时间频率学报
時間頻率學報
시간빈솔학보
JOURNAL OF TIME AND FREQUENCY
2012年
1期
43-49
,共7页
李慧茹%黄观文%赵敏宁%龚云%刘同文
李慧茹%黃觀文%趙敏寧%龔雲%劉同文
리혜여%황관문%조민저%공운%류동문
周跳检测%宽巷组合%电离层残差组合
週跳檢測%寬巷組閤%電離層殘差組閤
주도검측%관항조합%전리층잔차조합
cycle slip detection%wide-lane combination%ionospheric combination
介绍GIPSY(GNSS-inferred positioning system)中周跳检测与修复的TurboEdit算法,在此基础上对TurboEdit方法的周跳检测条件进行分析,在用宽巷组合检测周跳的过程中采用滑动平均的方法替代宽巷模糊度中对每一历元之前的所有数据整体求平均的方法,同时在用电离层残差组合检测周跳中采用相邻历元的载波相位电离层残差组合求差的方法,从而避免引入观测噪声较大的伪距电离层残差组合。实验表明:改进后的TurboEdit法对于发生在观测数据质量不好时段的周跳、Turboedit法的检测盲点以及频繁周跳的检测能力都有所提高。
介紹GIPSY(GNSS-inferred positioning system)中週跳檢測與脩複的TurboEdit算法,在此基礎上對TurboEdit方法的週跳檢測條件進行分析,在用寬巷組閤檢測週跳的過程中採用滑動平均的方法替代寬巷模糊度中對每一歷元之前的所有數據整體求平均的方法,同時在用電離層殘差組閤檢測週跳中採用相鄰歷元的載波相位電離層殘差組閤求差的方法,從而避免引入觀測譟聲較大的偽距電離層殘差組閤。實驗錶明:改進後的TurboEdit法對于髮生在觀測數據質量不好時段的週跳、Turboedit法的檢測盲點以及頻繁週跳的檢測能力都有所提高。
개소GIPSY(GNSS-inferred positioning system)중주도검측여수복적TurboEdit산법,재차기출상대TurboEdit방법적주도검측조건진행분석,재용관항조합검측주도적과정중채용활동평균적방법체대관항모호도중대매일역원지전적소유수거정체구평균적방법,동시재용전리층잔차조합검측주도중채용상린역원적재파상위전리층잔차조합구차적방법,종이피면인입관측조성교대적위거전리층잔차조합。실험표명:개진후적TurboEdit법대우발생재관측수거질량불호시단적주도、Turboedit법적검측맹점이급빈번주도적검측능력도유소제고。
The TurboEdit algorithm, which is adopted to detect and repair the cycle slips in GIPSY (GNSSinferred positioning system), is introduced, and on the basis of this introduction the prerequisiste for cycle-slip detecting in the TurboEdit algorithm is analyzed. The moving average is used to replace the overall average of all the data prior to the epoch in detecting .the cycle slip with the wide-lane combination algorithm, and in the ionospheric combination algorithm the difference between the values of carder phase ionospheric combination for adjacent epochs is used to detect the cycle slip so as to avoid the pseudorang ionospheric combination with higher noise. The experimental results show that the improved algorithm is more effective than the original TurboEdit algorithm for the bad observation condition, the blind-spots in TurboEdit algorithm, and high cycle slip rates.