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A Search Method for Space Orbit Family of Binary Star System Based on Grid Search

A search method and grid search technology, applied in the aerospace field, can solve problems such as inapplicability, and achieve the effect of many orbit families and high search efficiency

Active Publication Date: 2019-03-05
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

This method can get multi-turn periodic orbits, but it is only limited to planar orbits, and it is not applicable to the space orbit family

Method used

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  • A Search Method for Space Orbit Family of Binary Star System Based on Grid Search
  • A Search Method for Space Orbit Family of Binary Star System Based on Grid Search
  • A Search Method for Space Orbit Family of Binary Star System Based on Grid Search

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Embodiment 1

[0051] A search method for a binary star system space orbit family based on a grid search disclosed in this embodiment includes the following steps, the specific steps are as follows: figure 1 Shown:

[0052] Step 1. Select the target binary star as the 809Lundia binary star system, and establish a dynamic model in the barycenter rotating coordinate system, such as figure 2 shown.

[0053]

[0054] Where ρ represents the position vector from the detector to the center of mass, ω is the rotational angular velocity of the system, and ρ 1 and ρ 2 is the position vector from the detector to the primary and secondary stars of the binary star. u 1,2 represents the gravitational potential energy of the binary star,

[0055]

[0056]

[0057]

[0058] Where α, β, γ are the lengths of the three principal axes of the star.

[0059]

[0060] In the Lundia binary star system, the three-axis lengths of the main star are 3.9km, 3.3km, and 3.2km; the three-axis lengths ...

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Abstract

The invention discloses a dual-satellite system space track family searching method based on grid search, which relates to a dual-satellite system space track family searching method and belongs to the airspace technology field. The method comprises the following steps: conducting grid dividing to the initial state of a dual-satellite system space track for convenient search; through the comparison of the difference between the terminal state and the ideal state corresponding to the initial parameters and the relative position relation, obtaining the alternative initial state of an existing periodic track; through the use of the differential correction algorithm, obtaining the accurate initial state of the periodic track; and finally, according to the track energy, the track periods and the position distribution, obtaining different space track families. The invention can realize the search for the dual-satellite system space and the multi-orbit track, and with the method, more track families can be searched at higher efficiency so that track families whose initial parameters are sensitive can be conveniently obtained.

Description

technical field [0001] The invention relates to a search method for a space orbit family of a binary star system, in particular to a grid search-based search method for a three-dimensional space orbit of a binary star system, which belongs to the field of aerospace technology and is suitable for detectors to detect orbits of a binary star system design. Background technique [0002] The double asteroid system is an important part of the asteroid community, accounting for about 16% of the number of near-Earth asteroids and main belt asteroids. Exploration missions to binary star systems have the opportunity to detect ongoing evolutionary processes and significant surface physical interactions. At the same time, due to the YORP effect, the detector can obtain fresh inner matter of the star without complicated operations. In addition, due to the characteristics of the binary star system itself, the size, mass and orbital axis orientation of the system can be estimated by grou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 乔栋李翔宇孙超杨雅迪杜燕茹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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