地磁匹配制导基准图精度评价方法及其仿真实现
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摘要
为了提高基准图与实际地磁场信息的符合程度,并为基准图误差修正提供依据,文中从分析影响基准图精度的因素入手,把基准图制备过程中可能出现的误差和影响因素逐一分析,针对各种误差和影响因素的特点提出了4种精度评价方法,以此为依据对基准图的制备方法进行了改进;最后在选定区域进行了基准图精度评价仿真实验,并对基准图误差进行了修正,仿真实验表明:修正后的基准图能够更准确、完整地描述地磁场形态。
In order to improve the agreement between reference map and geomagnetic field information,and to provide the basis for the error correction of the reference map,the factors and errors affecting accuracy of reference map in the process of preparation were analyzed,and according to the characteristics of factors and errors,four methods were proposed.Then the method for reference map was improved.In the chosen area the accuracy of reference map was evaluated and simulated,and then the errors were corrected.The result shows that the corrected reference map could depict the geomagnetic field more accurately and completely.
In order to improve the agreement between reference map and geomagnetic field information,and to provide the basis for the error correction of the reference map,the factors and errors affecting accuracy of reference map in the process of preparation were analyzed,and according to the characteristics of factors and errors,four methods were proposed.Then the method for reference map was improved.In the chosen area the accuracy of reference map was evaluated and simulated,and then the errors were corrected.The result shows that the corrected reference map could depict the geomagnetic field more accurately and completely.
引文
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[11]陈欢欢,李星,丁文秀.Surfer8.0等值线绘制中的十二种插值方法[J].工程地球物理学报,2007,4(1):52-57.
[2]胡广书.数字信号处理[M].北京:清华大学出版社,2003.
[3]管志宁.地磁场与磁力勘探[M].北京:地址出版社,2005.
[4]乔玉坤,王仕成,张琪.地磁匹配特征量的选择[J].地震地磁观测与研究,2007,28(1):42-47.
[5]汤国安,刘学军,闾国军.数字高程模型及地学分析的原理与方法[M].北京:科学出版社,2005.
[6]张金生,王仕成,苏德伦,等.使用WMM2005进行地磁匹配制导的可行性初探[C]//武汉:第三届国家安全与军事地球物理学术研讨会论文集,2007:105-112.
[7]金绍华,于波,刘雁春,等.海洋磁力异常逼近方法研究[J].海洋测绘,2006,26(2):6-12.
[8]安振昌.1950-2000年中国地磁测量地磁图与地磁研究[J].地球物理学进展,1999,14(4):74-86.
[9]胡鹏,吴艳兰,胡海.数字高程模型精度评定的基本理论[J].地球信息科学,2003,3:64-70.
[10]Li Z.On the measure of digital terrain model accu-racy[J].Photogram Metric Record,1988,72(12):873-877.
[11]陈欢欢,李星,丁文秀.Surfer8.0等值线绘制中的十二种插值方法[J].工程地球物理学报,2007,4(1):52-57.
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