上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2011年
5期
50-54,72
,共6页
全球卫星定位系统%姿态解算%模糊度函数法%适应度函数
全毬衛星定位繫統%姿態解算%模糊度函數法%適應度函數
전구위성정위계통%자태해산%모호도함수법%괄응도함수
Global positioning system%Attitude determination%Ambiguity function method%Adaptive function
基于全球卫星定位系统（GPS）双差整周模糊度的统计特性,对模糊度函数法（AFM）中的适应度函数进行了改进。分析了传统余弦适应度函数的不足,论证了适应度函数在AFM算法中的重要性。提出了设计适应度函数应满足的五条标准,在此基础上给出了一类适应度函数公式,并对性能进行测试。结果表明：该适应度函数的性能明显优于传统的余弦函数,有效提高了GPS姿态解算的成功率。
基于全毬衛星定位繫統（GPS）雙差整週模糊度的統計特性,對模糊度函數法（AFM）中的適應度函數進行瞭改進。分析瞭傳統餘絃適應度函數的不足,論證瞭適應度函數在AFM算法中的重要性。提齣瞭設計適應度函數應滿足的五條標準,在此基礎上給齣瞭一類適應度函數公式,併對性能進行測試。結果錶明：該適應度函數的性能明顯優于傳統的餘絃函數,有效提高瞭GPS姿態解算的成功率。
기우전구위성정위계통（GPS）쌍차정주모호도적통계특성,대모호도함수법（AFM）중적괄응도함수진행료개진。분석료전통여현괄응도함수적불족,론증료괄응도함수재AFM산법중적중요성。제출료설계괄응도함수응만족적오조표준,재차기출상급출료일류괄응도함수공식,병대성능진행측시。결과표명：해괄응도함수적성능명현우우전통적여현함수,유효제고료GPS자태해산적성공솔。
Based on the statistical properties of GPS double difference integer ambiguity,the adaptive function in the ambiguity function method（AFM） was improved in this paper.The drawback of traditional cosine adaptive function was analyzed and the importance of adaptive function in AFM was pointed.The five standards that adaptive function should satisfy were presented.Based on them,some improved adaptive functions were given with repeated tests.The results showed that the performance of suggested function was better than cosine function,and the new function effectively improved the success rate of GPS attitude determination.
