1. A detection system to detect an object, comprising: a radar system configured to transmit radiation and receive resulting reflections, the object being a distributed radar target reflecting multi-point reflections; an auxiliary sensor configured to estimate one or more parameters of the object; and a processor configured to identify the object by estimating a cluster of reflection points {circumflex over (Ω)} based on a maximum likelihood estimation given by: 
 {circumflex over (Ω)}=arg max Ω f ( Y |Ω,Λ), wherein Ω represents the cluster of reflection points, Λ represents the one or more parameters of the object estimated by the auxiliary sensor, and Y represents the multi-point reflections obtained by the radar system.