It's just a suggestion. It solves the grammar error in "the accels to estimate"; spells out "accelerometer measurements" clearly since people reading the doxygen docs might not be familiar with the jargon; and places what the module does first and places how it does it in a subordinate clause, since in the module description the how is less important than the what.

P.S. There's no passive voice in this sentence, but I wouldn't get hung up on style here. Passive is frowned on in in literary writing, but in technical writing it's perfectly fine.