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Solar occultation measurement method of inversion near space atmosphere density based on X-rays

A technology of atmospheric density and close to space, applied in the field of space detection, to achieve the effect of large detection height range, low technical complexity and high measurement accuracy

Active Publication Date: 2017-03-22
NAT SPACE SCI CENT CAS
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Problems solved by technology

At present, there is still a lack of measurement methods or detection technologies for the global atmospheric density in the 50-200km altitude airspace in the world

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  • Solar occultation measurement method of inversion near space atmosphere density based on X-rays
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  • Solar occultation measurement method of inversion near space atmosphere density based on X-rays

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Embodiment Construction

[0037] The present invention will be further described now in conjunction with accompanying drawing.

[0038] The near space referred to in the present invention refers to the airspace 50-200km away from the sea level of the earth. The method of the invention is to realize the measurement of the atmospheric density in the adjacent space.

[0039] figure 1 Schematic diagram of satellite observation geometry for inversion of atmospheric density for X-ray occultation observations. Under normal circumstances, the orbital altitude of the satellite is higher than the top of the earth's atmosphere, and the on-board X-ray detector receives the X-ray radiation from the sun. The altitude of the satellite's line of sight (the connection between the satellite and the sun) is called the tangent point altitude Z. When the height of the tangent point is higher than the height of the top of the atmosphere, the solar X-ray radiation received by the satellite has not been attenuated by the a...

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Abstract

The invention relates to a solar occultation measurement method of inversion near space atmosphere density based on X-rays. The method is characterized by simultaneously measuring unattenuated solar X-ray intensity and attenuated X-ray intensity in a solar occultation path through the X-rays so as to fit the atmosphere density in a height range of 50-200km. The method has the advantages of large detection height range, low technical complexity, easy implementation and high measurement accuracy; meanwhile, the method is capable of monitoring the response of the near space atmosphere density change to the solar activity in real time; the establishment of a three-dimensional tomographic dynamic model of the near space atmosphere density is facilitated; the requirements on atmosphere parameters of development, verification and control of a near space aircraft can be met.

Description

technical field [0001] The invention relates to the field of space detection, in particular to a method for retrieving atmospheric density in adjacent space based on X-ray occultation observation. Background technique [0002] Detecting the atmospheric density and its changing characteristics at near-space altitudes (50-200km) is of great significance to the design and control of near-space vehicles. At present, there is still a lack of measurement methods or detection technologies for the global atmospheric density in the 50-200km altitude airspace in the world. Contents of the invention [0003] The purpose of the present invention is to overcome the defect that the prior art lacks the method for measuring the global atmospheric density in the 50-200km altitude airspace, thereby providing a method for measuring the atmospheric density that is easy to implement and has high measurement accuracy. [0004] In order to achieve the above object, the present invention provide...

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Application Information

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IPC IPC(8): G01N9/24
CPCG01N9/24
Inventor 李保权李海涛桑鹏高露露
Owner NAT SPACE SCI CENT CAS
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