Non-Geostationary Satellite Transmission Power Control

The patent applies local quality by differentiating transmission power limits based on the topocentric angle. Instead of applying a uniform power limit across all directions, the method defines angle-dependent power thresholds (first, second, and third threshold values) that allow higher transmission power when the topocentric angle is larger (less interference risk) and lower power when the angle is smaller (higher interference risk). This localized adjustment optimizes capacity while maintaining interference protection.

The patent changes the parameter of transmission power based on the topocentric angle parameter. By establishing a relationship between the angle parameter and power parameter through threshold comparisons, the system dynamically adjusts allowable transmission power levels. This parameter transformation allows the constellation to operate at higher powers in safe angular regions while maintaining compliance in critical regions, thereby increasing overall capacity without exceeding interference limits.

The patent introduces dynamics by making the power limit a function of the topocentric angle rather than a static constraint. The system continuously evaluates the angle between the non-geostationary satellite, ground station, and geostationary satellite arc, and adjusts the allowable transmission power accordingly. This dynamic approach replaces the conservative static definition with an adaptive mechanism that maintains protection reliability while enabling higher power operation in angular regions where interference risk is lower.

The patent segments the angular space into multiple regions based on threshold values (first angle threshold, second angle threshold) and applies different power limits to each segment. This segmentation of the continuous angular parameter into discrete zones with different power constraints allows the system to provide strong protection in critical angular regions while permitting higher power in less critical regions, thereby optimizing the balance between protection and capacity.

The patent applies partial action by using multiple threshold values (first, second, third thresholds) rather than a single minimum angle constraint. This creates a graduated scale of power limitations where the first threshold provides baseline compliance, the second threshold offers intermediate optimization, and the third threshold enables maximum power in safe regions. This partial application of constraints at different angular levels achieves compliance precision while improving power constraint definition accuracy.

The method implements feedback by continuously monitoring the topocentric angle and adjusting the applicable power threshold based on the measured angle value. The system compares the calculated minimum topocentric angle against the defined threshold values and selects the appropriate power limit accordingly. This feedback mechanism ensures precise compliance with jamming level requirements while accurately defining operational power constraints based on real-time angular measurements.