| GPS参考站对流层湿延迟近实时估计的三步滤波算法 |
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| 引用本文： | 刘宁, 张永志, 熊永良. GPS参考站对流层湿延迟近实时估计的三步滤波算法[J]. 武汉大学学报 ( 信息科学版), 2015, 40(7): 918-923. DOI: 10.13203/j.whugis20130600 |
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| 作者姓名： | 刘宁 张永志 熊永良 |
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| 作者单位： | 1长安大学地质工程与测绘学院,陕西西安,7100542西南交通大学地球科学与环境工程学院,四川成都,610031 |
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| 基金项目： | 国家自然科学基金资助项目(41374028)；国土资源部国土资源大调查资助项目(1212010914015) |
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| 摘 要： | 利用参考站坐标已知的先验信息,基于组合后的超快星历,提出了一种参考站对流层湿延迟近实时估计的三步Kalman滤波算法,该方法先利用Kalman滤波分离宽巷模糊度与伪距多路径误差,再基于电离层无关组合模型,启动Kalman滤波器进行犔１?扔胂喽远粤鞑闶映俚姆掷耄缓罄媒饭潭ǖ臓蹋彼钅:冉谢卮姆椒ǎ匦鹿菇ǎ耍幔欤恚幔盥瞬ㄆ骼垂兰谱既返南喽远粤鞑闶映俨问ü道橹ち烁梅椒ǖ目尚行院驼沸浴€
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| 关 键 词： | GPS参考站 超快星历 对流层湿延迟 Kalman滤波 整周模糊度 |
| 收稿时间： | 2013-10-24 |
| 修稿时间： | 2015-07-05 |
A Three-step Kalman Filter Algorithm for Near Real-time Estimating Tropospheric Wet Delay on GPS Reference Stations |
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| LIU Ning, ZHANG Yongzhi, XIONG Yongliang. A Three-step Kalman Filter Algorithm for Near Real-time Estimating Tropospheric Wet Delay on GPS Reference Stations[J]. Geomatics and Information Science of Wuhan University, 2015, 40(7): 918-923. DOI: 10.13203/j.whugis20130600 |
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| Authors: | LIU Ning ZHANG Yongzhi XIONG Yongliang |
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| Affiliation: | 1SchoolofGeologyEngineeringandGeomatics,Chang’anUniversity,Xi’an710054,China;2FacultyofGeosciencesandEnvironmentalEngineering,SouthwestJiaotongUniversity,Chengdu610031,China |
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| Abstract: | Usingprioriinformationfromknowncoordinatesforreferencestations,basedontacombi nationofultrarapidephemeris,athree stepkalmanfilteralgorithmfornearreal timeestimationoftroposphericwetdelayonreferencestationsisproposed.Inthisalgorithm,widelaneambiguityandpseudorangemultipatherrorareseparatedbyusingaKalmanfilter,andthen,usingtheKalmanfilterforseparating犔１ａｍｂｉｇｕｉｔｙａｎｄｔｒｏｐｏｓｐｈｅｒｉｃｗｅｔｄｅｌａｙｂａｓｅｄｏｎｎａｉｏｎｏｓｐｈｅｒｅ ｆｒｅｅｃｏｍｂｉｎａｔｉｏｎｍｏｄ el.Afterthatestimatinganaccuraterelativetroposphericwetdelayparameterusingthecorrectlyfixed犔１ａｍｂｉｇｕｉｔｙｂａｃｋｓｕｂｓｔｉｔｕｔｉｏｎｍｅｔｈｏｄａｎｄｒｅｂｕｉｌｄｉｎｇｔｈｅＫａｌｍａｎｆｉｌｔｅｒ．Ｔｈｅｆｅａｓｉｂｉｌｉｔｙａｎｄａｃ curacyofthealgorithmisverifiedthroughnumericalexamples. |
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| Keywords: | GPSreferencestations ultrarapidephemeris troposphericwetdelay Kalmanfilter inte gerambiguity |
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