A Correction Method for Thermospheric Atmospheric Density

A technology of atmospheric density and locality, applied in the field of space physics, can solve problems affecting the accuracy of orbit forecasting, achieve the effect of improving orbit determination and forecast accuracy, and improving accuracy

Inactive Publication Date: 2017-01-18
BEIJING AEROSPACE CONTROL CENT
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Problems solved by technology

Since my country launched the major project of manned spaceflight in 1992, the atmospheric density model published by foreign countries for decades has been used in orbit determination. The accuracy of the model has at least 15% to 30% error in the calm period of the space environment. The period error even exceeds 100%, seriously affecting the orbit forecast accuracy

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  • A Correction Method for Thermospheric Atmospheric Density
  • A Correction Method for Thermospheric Atmospheric Density
  • A Correction Method for Thermospheric Atmospheric Density

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Embodiment Construction

[0024] The present invention is further described below with reference to the accompanying drawings and an example during a manned space flight mission.

[0025] At present, in the fields of aerospace measurement and control, communication and navigation, and related technologies, it involves using the thermospheric atmospheric density model to calculate the atmospheric density when determining the orbit of the spacecraft. In manned spaceflight missions, the thermospheric atmospheric density models used include three types: Jacchia series, MSIS series, and DTM. like Figure 4 As shown, the method of the present invention is used to correct the density of the thermosphere atmosphere as follows:

[0026] Step 1. Select the model for calculating the atmospheric density of the thermosphere

[0027] The orbit calculation accuracy of each thermosphere atmosphere density model is calculated, and the thermosphere atmosphere density model with the highest orbit calculation accuracy i...

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Abstract

The invention belongs to the technical field of space physics and discloses a thermosphere atmospheric density correction method. Due to the fact that a thermosphere atmospheric density calculating mode is selected, a kernel regressing method is adopted for calculating thermosphere atmospheric density errors calculated by the thermosphere atmospheric density mode, and therefore the thermosphere atmospheric density is corrected finally. According to the thermosphere atmospheric density correction method, the thermosphere atmospheric density precision is improved, and therefore the orbit determining precision and the forecasting precision of low orbit spacecrafts represented by manned spacecrafts are improved.

Description

technical field [0001] The invention belongs to the technical field of space physics, and in particular relates to a thermospheric atmosphere density correction method. Background technique [0002] For low-orbiting spacecraft (LEO) represented by manned spacecraft, the orbit prediction accuracy is mainly affected by atmospheric resistance, and the error of the thermospheric atmospheric density model is the primary error source affecting the orbit prediction accuracy. Since my country launched the major project of manned spaceflight in 1992, the atmospheric density model that has been published in foreign countries for decades has been used in the determination of orbits. The model accuracy has at least 15% to 30% error in the quiet period of the space environment. The period error even exceeds 100%, which seriously affects the accuracy of orbit prediction. Therefore, improving the calculation accuracy of the atmospheric density in the thermosphere has become a key scientifi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 周率李嘉巍李黎黄聪曹建峰张效信王劲松程国胜李勰李翠兰陈光明李星祥
Owner BEIJING AEROSPACE CONTROL CENT
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