桂林理工大学学报
桂林理工大學學報
계림리공대학학보
Journal of Guilin University of Technology
2015年
3期
602-606
,共5页
Schwab-Knopoff算法%数值溢出%频散函数%算法优化
Schwab-Knopoff算法%數值溢齣%頻散函數%算法優化
Schwab-Knopoff산법%수치일출%빈산함수%산법우화
Schwab-Knopoff algorithm%digital overflow%dispersion function%optimized algorithm
针对Schwab-Knopoff算法在高频阶段容易出现上下限溢出和有效数字缺失的缺陷提出了该算法在数值溢出阶段的一种算法改进方法: 分析影响溢出的主要影响因子, 省略相对很小的数值, 设法消去共同最大的约数, 达到因子数值的整体减小, 增加有效数值的长度, 从而解决数值溢出问题. 实验结果表明:简化算法能够解决高频阶段的数值溢出和有效数字的缺失, 使有效频率达到5 000 Hz以上, 满足实际应用、 简单易行, 为实际勘探提供了可靠的频散函数曲线.
針對Schwab-Knopoff算法在高頻階段容易齣現上下限溢齣和有效數字缺失的缺陷提齣瞭該算法在數值溢齣階段的一種算法改進方法: 分析影響溢齣的主要影響因子, 省略相對很小的數值, 設法消去共同最大的約數, 達到因子數值的整體減小, 增加有效數值的長度, 從而解決數值溢齣問題. 實驗結果錶明:簡化算法能夠解決高頻階段的數值溢齣和有效數字的缺失, 使有效頻率達到5 000 Hz以上, 滿足實際應用、 簡單易行, 為實際勘探提供瞭可靠的頻散函數麯線.
침대Schwab-Knopoff산법재고빈계단용역출현상하한일출화유효수자결실적결함제출료해산법재수치일출계단적일충산법개진방법: 분석영향일출적주요영향인자, 성략상대흔소적수치, 설법소거공동최대적약수, 체도인자수치적정체감소, 증가유효수치적장도, 종이해결수치일출문제. 실험결과표명:간화산법능구해결고빈계단적수치일출화유효수자적결실, 사유효빈솔체도5 000 Hz이상, 만족실제응용、 간단역행, 위실제감탐제공료가고적빈산함수곡선.
Schwab-Knopoff can only partly control the overflow on the basis of the original Knopoff algorithm.In the high frequency phase it tends to upper or lower limits and losses effective digitals.An improved method is presented on Schwab-Knopoff algorithm to overcome the digital overflow .The main factors are analyzed and dis-assembled to greatly impact the overflow in formulas.Omitting relatively little values, the greatest common divi-sor was eliminated to decrease the effective valuable number, keeping it in the limits of validity.Experimental results show that the simplified and optimized algorithm can solve the numerical overflow and the lack of effec-tive numbers in high frequency phase.The frequency can exceed 5 000 Hz, and meet the standards in actual application.It is a simple and valid algorithm and can provide reliable dispersion function curve in practical ap-plication.
