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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
Scanning technology is an important part of vibroseis technology. The shape of the autocorrelation function of scanning signal is an important factor that affects the resolution of seismic exploration of vibroseis. The ideal autocorrelation function is the pulse function δ (t), while the actual autocorrelation function has a main lobe and a side lobe. The purpose of the scanning technique is to highlight the main lobe of the autocorrelation function and suppress or eliminate its side lobe. In order to further develop the scanning technology, the article summarizes the scanning techniques that have been applied or explored into five ways: linear scanning, non-linear scanning, combined scanning, code scanning and pseudo-random sequence scanning, and briefly analyze them