地球物理勘探广义背景与异常识别

General background of geophysical exploration and abnormity recognization

系统定义地球物理勘探广义背景 (GBGE)的概念 ,明确提出异常识别解释的一系列方法技术 ;将源 -系统接触响应、系统响应、地 -检系统响应等 3个环节纳于系统综合响应 ,从数字信号处理的角度描述了其运算规律 ,初步提出了时间域和频率域异常响应分离的方法技术 ;结合综合响应测试所处的原位地球物理环境 ,指出异常的准确识别、异常的定性乃至定量解释急需解决的主要问题是广义地球物理勘探背景的界定 .该思想对物探工作方法、装置选择以及仪器系统设计有一定的指导意义 .

The concept of general background of geophysical exploration is defined and a series of methods and techniques for the abnormity interpretation are advanced in the paper. We take source-system contact response, system response and ground-measurement response as the integrated system response and describe its rule on the view of digital signals processing. Time-domain and frequency-domain abnormity separating methods are introduced presently. Combined with the geophysical circumstance of original detection of integrated response, the most urgent problem to be solved in abnormity recognizing as well as abnormity determining and abnormity quantify is the definition of GBGE. This idea, to some extend, will be of significance in choosing method and device as well as the design of instrument system.