摘要
利用GPS载波相位进行姿态测量时,要达到很高的精度必须保证观测数据中没有载波相位周跳的发生,因此,正确探测与修复周跳是GPS姿态测量中的一个关键问题。通过分析比较常用周跳探测方法,采用电离层残差法对周跳进行探测,同时提出一种基于拟合方法的周跳修复方法。该方法能解决电离层残差检测周跳时的多值性问题,能够检测较小周跳和10周以上大的周跳,并且能很好地区分和修复周跳发生历元的载波相位值。利用实测数据验证了该方法的有效性与可行性。
In order to achieve high precision, it needs to ensure that there is no cycle slip in the observational data when using GPS carrier phase to carry out attitude measurement. So it is a key issue to detect and repair cycle slips exactly during GPS attitude measurement. By analyzing and comparing general methods of cycle slips＇ detection, using the method of ionosphere residual to detect cycle slips, and at the same time, proposed a way to recover cycle slips based on the method of fitting. The method can resolve the problem of multi-value when using the method of ionosphere residual to detect the cycle slips less than 1 cycle and more than 10 cycles, as well as to distinguish and repair the carrier phase value where cycle slips happened. Real measuremental data is given to validate the efficiency and feasibility of method.
出处
《传感器与微系统》
CSCD
北大核心
2010年第9期70-73,共4页
Transducer and Microsystem Technologies
基金
国家自然科学基金资金项目(60974104)
中央高校基本科研专项资金资助项目(HEUCF00426)
