Intersatellite link configuration optimization design method based on NSGA-II algorithm

Abstract

The invention provides an inter-satellite link configuration optimization design method based on an NSGA-II algorithm, and belongs to the technical field of inter-satellite links of satellite navigation systems. The method comprises the following steps: determining the number N of decision variables influencing the inter-satellite link configuration; initializing a population, constraining the initialized population, and establishing an inter-satellite link; according to a designed inter-satellite link configuration, a multi-objective optimization function is constructed by taking an inter-satellite link configuration weighted average WAPDOP, a total communication routing number TCR and variances VTHL of all satellite hardware loads as optimization objectives; and optimizing the inter-satellite link design configuration according to the multi-objective optimization function. According to the method, the performance of the inter-satellite link design configuration is evaluated by constructing the inter-satellite link network type observation structure, the load capacity and the communication efficiency condition model, and the performance of the system is effectively improved, so that the autonomous navigation task is better completed, and the problem that the existing inter-satellite link configuration of the Beidou system cannot be optimal is solved.

Description

technical field [0001] The invention belongs to the technical field of inter-satellite links of satellite navigation systems, and in particular relates to a configuration optimization design method of inter-satellite links based on NSGA-II algorithm. Background technique [0002] The inter-satellite link of the Beidou-3 system is actually the communication link between satellites and satellites and between satellites and the ground. It has the function of two-way pseudo-range ranging. Beidou-3 adopts the Ka-band inter-satellite link of the narrow beam time division system. and the inter-satellite link antenna adopts a phased array antenna. The narrow beam inter-satellite link has the advantages of flexible pointing switching, high ranging accuracy, high communication rate, good anti-interference performance and low power consumption. [0003] The current inter-satellite link routing topology is mostly a mesh topology. This topology is relatively simple and fixed, which limi...

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides an optimal design method for inter-satellite link configuration based on NSGA-II algorithm, which solves the problem that the current Beidou system inter-satellite link configuration cannot be optimized

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