Gravimetry and magnetometry methods, which are among the methods of measuring potential field, are used in variety of fields such as mineral prospectivity, geological studies and so on. Airborne potential field data surveying has many advantages over ground surveying. Despite these advantages, due to the attenuation of the received signals, there are defects in the visual presentation that make it difficult to distinguish the causative sources responsible for anomaly. These defects can be suppressed by applying a two-step inversion, which is a combination of stable downward continuation in frequency domain and physical property modeling. The results of employing this method on synthetic data, and real magnetic data pertaining to the Esfordi region in Yazd province showed that the proposed method is able to properly identify the sources of anomalies even in small sizes.