Optimization of parameters of attitude determination system of micro-core

2006 1st International Symposium on Systems and Control in Aerospace and Astronautics Pub Date : 2006-05-08 DOI:10.1109/ISSCAA.2006.1627486

Jie Sun, Yang Zhao, Zhao-wei Sun, Nan An

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Abstract

Micro-core is one general module of satellite, and its function density is very high. A new idea and a new concept are adopted to design micro-core. Aiming at attitude determination system (ADS) of micro-core, this paper adopts an optimization design method to determine parameters of sensors. In aspect of selecting sensors of attitude determine system, the optimization method adopted in this paper is greatly different from traditional methods, and realization of this method has important effects on design of micro-core and even on micro-satellite in the future. This paper selects both ADS based on star sensor and fiber-optic gyroscope (FOG) combination and ADS only based on star sensor as ADS of micro-core, and adopts extended Kalman filter (EKF) to estimate attitudes. This paper sets up optimization model of ADS, and adopts optimization method to determine parameters of star-sensor and FOG, and then optimization results are achieved, and finally are validated. By analyzing results, the optimization method is proved to be feasible and valid

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微岩心姿态确定系统参数优化

微核是卫星的一个通用模块，其功能密度很高。采用新思路、新概念设计微核。针对微核姿态确定系统，采用优化设计方法确定传感器参数。在姿态确定系统传感器的选择上，本文所采用的优化方法与传统方法有很大的不同，该方法的实现对今后微核甚至微卫星的设计都有重要的影响。本文选择基于星敏感器和光纤陀螺仪(FOG)组合的ADS和仅基于星敏感器的ADS作为微核ADS，并采用扩展卡尔曼滤波(EKF)进行姿态估计。本文建立了ADS的优化模型，采用优化方法确定了星敏感器和FOG的参数，并对优化结果进行了验证。通过分析结果，证明了该优化方法的可行性和有效性

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2006 1st International Symposium on Systems and Control in Aerospace and Astronautics

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