Assessment of dual frequency GNSS observations from a Xiaomi Mi 8 Android smartphone and positioning performance analysis

U Robustelli, V Baiocchi, G Pugliano - Electronics, 2019 - mdpi.com
On May 2018 the world's first dual-frequency Global Navigation Satellite System (GNSS)
smartphone produced by Xiaomi equipped with a Broadcom BCM47755 chip was launched …

Estimation of snow depth using pseudorange and carrier phase observations of GNSS single-frequency signal

Y Li, X Chang, K Yu, S Wang, J Li - GPS Solutions, 2019 - Springer
A new method is proposed to estimate snow depth by using observations of the GNSS
single-frequency signal collected by a ground-based receiver. The proposed method utilizes …

A new multipath mitigation method based on adaptive thresholding wavelet denoising and double reference shift strategy

M Su, J Zheng, Y Yang, Q Wu - Gps Solutions, 2018 - Springer
Multipath disturbance is one of the major error sources in high-accuracy positioning for
global navigation satellite system (GNSS). Although various methods based on software and …

Code and phase multipath mitigation by using the observation-domain parameterization and its application in five-frequency GNSS ambiguity resolution

Z Zhang - GPS Solutions, 2021 - Springer
In multi-frequency and multi-constellation GNSS applications, the multi-frequency carrier
ambiguity resolution (MCAR) is the prerequisite of high-precision positioning and …

Analysis of the impact of multipath on Galileo system measurements

D Prochniewicz, M Grzymala - Remote Sensing, 2021 - mdpi.com
Multipath is one of the major source of errors in precise Global Navigation Satellite System
positioning. With the emergence of new navigation systems, such as Galileo, upgraded …

A procedure for the significance testing of unmodeled errors in GNSS observations

B Li, Z Zhang, Y Shen, L Yang - Journal of geodesy, 2018 - Springer
It is a crucial task to establish a precise mathematical model for global navigation satellite
system (GNSS) observations in precise positioning. Due to the spatiotemporal complexity of …

An in-depth assessment of the new BDS-3 B1C and B2a signals

Q Zhang, Y Zhu, Z Chen - Remote Sensing, 2021 - mdpi.com
An in-depth and comprehensive assessment of new observations from BDS-3 satellites is
presented, with the main focus on the Carrier-to-Noise density ratio (C/N0), the quality of …

Multipath extraction and mitigation for bridge deformation monitoring using a single-difference model

D Wang, X Meng, C Gao, S Pan, Q Chen - Advances in Space Research, 2017 - Elsevier
Multipath is one of the primary error sources in high precision GNSS applications. Since it is
highly correlated with observation environments, the multipath effect is difficult to be …

Code multipath error extraction based on the wavelet and empirical mode decomposition for Android smart devices

W Li, X Zhu, Z Chen, Z Dai, J Li, C Ran - GPS Solutions, 2021 - Springer
The multipath effect inhibits the centimeter-accuracy positioning in Android smart devices
which have poor multipath suppression. We investigate the multipath extraction …

GNSS-R snow depth retrieval algorithm based on PSO-LSTM

Y Hu, W Qu, W Liu, X Yuan - Measurement Science and …, 2024 - iopscience.iop.org
The global navigation satellite system (GNSS)-interferometric reflectometry technique has
been applied to retrieve snow depth, which has a high potential for application. The GNSS …