نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
With the rapid growth of satellite communications in various fields, particularly in military applications, and the high importance of communication security, the use of artificial intelligence-based methods to prevent the interception of communication signals and mitigate interference has become increasingly important. This paper proposes a multilayer perceptron (MLP) neural network-based method for the detection and identification of interference in the DVB-S2 satellite communication standard. The dataset used in this study includes modulated signals (QPSK and APSK with orders 8, 16, and 32) and various types of radio-frequency interference, including chirp interference (CI), continuous-wave interference (CWI), and multiple continuous-wave interference (MCWI). In the proposed method, a large number of statistical and spectral features are initially extracted from the signals. Then, the ten best features are selected using the Mahalanobis distance, Euclidean distance, chi-square, and variance-to-mean ratio (VdM) criteria to optimize the model performance. Numerical results demonstrate the improved accuracy of the VdM criterion in identifying interference, particularly under low signal-to-noise ratio (SNR) conditions. At SNR = 0 dB, the proposed method provides an accuracy improvement of up to 6% compared with previous methods, while at SNR = 9 dB, the accuracy of the proposed method reaches 99.74%.
کلیدواژهها English