Jamming Efficacy Analysis of Chaff using AI/ML
Nishan Arya, Elisha Chand, Anshul Mathur, Umesh Kumar, Verandra Kumar, Alok Basita, Prashant Vasistha · 2024
Chaff is a Passive Electronic Countermeasure technology that plays a pivotal role in war scenarios. It can be used as a passive jammer to effectively shield a war platform. It can mimic the platform’s radar cross section (RCS) signature and act as a deceptive pseudo target. This manuscript presents an analysis of jamming efficacy of chaff cloud. For this, three feature extraction and four AI/ML classification methods were employed, assuming that the Moving Target Indicator (MTI) and Doppler capabilities of the tracking radar are off. The effect of three different chaff deployment locations on its jamming performance has been analyzed to determine the best possible deployment location. In the measurement setup, the range profile of the cloud is measured in the presence of a target. The classification performances of the extracted feature vectors are evaluated using the Support Vector Machine (SVM), unsupervised distance classification (UDC), Naïve Bayes (NB) and Decision Tree (DT). Maximum 58.33% decrease in recognition rate was observed with the introduction of chaff cloud when UDC and SVM approaches are employed and chaff is deployed from 90°. Noise has been introduced to closely predict the actual, practical performance of chaff in an actual deployment environment. The recognition rates fall less than 8.33% for SVM and NB when AWGN (Artificial White Gaussian Noise) is 1.2 times. Based on these results, the jamming efficacy and the optimized tactical using strategy of the chaff cloud are proposed. Better Out of the four AI/ML approaches, UDC and DT exhibit best jamming performance and SVM exhibits the best anti-jamming performance. Any discrepancy and chances of overfitting can be avoided using a larger dataset with more features.