The document discusses the calibration of inertial measurement units (IMUs) using particle swarm optimization (PSO) and human opinion dynamics (HOD) algorithms to address deterministic errors such as bias, scale factor, and misalignment. These optimization techniques are designed to enhance the accuracy of inertial navigation systems (INS) that are essential in various applications including missile guidance and mobile navigation. By utilizing mathematical models and optimization methods, the paper outlines a cost-effective approach for calibrating IMUs without the need for external equipment.