https://sites.temple.edu/sserrano/files/2020/08/18-Analysis-of-Muskingum-Equation-Based-Flood-Routing-Schemes.pdf
By John J. Gelegenis1 and Sergio E. Serrano2 ABSTRACT: The linear Muskingum method continues to be a simple and popular procedure for river flood routing. An alternative algorithm for the numerical estimation of the Muskingum routing parameters is presented. Fully implicit and semi-implicit finite-difference schemes are compared for accuracy with respect to the tradi-tional graphical procedure ...
https://cis.temple.edu/~apal/npa.pdf
Now for all nodes ni the heuristics uses the hop-counts h1,i, h2i, h3,i, h4,i, and h5,i from the chosen reference nodes to approximate the polar coordinates (ρi, θi) where ρi = h5,i * R θi = tan-1[(h1,i – h2,i) / (h3,i – h4,i)] (7) (8) and R is the maximum radio range.