| GALILEO系统完备性指标SISMA的计算和分析 |
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| 引用本文： | 赵春梅,党亚民,张化疑.GALILEO系统完备性指标SISMA的计算和分析[J].测绘学报,2007,36(2):129-133. |
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| 作者姓名： | 赵春梅 党亚民 张化疑 |
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| 作者单位： | 中国测绘科学研究院,大地测量与地球动力学研究所,北京,100039;山东省基础地理信息与数字化技术重点实验室,山东,青岛,266510;中国测绘科学研究院,大地测量与地球动力学研究所,北京,100039 |
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| 基金项目： | 国家自然科学基金项目(40504003)，山东省基础地理信息与数字化技术重点实验室开放基金资助项目(SD060812) |
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| 摘 要： | 利用GALILEO全球监测网络和中国地壳运动监测网络分别对GALILEO系统完备性指标SISMA进行仿真计算。结果表明,全球完备性监测SISMA结果不稳定,随地理位置的变化较大,不能满足局部地区的生命安全服务要求;利用适当布设的局域监测网络进行的SISMA局域监测数值稳定,变化较小,结果明显优于全球SISMA监测结果,可以满足生命安全服务要求,可信度达到100%。在我国进行局域SISMA监测,是对全球完备性监测进行的有效和必要补充,提高系统的可用性和定位可信度。
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| 关 键 词： | 完备性指标 全球SISMA监测 局域SISMA监测 监测可信度 |
| 文章编号： | 1001-1595（2007）02-0129-05 |
| 修稿时间： | 2006-08-152006-12-13 |
Calculation and Analysis of Integrity Index SISMA of GALILEO System |
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| ZHAO Chun-mei,DANG Ya-min,ZHANG Hua-yi.Calculation and Analysis of Integrity Index SISMA of GALILEO System[J].Acta Geodaetica et Cartographica Sinica,2007,36(2):129-133. |
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| Authors: | ZHAO Chun-mei DANG Ya-min ZHANG Hua-yi |
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| Institution: | 1. Institute of Geodesy and Geodynamics, Chinese Academy of Surveying and Mapping, Beijing 100039, China; 2. The Key Laboratory of Geomatics and Digital Technology, Qingdao 266510, China |
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| Abstract: | The embedded integrity function in the Safety of Life Service of the Galileo system is the key for the ability to serve as navigation means in civil aviation.However for several Safety of Life relevant applications the required integrity performance is so high that local integrity concepts are required.The integrity index SISMA calculated by ground monitoring network can reflect the accuracy and availability of signal-in-space.Its reliable algorithm and monitoring result analysis are important to Galileo Safety of Life service.The integrity index SISMA of GALILEO system are calculated respectively based on GALILEO global integrity monitoring network and Crustal Movement Observation Network of China in this article.The simulation result reveals that the global monitoring result varies greatly with spatial position and doesn't satisfy the requirement of Safety of Life.The local integrity monitoring result is stable and superior to global monitoring result.The local monitoring availability reaches to 100 percent and can satisfy the requirement of Safety of Life.The local integrity monitoring in China,which is efficient and necessary supplement to global monitoring,improves the positioning availability and reliability of GALILEO system. |
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| Keywords: | integrity index global integrity monitoring local integrity monitoring monitoring availability |
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