~35,786 km. Fixed position over the equator; ideal for continuous broadcast and weather monitoring.
For a given latitude φ, the probability of coverage ≥ 1 satellite is: P_cov = 1 - (1 - (λ / 2π))^N where λ is the longitude swath and N is number of satellites in view.
, the following books, technical papers, and educational resources represent the industry standard. Core Textbooks and Definitive Guides
PDF inclusion : MATLAB or Python pseudo-code for computing Walker constellation coverage patterns and plotting ground tracks.
