Abstract
This study explores the feasibility of using single-frequency (SF) receivers to achieve Zenith Total Delay (ZTD) retrievals with existing reference stations via the Satellite-specific Epoch-differenced Ionospheric delay (SEID) model. Over 30 days, data from a low-cost SF receiver was collected under varying ionospheric conditions. Two reference network configurations were tested: scheme 1 with an average inter-station distance of 138 km and scheme 2 with a distance of 431 km. The GPS-only solution exhibited Root Mean Square (RMS) of 4.2 mm and 11.3 mm for schemes 1 and 2, respectively. Incorporating GLONASS data had minimal impact on scheme 1 but increased the mean bias in scheme 2, likely due to residual ionospheric delays over the larger area. ZTD estimates from reanalysis products fell between those of the two schemes. This study demonstrates the viability of cost-effective, single-frequency receivers for precise ZTD estimation, advocating for network expansion through additional low-cost receivers.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
