短基线约束条件下的整周模糊度二维搜索算法  

Planar Search Algorithm for GPS Ambiguity Resolution with Short Baseline Length Constraint

作　　者：庞春雷[1] 赵修斌[1] 卢艳娥[1] 严玉国[1] 余永林[1] 

机构地区：[1]空军工程大学电讯工程学院,西安710077

出　　处：《中国空间科学技术》2012年第3期43-48,56,共7页Chinese Space Science and Technology

基　　金：国家自然科学基金(61071014);学院科学创新基金(DYCX1001)资助项目

摘　　要：通过对基线仰角和方位角的搜索,在二次残差最小的条件下确定整周模糊度。建立了搜索模型,论述了搜索原理及其应用的具体过程,推导了粗搜索和精搜索的步长。通过试验与最小二乘降相关平差(Least-squares Ambiguity Decorrelation Adjustment,LAMBDA)算法进行分析比较,验证了新方法的正确性及可靠性,得到了1cm的基线精度,0.6°的仰角和0.4°的方位角精度,且算法简单,搜索效率高,适用于载体的姿态测量。A length constraint uare error by e search princi extensive sear new planar search method for GPS ambiguity resolution with short s was proposed. The integer ambiguity was fixed in the condition searching the baseline elevation and azimuth angle. The model was es ple and application process of the new algorithm were discussed, and ch and intensive search was induced. Through the experiments and c with LAMBDA algorithm, the new method with simple algorit proved. The error is no more than l cm in baseline precision, no hm and high more than 0.6° precision and no more than 0.4° in azimuth precision. This method is also adaptiv measurement. baseline of least tablished, the step omparing ficiency was in elevation e to attitude

关 键 词：短基线约束二维搜索 整周模糊度姿态测量航天器 

分 类 号：P228.4[天文地球—大地测量学与测量工程]