A new Decoupled Unbiased Converted Measurement Adaptive alpha-beta Filter developed for target tracking

Tracking a target in a Cartesian repair with polar radar measurements usually involves transformation of the measurements from a polar coordinate frame to a Cartesian coordinate one. In a large cross-range target tracking, the classical conversion method becomes inconsistent and is therefore inadequate. In this paper we propose a new decoupled tracking filter that uses Unbiased Converted Measurements within an adaptive αβ filter. The proposed filter, named the Decoupled Unbiased Converted Measurements Adaptive αβ Filter (UCMAαβF), while having a performance similar to that of the Unbiased Converted Measurements Kalman Filter (UCMKF), has the advantage to be simpler to implement for real time applications.