Mitigation of Carrier Phase Distortions Induced by Spatial Filtering using Antenna Arrays

Enabling RTK Positioning Under Jamming: Mitigation of Carrier-Phase Distortions Induced by Blind Spatial Filtering

“…The proposed paper will extend the research from Bamberg and Meurer (2019) and Bamberg et al (2020) to practical experiments with recorded real-world signals using an RTK positioning algorithm. The analysis in the cited research was focused on the carrier-phase offset induced by adaptive spatial filtering on the signal level.…”

“…The stability of carrier-phase measurements beyond short time periods is problematic. Further research indicates that approaches adopting this strategy, in general, cannot preserve the continuity of the phase over long time simulations (Bamberg et al, 2020). The second strategy is based on using additional constraints to the spatial filter to avoid phase errors.…”

“…The limitations of the state-of-the-art techniques mentioned above motivated the research reported by Bamberg and Meurer (2019) and Bamberg et al (2020). Bamberg et al (2020) evaluated the induced carrier-phase error for four different implementations of a spatial filter.…”

“…The limitations of the state-of-the-art techniques mentioned above motivated the research reported by Bamberg and Meurer (2019) and Bamberg et al (2020). Bamberg et al (2020) evaluated the induced carrier-phase error for four different implementations of a spatial filter. The analysis was conducted in three different scenarios to characterize the error in the absence (as well as in the presence) of a jamming signal.…”

“…Nevertheless, with these approaches, PPP/RTK still remains a challenge in fast-changing environments. Bamberg et al (2020) used these results to create two new blind approaches to reduce the carrier-phase error of spatial filtering. The key idea of these approaches is to reduce the bias in the tracked carrier phase by comparing the mean phase of the applied beamformer either with the previous beamformer or with the beamformer of the aforementioned approach that is known to have little impact on the phase.…”