The Arctic and Antarctic DEMs were changed to utilize sources that have more recent and accurate data and better coverage; The num_tx_pulses calculation was changed to estimate an expected number of pulses that is not an integer. As such, the input used to calculate num_tx_pulses was changed to a floating point value (the output of the unified pulse count estimation); A single algorithm was implemented to estimate the number of pulses within a specified distance, and this single routine was integrated into the rest of the land ice height development code; Equilibrium tide values from ATL03 have been added to the geophysical group.