摘要
通过分析影响磁力梯度仪的4大误差因素,认为地质信号主要分布在低频率段里,时变信号主要出现在中间频率段里,系统噪音主要出现在高频率段里,据此推断算法相应的定性行为。用正交相关函数法,计算了主从传感器之间的LAG值的范围。利用TVSA剖面积分法用于重建总场的研究,并把研究方法直接应用到了海上磁力梯度测线的重建总场中,恢复的结果显示方法是可行的。
Based on analying four major errors affecting gradiometers. It shows that geology signal presents at low frequencies, time variation presents at middle frequencies and system noise appeares at high frequencies. According to the analysis, it has concluded the corresponding algorithms. Range of LAG values is computed by the cross-correlation function between the master and slaver sensors. Using TVSA（ Time Variation Suppression Algorithm） method for reconstruction total field, and directly using marine gradiometer survey line for reconstruction total field, the algorithm has proved successful in reconstructed profile.
出处
《海洋测绘》
2008年第1期25-27,42,共4页
Hydrographic Surveying and Charting
基金
国家863高技术研究发展计划(2006AA09Z239)
973国家重点基础研究计划项目(2007CB411703)
关键词
磁力梯度
重建总场
LAG值
TVSA法
magnetic gradiometer
reconstruction of total field
LAG value
time variation suppression algorithm
