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

Reliable Carrier Phase Positioning

Preface Currently, the Global Navigation Satellite Systems (GNSS) GPS and GLONASS are modernized and new GNSS such as Galileo and Compass are developed. The modernization of GPS includes an additional signal on L5 which lies in an aeronautical band. This will enable a dual frequency positioning on board an aircraft and an elimination of the dispersive ionospheric delay, which is one of the larg...

Relative Positioning with RTK Filtering and PPP FILLING THE GAPS

Spatial distortions induced by dotted patterns.

Prolonged steady fixation of parallel, radial, or concentric lines positioned close to each other generates phenomena of illusory oscillation, waving, and shimmering. Purkinje reported a first observation of these phenomena almost two centuries ago (review by Wade, 1977 Perception 6 407-433). Here we show that illusory waving and oscillation phenomena arise at first glance when dotted lines are...

Characteristics of the BDS Carrier Phase Multipath and Its Mitigation Methods in Relative Positioning

The carrier phase multipath effect is one of the most significant error sources in the precise positioning of BeiDou Navigation Satellite System (BDS). We analyzed the characteristics of BDS multipath, and found the multipath errors of geostationary earth orbit (GEO) satellite signals are systematic, whereas those of inclined geosynchronous orbit (IGSO) or medium earth orbit (MEO) satellites ar...

Generic nanomaterial positioning by carrier and stationary phase design.

A generic approach for deploying various types of synthetic nanomaterials, including single-walled carbon nanotubes and nanoparticles, at well-defined locations on substrates is presented. The assembly is achieved through the complementary design of the stationary and carrier phases and utilizes the dewetting process during which polymer-encapsulated nanomaterials are delivered and positioned o...