Adaptive and Fast Prescreening for SAR ATR via Change Detection Technique

作者：Quan, Sinong^*; Xiong, Boli; Zhang, Siqian; Yu, Meiting; Kuang, Gangyao

来源：IEEE Geoscience and Remote Sensing Letters, 2016, 13(11): 1691-1695.

DOI：10.1109/LGRS.2016.2604487

• Automatic target recognition (ATR)
• change detection
• synthetic aperture radar (SAR)
• target prescreening

Change detection is a process of identifying changes in the state of objects between the reference and test images. This letter presents a target prescreening method that employs the change detection technique for automatic target recognition in synthetic aperture radar (SAR) images. First, four translated versions of an original SAR image are generated, and the corresponding four likelihood ratio images are computed. Then, a robust threshold is derived from the ratio of the histogram at two adjacent gray-level values of the likelihood ratio images. Finally, the threshold is applied to perform the prescreening. The proposed method implements the procedure without any prior knowledge and overcomes the weak adaptability of traditional algorithms. Two different real X-band airborne SAR images acquired over Beijing are used to quantitatively and qualitatively demonstrate the effectiveness of the proposed method.

• 出版日期2016-11
• 单位中国人民解放军国防科学技术大学