CAJ | 학술논문

一次波L1范数最小化的多次波自适应相减方法,简称L1方法,是基于匹配滤波器设计的多次波自适应相减算法中的一种常用方法.当一次波和多次波混杂在一起时,L1方法有时会伤害一次波,导致一次波同相轴的连续性变差.本文利用预测误差滤波器度量一次波同相轴的连续性,在L1方法的皋础上,提出一种能够在压制多次波的同时,尽量保持一次波同相轴连续性的多次波自适戍相减算法,简称连续性约束L1方法.利用Pluto模犁数据进行多次波相减的结果表明,连续性约束L1方法能够在有效压制多次波的同时,更好地保护一次波.
일차파L1범수최소화적다차파자괄응상감방법,간칭L1방법,시기우필배려파기설계적다차파자괄응상감산법중적일충상용방법.당일차파화다차파혼잡재일기시,L1방법유시회상해일차파,도치일차파동상축적련속성변차.본문이용예측오차려파기도량일차파동상축적련속성,재L1방법적고출상,제출일충능구재압제다차파적동시,진량보지일차파동상축련속성적다차파자괄수상감산법,간칭련속성약속L1방법.이용Pluto모리수거진행다차파상감적결과표명,련속성약속L1방법능구재유효압제다차파적동시,경호지보호일차파.
The L1-norm method is one of the widely used matching filters for adaptive multiple subtraction.When the primaries and multiples are mixed together,the L1-norm method might damage the primaries,leading to poor lateral continuity.In this paper,we propose a constrained L1-norm method for adaptive multiple subtraction by introducing the lateral continuity constraint for the estimated primaries.We measure the lateral continuity using prediction-error filters (PEF).We illustrate our method with the synthetic Pluto dataset.The results show that the constrained L1-norm method can simultaneously attenuate the multiples and preserve the primaries.