How does satellite navigation contribute to submarine navigation, and what are its limitations?

Satellite Navigation Contribution to Submarine Navigation: Satellite navigation, primarily relying on the Global Positioning System (GPS), plays a crucial role in enhancing submarine navigation capabilities. Despite submarines operating in an environment where direct access to satellite signals is limited, satellite navigation contributes in several ways: 1. Surface Position Fixes: - Submarines periodically surface to acquire GPS fixes, allowing them to determine their precise surface position. During these brief surface intervals, the submarine's GPS receivers establish a connection with satellites, providing accurate latitude, longitude, and altitude information. 2. Updating Inertial Navigation Systems (INS): - The obtained GPS fixes serve as reference points to update the submarine's Inertial Navigation System (INS). Inertial sensors within the submarine continuously track its acceleration and changes in orientation, and by integrating this data over time, the INS estimates the submarine's position. The periodic injection of GPS-derived coordinates refines and corrects potential drift in the INS, ensuring accuracy over time. 3. Navigational Calibration: - GPS data aids in the calibration of other navigational sensors. By comparing GPS-derived positions with data from o....