Fast and reliable ambiguity resolution (AR) has been a continuing challenge for real-time precise positioning based on dual-frequency Global Navigation Satellite Systems (GNSS) carrier phase observation. New GNSS systems (i.e., GPS modernization, BDS (BeiDou Navigation Satellite System), GLONASS (Global Navigation Satellite System), and Galileo) will provide multiple-frequency signals. The GNSS...

Receivers able to track satellites belonging to different GNSSs (Global Navigation Satellite Systems) are available on the market. To compute coordinates and velocities it is necessary to identify all the elements that contribute to interoperability of the different GNSSs. For example the timescales kept by different GNSSs have to be aligned. Receiver-specific biases, or firmware-dependent bias...

In the differential equation system describes motion of GLONASS satellites (rus. Globalnaya Navigazionnaya Sputnikovaya Sistema, or Global Navigation Satellite System ), acceleration caused by luni-solar traction is often taken as a constant during period integration. this work-study, we assume that due to not but varies linearly integration following assumption; linear functions in three axes ...

Abstract An assessment of standalone GLONASS RTK performance is provided using its FDMA and CDMA signals. The new integer-estimable model (Teunissen 2019), which guarantees the integer-estimability ambiguities, employed. We introduce combined FDMA+CDMA compare strength against for instantaneous integer ambiguity resolution positioning. Various combinations signals are considered including L1, L...

Günümüzde tam kapasite ile konum belirleme hizmeti sunan dört Küresel Konum Belirleme Sistemi (GNSS) bulunmaktadır. Bunlar GPS, GLONASS, Galileo ve BeiDou’ dur. GPS GLONASS uzun yıllardır hizmet verirken, BeiDou son yıllarda dahil olmuştur. Bu çalışmada bu GNSS sisteminin 1. 2. temel frekanslarının doluluk durumu incelenmiştir. amaçla 05.06.2023 tarihine ait 322 IGS-MGEX istasyonlarına (bu tari...