[1] [1] FENG YCHEN JHUANG Z Xet al.A lightweight positionenhanced anchorfree algorithm for SAR ship detection［J］.Remote Sensing202214：1908.

[2] [2] XIE TLIU M XZHANG M Jet al.Ship detection based on a superpixellevel CFAR detector for SAR imagery［J］.International Journal of Remote Sensing202243(9):34123428.

[3] [3] ZHOU W BJIA H CXIAO X Yet al.SAR ship detection network incorporating CFAR preprocessing［C］//IEEE International Geoscience and Remote Sensing Symposium.Kuala Lumpur:IEEE2022:21512154.

[4] [4] YANG Z QTANG J JZHOU Het al.Joint ship detection based on timefrequency domain and CFAR methods with HF radar［J］.Remote Sensing202113(8):1548.

[5] [5] ZHANG YHAO Y S.A survey of SAR image target detection based on convolutional neural networks［J］.Remote Sensing202214(24):6240.

[10] [10] CHIERCHIA GCOZZOLINO DPOGGI Get al.SAR image despeckling through convolutional neural networks［C］//IEEE International Geoscience and Remote Sensing Symposium (IGARSS).Fort Worth:IEEE2017:54385441.

[11] [11] JOCHER GCHAURASIA AQIU J.YOLO by ultralytics［EB/OL］.(20230110)［20230810］.https://github.com/ultralytics/ultralytics.

[12] [12] CANNY J.A computational approach to edge detection［J］.IEEE Transactions on Pattern Analysis and Machine Intelligence1986(6):679698.

[13] [13] HOU Q BZHOU D QFENG J S.Coordinate attention for effificient mobile network design［C］//IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR).Nashville:IEEE2021:1370813717.

[14] [14] WANG X XWANG G ZDANG Q Q,et al.PPYOLOER:an efficient anchorfree rotated object detector［J］.arXiv preprint arXiv:2211.02386.2022.

[15] [15] YAN FZHAO SVENEGASANDRACA S Eet al.Implementing bilinear interpolation with quantum images［J］.Digital Signal Processing,2021117:103149.

[16] [16] YANG X,ZHOU Y,ZHANG G Fet al.The KFIoU loss for rotated object detection［R］.Los Alamos：arXiv Preprint 2023 arXiv:2201.12558.

[17] [17] LI J WQU C WSHAO J Q.Ship detection in SAR images based on an improved Faster RCNN［C］//2017 SAR in Big Data Era:Models,Methods and Applications (BIGSARDATA).Beijing:IEEE2017:16.

[19] [19] DABOV KFOI AKATKOVNIK Vet al.Image denoising by sparse 3D transformdomain collaborative filtering［J］.IEEE Transactions on Image Processing200716(8):20802095.

[20] [20] GU S HZHANG LZUO W Met al.Weighted nuclear norm minimization with application to image denoising［C］//IEEE Conference on Computer Vision and Pattern Recognition（CVPR）.Columbus:IEEE2014:28622869.

[21] [21] CHEN Y JYU WPOCK T.On learning optimized reaction diffusion processes for effective image restoration［C］//IEEE Conference on Computer Vision and Pattern Recognition(CVPR).Boston:IEEE2015:52615269.

[22] [22] ZHANG KZUO W MCHEN Y Jet al.Beyond a GAUSSIAN denoiser: residual learning of deep CNN for image denoising［J］.IEEE Transactions on Image Processing201726(7):31423155.

[23] [23] YU H CZHAO LWANG H X.Image denoising using trivariate shrinkage filter in the wavelet domain and joint bilateral filter in the spatial domain［J］.IEEE Transaction on Image Processing200918(10):23642369.

[24] [24] LEE J SWEN J HAINSWORTH T Let al.Improved Sigma filter for speckle filtering of imagery［J］.IEEE Transactions on Geoscience and Remote Sensing2009 47(1):202213.

[25] [25] TOUZI R.A review of speckle filtering in the context of estimation theory［J］.IEEE Transactions on Geoscience and Remote Sensing200240(11):23922404.

[26] [26] JIANG Y YZHU X YWANG X Bet al.R2CNN: rotational region CNN for orientation robust scene text detection［C］//The 24th International Conference on Pattern Recognition (ICPR).Beijing:IEEE2018:36103615.

[27] [27] LIN T YGOYAL PGIRSHICK Ret al.Focal loss for dense object detection［C］//IEEE International Conference on Computer Vision(ICCV).Venice:IEEE2017:29993007.

[28] [28] YI J RWU P XLIU Bet al.Oriented object detection in aerial images with box boundaryaware vectors［C］//IEEE Winter Conference on Applications of Computer Vision (WACV).Waikoloa:IEEE2021:21492158.

[29] [29] TIAN ZSHEN C HCHEN Het al.FCOS:fully convolutional onestage object detection［C］//IEEE/CVF International Conference on Computer Vision (ICCV).Seoul:IEEE2019:96269635.

[30] [30] WANG X XWANG G ZDANG Q Qet al.PPYOLOER:an efficient anchorfree rotated object detector［R］.Los Alamos：arXiv Preprint 2022:arXiv:2211.02386.