“…The moving ranging sensor registration problem has been addressed several times with solutions broadly falling into two categories: (a) Methods that use a model of the world as a reference, solving the registration problem by finding the sensor pose that best fits sensor measurements to the model from several different sensor locations (Duff, 2006;Gao, Sands, & Spletzer, 2010;Kurz, Buckley, Howell, & Schneider, 2011;Phillips, Green, & McAree, 2015;Underwood, Hill, & Scheding, 2007;Williams, Upcroft, Denman, Reid, & McAree, 2009); and (b) methods that solve the registration problem by making use of correlations in point clouds acquired from different locations of the sensor (Chan & Lichti, 2013;Elseberg, Borrmann, & Nüchter, 2013;Levinson & Thrun, 2014;Maddern, Harrison, & Newman, 2012;Nouira, Deschaud, & Goulette, 2017;Sheehan, Harrison, & Newman, 2012;Chan, Lichti, & Belton, 2015). We will call the first model-based registration methods and the second model-free methods.…”