احمد محمد السيد عبد العزيز
مدرس مساعد
Intelligent detection of traveling ionospheric disturbances from dense GNSS TEC observations utilizing instance segmentation model Cascade Mask R-CNN
GPS Solutions • 2025
معلومات البحث
المؤلفون
Ren, Xiaodong
Zhao, Pengchong
Le, Xuan
Jian, Linghuo
Abdelaziz, Ahmed
Zhang, Xiaohong
الكلمات المفتاحية
Traveling ionospheric disturbances (TIDs) · Global navigation satellite system (GNSS) · Ionospheric total electron content (TEC) · Deep learning · Instance segmentation · Cascade Mask R-CNN
المجلة العلمية
GPS Solutions
الناشر
Not Available
المجلد
29
العدد
3
الصفحات
1-17
publication.type
International
رابط البحث
Open Link
المواد المرفقة
Not Available
الملخص
Traveling ionospheric disturbances (TIDs) may significantly change the ionospheric properties in the region, which in turn affects the radio propagation process, especially on short-wave communication, satellite navigation and positioning. TIDs detection and propagation parameter calculation are essential foundations for ionospheric disturbance monitoring and early warning. Comparisons between Cascade Mask R-CNN and the classical Mask R-CNN models in instance segmentation results were conducted using global LSTIDs and European MSTIDs data. The results indicate that Cascade Mask R-CNN outperforms Mask R-CNN in image processing accuracy and training convergence speed, with an improvement of approxi- mately 4.7% in bounding box precision and about 3.6% in mask accuracy. The model achieved mask accuracies of 79.34% and 73.37% in the European region and globally, respectively. Subsequently, irregular disturbances were normalized using a least squares ellipse fitting method, and isolated disturbances were filtered and eliminated using filtering criteria and a nonlinear programming solver. When the filtering threshold T1 was set to 40, isolated disturbances could be effectively fil- tered out while retaining wave disturbance components. The method yielded TIDs propagation parameters in DTEC maps in different regions that closely matched actual results.
