Thank you so much for the information.
In case you have any links to share about how DSN works, I'd appreciate.
And thank you also for mentioning coherent averaging. I'm more or less familiar with the concept but I've been trying to find out the name of the thing so that I could google on how to implement it (I've been collecting some information for assessing the feasibility of a project involving high-loss antennas).
Besides, I've never wondered how they tracked spacecrafts, especially those ones as far as new horizons and voyagers.