红外与激光工程
紅外與激光工程
홍외여격광공정
INFRARED AND LASER ENGINEERING
2014年
10期
3439-3443
,共5页
非线性估计%航天器姿态确定%风险敏感滤波%容积数值积分
非線性估計%航天器姿態確定%風險敏感濾波%容積數值積分
비선성고계%항천기자태학정%풍험민감려파%용적수치적분
nonlinear estimation%spacecraft attitude determination%risk sensitive filter%cubature integration
针对复杂环境下航天器姿态确定系统中的模型和噪声不确定问题，提出一种基于求容积规则的风险敏感滤波(CF-RSF)的航天器姿态确定算法。该算法通过引入风险敏感算子来解决由于系统的不确定性而导致滤波器鲁棒性差，甚至发散的问题，并通过求容积规则来解决非线性积分问题。该方法不仅提高了滤波算法对系统不确定性问题的鲁棒性，而且一定程度上提高了滤波的精度，降低了滤波的计算复杂性。仿真结果表明了算法的有效性。
針對複雜環境下航天器姿態確定繫統中的模型和譟聲不確定問題，提齣一種基于求容積規則的風險敏感濾波(CF-RSF)的航天器姿態確定算法。該算法通過引入風險敏感算子來解決由于繫統的不確定性而導緻濾波器魯棒性差，甚至髮散的問題，併通過求容積規則來解決非線性積分問題。該方法不僅提高瞭濾波算法對繫統不確定性問題的魯棒性，而且一定程度上提高瞭濾波的精度，降低瞭濾波的計算複雜性。倣真結果錶明瞭算法的有效性。
침대복잡배경하항천기자태학정계통중적모형화조성불학정문제，제출일충기우구용적규칙적풍험민감려파(CF-RSF)적항천기자태학정산법。해산법통과인입풍험민감산자래해결유우계통적불학정성이도치려파기로봉성차，심지발산적문제，병통과구용적규칙래해결비선성적분문제。해방법불부제고료려파산법대계통불학정성문제적로봉성，이차일정정도상제고료려파적정도，강저료려파적계산복잡성。방진결과표명료산법적유효성。
A method to estimate spacecraft attitude using Risk Sensitive Filter was presented based on Cubature Rules (CF-RSF). The objective was to solve the uncertain problem of system model and noise in complex condition. Introducing risk sensitive function, this scheme overcame the poor robustness and even divergence of filter caused by system uncertainty, and solved nonlinear integral problem using cubature rules. The filter accuracy and robustness on system uncertainty were both improved, and the computational complexity was decreased. The simulation shows that the developed algorithm is effective.
