We update the velocity field by separated offset imaging to raise imagingprecision.
利用分偏移距成像，修正速度场，以达到提高成像精度的目的。
2
The numeric computation shows that those improvements can increase GA's efficiency and dielectric imagingprecision.
数值结果表明这些改进取得了明显效果，从而提高了介电成像的准确性。
3
Using the inversed results for same model with theoretical and physical method, we tested the proposed theory and discussed the method to improve the imagingprecision further.