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目前高分辨率地震勘探多采用炸药震源，但常因地表地质条件的复杂而使炸药震源的使用受到限制。可控震源非线性扫描方法，通过控制激发信号高频振动时间，提高激发地震信号的高频成分，可达到高分辨率地震勘探的目的。我们在砾石覆盖区开展了可控震源非线性扫描的试验，并完成了一定的工作量，取得了满意的效果。
Currently, high-resolution seismic exploration uses explosives sources, but the use of explosives sources is often limited due to the complex geological conditions on the surface. The vibroseis nonlinear scanning method can achieve the purpose of high-resolution seismic exploration by controlling the high-frequency vibration time of the excitation signal and increasing the high-frequency component of the excited seismic signal. We carried out non-linear scanning of vibrator in the gravel area and completed a certain amount of work, and achieved satisfactory results.