The report examines an alternative method for determining the Luna-26 spacecraft's orbital parameters to ensure guaranteed ground-based navigation support during the flight, deceleration, and operation phases of lunar orbit, as well as the timely completion of all scientific research program operations when the standard method is unfeasible. An existing navigation support method is considered, based on slant range and radial velocity measurements conducted sequentially by three geographically distributed command and measurement stations. The proposed alternative method for determining the spacecraft's orbital parameters utilizes ground-based data receiving stations of the Russian Academy of Sciences instead of one or two command and measurement stations.