Doppler-only tracking with the recursive Gauss-Newton filter

This paper investigates target tracking using Doppler only, observed from multiple receivers in a multi-static configuration. The tracking filter selected for this study is the recursive Gauss-Newton filter based on the Levenberg-Marquardt method. FM Band Commensal Radar (radar that uses another system´s EM emissions) produces a Range versus Doppler plot, where the Doppler resolution is very precise due to the long integration time, but range resolution is at best poor due to the narrow broadcast channel bandwidth. Thus, tracking that relies mostly on Doppler seems most sensible for this type of radar.