物探与化探
物探與化探
물탐여화탐
GEOPHYSICAL AND GEOCHEMICAL EXPLORATION
2014年
6期
1190-1194
,共5页
西永在%吴珊%廖桂香%李文杰
西永在%吳珊%廖桂香%李文傑
서영재%오산%료계향%리문걸
时间域航空电磁法%G-S变换%汉克尔变换%精度分析
時間域航空電磁法%G-S變換%漢剋爾變換%精度分析
시간역항공전자법%G-S변환%한극이변환%정도분석
time-domain airborne electromagnetic method%G-S transform%Hankel transform%accuracy analysis
分析说明了G?S变换和汉克尔变换的计算精度,当n=12或16时,G?S变换适用范围广且能保证精度;而汉克尔变换计算的相对精度达到10-6数量级;并且基于时间域航空电磁法偶极—偶极装置一维正演算法,在选取不同参数时,对航空电磁响应数值模拟精度进行了分析。结果表明G?S变换n值的选取对计算精度影响相对较大,而汉克尔变换中滤波参数的选取对计算精度影响较小。
分析說明瞭G?S變換和漢剋爾變換的計算精度,噹n=12或16時,G?S變換適用範圍廣且能保證精度;而漢剋爾變換計算的相對精度達到10-6數量級;併且基于時間域航空電磁法偶極—偶極裝置一維正縯算法,在選取不同參數時,對航空電磁響應數值模擬精度進行瞭分析。結果錶明G?S變換n值的選取對計算精度影響相對較大,而漢剋爾變換中濾波參數的選取對計算精度影響較小。
분석설명료G?S변환화한극이변환적계산정도,당n=12혹16시,G?S변환괄용범위엄차능보증정도;이한극이변환계산적상대정도체도10-6수량급;병차기우시간역항공전자법우겁—우겁장치일유정연산법,재선취불동삼수시,대항공전자향응수치모의정도진행료분석。결과표명G?S변환n치적선취대계산정도영향상대교대,이한극이변환중려파삼수적선취대계산정도영향교소。
This paper has analyzed the calculation precision of G?S transformation and Hankel transformation, when n = 12 or 16, G?S transform applicability is wide and can assure accuracy, and the relative accuracy of Hankel transform is up to 10-6 orders. Based on time?domain airborne electromagnetic method in time domain and dipole?dipole device 1?D forward modeling algorithm, , the authors analyzed the precision of response to airborne electromagnetic wave when different parameters were selected. The results show that the G?S transformation value of an influence on calculation accuracy is considerable, and selection of parameters of Hankel transformation filtering has small effects on calculation accuracy.