The simulation results have shown that this method which combines rough and fine focus adjustment can ensure the focusing accuracy while improving the focusing speed.
仿真实验表明，这种粗精相结合的检调焦方法既能保证聚焦精度，又能提高聚焦速度。
2
Synthetic Aperture Focusing Technique (SAFT) can focus effectively to reflected waves, and improve the reconstructed image's resolution through rough B-scan method.