster and more accurate method based on the high-resolution infrared detection instrument of Gaofen No. Method of Absorption Spectrum Correction for Low Layer Cut Height of Infrared Occultation Sensor

Method used

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  • A method for correcting the low-level cut height of infrared occultation sensors based on non-absorbing spectroscopy
  • A method for correcting the low-level cut height of infrared occultation sensors based on non-absorbing spectroscopy
  • A method for correcting the low-level cut height of infrared occultation sensors based on non-absorbing spectroscopy

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Abstract

The invention provides a method for correcting the low-level cut height of an infrared occultation sensor based on a non-absorbing spectrum. The detection spectral data above the height; Step 2: Analyze the detection spectral data to determine the low-level cut height range to be corrected; Step 3: Through the HITRAN spectral absorption library, analyze the effective observation spectrum of GF-AIUS (750-4100cm ‑1 ) within the position of the completely non-absorbing band; step 4: high-pass filter the spectrum of the full effective band, extract the spectral data of the non-absorbing band within the corresponding cut height range, and calculate the scaling factor; step 5: according to the scaling factor, Correct the spectrum on the lower cut height; Step 6: Carry out atmospheric correction on the lower cut height. The beneficial effects of the present invention are: the rapid height-cut correction method of the present invention is simpler, faster and more accurate.

Description

A method for correcting the low-level cut height of infrared occultation sensors based on non-absorbing spectroscopy technical field The present invention relates to infrared occultation sensor detection cut height correction technical field, particularly relate to a kind of based on non-absorbing light A method for spectrally correcting the low-level cut height of an infrared occultation sensor. Background technique [0002] High accuracy plays a crucial role in satellite occultation observation modes. Tangent Height) refers to the vertical distance from the tangent point between the observation point and the atmosphere to the earth's surface. Retrieving the composition of gases in the atmosphere In the process, the height of the cut height affects the accuracy of the atmospheric composition inversion. Very high resolution infrared for atmospheric environment of Gaofen-5 The detector (GF5‑AIUS) makes observations when it detects the sun. At sunrise, due to atmosph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3504
CPCG01N21/3504
Inventor 王红梅张玉贵鲁之君
Owner NANTONG UNIVERSITY
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