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Method for forward simulation of occultation

A satellite and constellation technology, applied in the field of forward analog occultation, can solve the problems of lack of determination algorithm for occultation data download time, insufficient accuracy of occultation event positioning algorithm, etc.

Active Publication Date: 2014-06-11
AEROSPACE DONGFANGHONG DEV LTD
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Problems solved by technology

[0004] The purpose of the present invention is to solve technical problems such as lack of constellation configuration modeling in the existing forward analog occultation method, lack of accuracy of occultation event positioning algorithm, lack of occultation data download time determination algorithm, etc., to provide a A Forward Simulated Occultation Method Applicable to GNSS Earth Atmospheric Occultation Detection Constellation Design and Analysis Application

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  • Method for forward simulation of occultation
  • Method for forward simulation of occultation
  • Method for forward simulation of occultation

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Embodiment 1

[0039] Example 1, such as figure 1 As shown, the implementation steps of the forward simulated occultation method in this embodiment are as follows:

[0040] 1. Establish a typical constellation configuration model, take the reference satellite orbit parameters and constellation configuration parameters as input, consider the perturbation effects of the earth's non-spherical gravity, atmospheric drag, three-body gravity, solar light pressure, etc., and use satellite orbit dynamics to generate The orbital parameters of each satellite in the constellation at the same time. At present, the typical constellation configuration model is the Walker constellation, including the Rose constellation, the Delta constellation, etc., and the composite Walker constellation.

[0041] 2. Using spherical atmospheric parameters, the atmospheric refractive index is diffused from the surface to the top of the ionosphere according to the height of 100m, and an onion-shaped atmospheric model is gen...

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Abstract

The invention provides a method for forward simulation of occultation. The method is applicable to the GNSS earth atmosphere occultation exploration constellation design and analysis application. According to the method, satellite orbit parameters serve as design input, constellation construction parameters are supplemented to serve as design input, and constellation design and analysis application are facilitated; influence of atmospheric refraction is taken into comprehensive consideration in the process of occultation event judgment and positioning, and occultation measuring point positioning accuracy is improved; ground data transmission station modeling is added, and downloading timeliness of occultation exploration data can be supplemented and analyzed.

Description

technical field [0001] The invention relates to the field of occultation detection, in particular to a forward simulated occultation method in the process of simulated occultation detection. Background technique [0002] The global navigation satellite system (Global Navigation Satellite System, GNSS) occultation atmospheric detection is a new type of atmospheric detection technology that has emerged with the establishment and improvement of GNSS in various countries. Its space-based occultation atmospheric detection method gets rid of the constraints of ground conditions, and achieves long-term stable high vertical resolution, global coverage, all-weather, near real-time / real-time atmospheric detection. It is currently the best way to implement global climate monitoring. The development of space-based occultation atmospheric detection is characterized by low development cost and many on-orbit sounders. [0003] In order to obtain as much long-term stable occultation detec...

Claims

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Application Information

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IPC IPC(8): G01W1/08
Inventor 王珏瑶魏世隆薛力军何民王涛
Owner AEROSPACE DONGFANGHONG DEV LTD
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