GPS姿态测量中模糊度函数法的适应度函数研究  

Research on Adaptive Function in Ambiguity Function Method for Attitude Determination Using GPS

作　　者：陈万通[1] 秦红磊[1] 

机构地区：[1]北京航空航天大学电子信息工程学院

出　　处：《上海航天》2011年第5期50-54,72,共6页Aerospace Shanghai

基　　金：国家"863"高技术研究发展计划(2009AA12Z313)

摘　　要：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。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.

关 键 词：全球卫星定位系统 姿态解算 模糊度函数法 适应度函数 

分 类 号：TN967.1[电子电信—信号与信息处理]