研究目的
To analyze the rules of the solar array output current accurately for satellites in sun synchronous orbit by comprehensively researching influential factors and establishing a model.
研究成果
The model accurately fits the output current of the solar array, with a mean error of -0.3711 A and standard deviation of 2.6208 A. The temperature of the solar wing has a significant influence on output current, and more attention should be paid to temperature changes in satellite management for optimization.
研究不足
The model shows a sharp increase in error at a temperature point of 55°C, which is considered noise. The confidence interval is 98.83% (3σ), but fluctuations and potential noise in data may affect accuracy. The study is specific to sun synchronous orbit satellites and may not generalize to other orbits.
1：Experimental Design and Method Selection:
The study uses Poisson series fitting to model the relationship between output current and variables such as incidence angle of the sun, temperature, earth-sun distance factor, attenuation factor, and fixed offset angle. The least square method is employed for fitting coefficients.
2：Sample Selection and Data Sources:
256 sets of in-orbit data from a satellite that has been working normally for eighteen months are used, collected over two months.
3：List of Experimental Equipment and Materials:
Not specified in the paper.
4：Experimental Procedures and Operational Workflow:
Data on output current, incidence angle, temperature, earth-sun distance factor, attenuation factor, and fixed offset angle are collected and analyzed. The Poisson series model is applied and verified against the data.
5：Data Analysis Methods:
The least square method is used to minimize the objective function for fitting Poisson coefficients. Statistical analysis includes mean error and standard deviation calculations.
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