2 publications

• Published Subscription Review Article 26 Sep 2026

  Reliability-Aware Mathematical Model for Radiation-Hardened Satellite Communication Systems

  By Rosalin Pradhan, Sidhartha Kumar Samal, Sritam Parida, Bibhu Prasad Ganthia

  Abstract: Satellite communication systems operate in radiation environments in which total ionizing dose (TID), displacement damage, and single-event effects (SEE) can progressively degrade electronic, optoelectronic, and communication components and can ultimately reduce link availability and mission reliability. This paper develops a Reliability-Aware Radiation-Hardened Satellite Communication Model (R-RHSCM) that mathematically couples the orbital radiation environment, accumulated radiation dose, component degradation, communication-link performance, single-event failure probability, redundancy, thermal effects, and adaptive mitigation. The …

  Published in Research & Reviews : Journal of Space Science & Technology · Vol. 15, Issue 2, 2026 Read article →

• Published Subscription Review Article 24 Sep 2026

  Mathematical Analysis and Stability Analysis of Coupled Orbital–Attitude Dynamics for Autonomous Spacecraft under Perturbative Forces

  By Rosalin Pradhan, Sidhartha Kumar Samal, Bibhu Prasad Ganthia

  Abstract: Autonomous spacecraft operating in Earth orbit are subjected to coupled translational and rotational dynamics influenced by gravitational and environmental perturbations. Accurate mathematical characterization of these interactions is essential for trajectory prediction, attitude stabilization, autonomous navigation, and mission reliability. This study develops a nonlinear mathematical framework for coupled orbital–attitude dynamics of an autonomous spacecraft under perturbative forces. The translational dynamics are formulated using the two-body gravitational model augmented by the second …

  Published in Research & Reviews : Journal of Space Science & Technology · Vol. 15, Issue 2, 2026 Read article →