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由于我队生产中使用的检波器组合个数较少(每道只有九个检波器组合),因此正确地选择组距,就显得格外重要。过去我队记录讯噪比一直较低,恐怕与组合检波形式有一定关系。为此,我们专门做了组合检波和随机干扰调查试验。其目的是通过试验,掌握工区随机干扰的基本特征和了解不同组合形式的实际资料效果,从而正确地选择组合式,提高野外记录的讯噪比,以期获得尽可能好的原始资料。
Because of the small number of geophones used in our production (only nine geophones per channel), it is especially important to choose the group spacing correctly. In the past, my team recorded a lower signal-to-noise ratio, probably with a combination of detection forms. To this end, we have done a combination of detection and random interference investigation. The purpose is to experimentally master the basic characteristics of random interference in work areas and understand the actual data effects of different combinations so as to select the correct combination and improve the signal to noise ratio of field records so as to obtain the best possible original data.