NSGAII-based optimization method for super-width imaging satellite formation configuration
A technology of imaging satellites and optimization methods, applied in the direction of non-electric variable control, instruments, control/regulation systems, etc., can solve the problems that spacecraft formations cannot meet fuel consumption at the same time, and complete observation tasks effectively
Active Publication Date: 2019-08-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned background technology, and provide an optimization method based on the formation configuration of NSGA II ultra-wide imaging satellites, considering the maintenance of the formation configuration under the given single satellite observation width and side swing angle. Fuel consumption and the stable factors of the earth observation width realize the optimal design of the ultra-wide imaging of the spacecraft formation configuration along the normal direction of the orbit, and solve the problem that the existing spacecraft formation cannot satisfy the minimum fuel consumption and effectively complete the observation task at the same time Technical issues with these two requirements
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[0064] Given that the formation observation width requirement is 410km, the reference orbit is a circular orbit, the orbit height is 630km, the ground imaging width of a single satellite is 90km, and the distance between observation points along the normal direction is 80km, to refer to the sub-satellite point The position is the origin O, and the coordinates of the observation points perpendicular to the direction of motion are [-160, -80, 0, 80, 160]. The Pareto optimal solution set of this problem is obtained by the super-wide imaging satellite formation configuration design method based on NSGAII, and the appropriate relative orbital elements of the solution-constructed formation are selected to realize the optimal design of the formation configuration.
[0065] The initial parameters required for the simulation are shown in Table 1. Among them, S is the population size, which determines the optimization effect of the algorithm. Generally, the larger the better, but it will...
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The invention discloses an NSGAII-based optimization method for super-width imaging satellite formation configuration, which relates to super-width imaging satellite formation design, and belongs to the technical field of control and regulation. The NSGAII-based optimization method comprises the steps of: firstly, utilizing a relative eccentricity / inclination vector method for modeling relative motions of formation spacecrafts; secondly, considering an influence of the Earth J2 perturbation on relative orbital elements of formation, and deducing fuel consumption required to compensate for theperturbation influence; thirdly, planning a formation satellite observation task sequence through carrying out discretization on the formation satellite observation process, and further constructing an objective function for evaluating the super-width imaging effect; and finally, acquiring the satellite formation configuration considering fuel consumption and the super-width imaging effect by adopting an NSGAII algorithm. The NSGAII-based optimization method has effective algorithm, aims at the multi-objective optimization problem of reducing the fuel consumption required for maintaining the formation pattern and improving the super-width imaging observation effect, and realizes the optimal design of the satellite formation configuration.
Description
technical field [0001] The invention discloses an optimization method based on NSGA II ultra-wide imaging satellite formation configuration, relates to the ultra-wide imaging satellite formation configuration design, and belongs to the technical field of control and adjustment. Background technique [0002] With the rapid development of big data processing and aerospace technology, the application scale of satellite remote sensing technology in various fields of production and life in human society continues to expand, and global commercial remote sensing satellites have entered a period of comprehensive technology update and industrialization development. The image width of a traditional single earth observation satellite is limited. Even if the image stitching method is used to increase the width through limited side swing maneuvers, it is difficult to guarantee the uniformity of resolution and time of each earth observation image. With the development of satellite develop...
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IPC IPC(8): G05D1/10
CPCG05D1/104
Inventor 华冰黄宇吴云华陈志明
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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