【摘要】 扫描技术是可控震源技术的重要组成部分 ,扫描信号自相关函数的形状是影响可控震源地震勘探分辨率的重要因素。理想的自相关函数是脉冲函数 δ(t) ,而实际的自相关函数具有主瓣和旁瓣 ,扫描技术的目的是突出自相关函数的主瓣而压制或消除其旁瓣。为进一步发展扫描技术 ,文章将已经应用或探讨过的扫描技术归纳为线性扫描、非线性扫描、联合扫描、编码扫描和伪随机序列扫描五种方式 ,并对它们进行简要分析更多还原

【Abstract】 Sweep technique plays an important role in Vibroseis system,the resolution of Vibroseis seismic prospecting is affected by the shape of the sweep signal′s auto correlation function.The ideal auto correlation function is impulse function δ(t),but there are main lobe and side lobes in practical auto correlation function.The objective of sweep technique is to improve mainlobe and reduce or even eliminate side lobes.Sweep techniques used or discussed are synthesized into five sweep modes,which include linear sweep,non linear sweep,combined sweep,and pseudo random sequence sweep,and these are also analyzed.更多还原