| 输入—输出系统理论在重力场扰动场元推估中的应用分析 |
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| 引用本文： | 翟振和,孙中苗.输入—输出系统理论在重力场扰动场元推估中的应用分析[J].海洋测绘,2009,29(5):8-10. |
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| 作者姓名： | 翟振和 孙中苗 |
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| 作者单位： | 1. 解放军信息工程大学,测绘学院,河南,郑州450052;西安测绘研究所,陕西,西安710054
2. 西安测绘研究所,陕西,西安710054 |
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| 摘 要： | 研究了输入—输出系统理论用于扰动场元推估的一般形式,以重力异常推估大地水准面为例,推导了双输入—单输出系统用于重力场推估的具体形式。通过实际算例表明：输入—输出系统在推估效果上等效于最小二乘配置,利用局部重力异常推估大地水准面的精度在0.4m左右。
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| 关 键 词： | 大地水准面 重力扬 输入—输出系统理论 推估 |
The Application of Input-output System Theory in the Estimation of Gravity Field |
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| ZHAI Zhen-he,SUN Zhong-miao.The Application of Input-output System Theory in the Estimation of Gravity Field[J].Hydrographic Surveying and Charting,2009,29(5):8-10. |
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| Authors: | ZHAI Zhen-he SUN Zhong-miao |
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| Institution: | 1. Institute of Surveying and Mapping, Information Engineering University, Zhengzhou, Henan,450052 ; 2. Xi＇ an Research Institute of Surveying and Mapping, Xi＇ an,Shaanxi, 710054) |
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| Abstract: | The Input-output System Theory （lOST） is analyzed based on the general form , and the estimation effect of the disturbance field factor is compared with traditional method. In order to combine different gravity data , the two Input-single Output system is established. The research shows that the general form of the Input-output system theory is equivalent to frequency domain of traditional theory, and lOST has the same estimation effect as Least square collocation. The local geoid is established based on the two Input-single output system and has the accuracy of about 0.4m. |
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| Keywords: | geoid gravity field input-output system theory estimation |
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