Data Quality Check and Visual Analysis of Cors Station Based on Anubis Software

Abstract

Abstract. Aiming at the observation data of CORS multi-mode data quality and inspection in CORS station, based on the observation data of a CORS station in Guilin, Guangxi, the paper used TEQC and Anubis software to check the data quality from data utilization, cycle slip ratio and multipath. The results show that the three quality inspection indicators of Anubis software are better than TEQC software, which proves that Anubis' data quality inspection results are effective and reliable. On this basis, using Anubis drawing tools to perform quality inspection and visual analysis from satellite constellation, signal band and observation data itself, it shows that Anubis' visual content is more elaborate than TEQC, and users can more intuitively understand and control the data quality of CORS station.

Analysis of the Current Dynamic of the Jalisco Block, Mexico through GNSS Observations

“…The stations used for our study presented effectiveness values greater than 95% in their entirety, likewise, the SNR values turned out to be greater than 30 dBHz for all the stations, which reflects the quality of the signal (according with IGS recommendations (https://igs.org/station-resources/#site-guidelines, accessed on 25 October 2020) and [15]). However, most of the stations present an average multipath value of 0.5 m in MP1 and 0.4 m in MP2 (with values close to those recommended) (Table 1).…”

“…For this, various parameters such as precise ephemeris (SP3), orientation parameters of the earth, ocean charge model, among others, were used. Likewise, the North American plate was used as a reference since according to [14], the movements of the GPS sites in Jalisco are better described in relation to this plate than with a global reference frame, since the speeds of the reference site are minimized [15]; thus, the displacements are obtained purely from the phenomenon in question. The Tsview tool, by Thomas Herring, United States of America, complemented the GAMIT/GLOB-K software for GPS time series analysis [16].…”

Positioning Evaluation of Single and Dual-Frequency Low-Cost GNSS Receivers Signals Using PPP and Static Relative Methods in Urban Areas

“…The integrity (INT) is theoretically calculated considering the complete observations, and the recommended value is >95% [1]. Cycle slips were calculated from the carrier phase as per the relationship CSR = 1000/(o/slps) [40,41]; where "o/slps" is the number of observations between cycle slips. Theoretically, the recommended value must be less than 1 per 1000 observations [42].…”