TY - GEN
T1 - Performance Improvement and Assessment of NavIC Software Receiver
AU - Dey, Abhijit
AU - Singh, Prateek
AU - Sharma, Nitin
AU - Xu, Bing
AU - Hsu, Li Ta
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Existing global navigation satellite systems (GNSS) are being modernized, while new systems like BeiDou Navigation System (BDS) and Navigation with Indian Constellation (NavIC) have emerged. These systems should perform well in signal-constrained environments. Therefore, researchers must investigate how these systems work at intermediate levels to withstand adverse environmental conditions. The design and performance of these new modern systems can be investigated using a software receiver. This paper presents the implementation and performance assessment of a new MATLAB-based dual-frequency scalar and single-frequency (L5/S) vectorized NavIC software receiver. The designed software receiver can post-process NavIC L5 and S signals and provides full access to the base-band signal processing modules. Additionally, to improve receiver performance, grid-based and dual-frequency ionospheric corrections are implemented. An open-sky test in an equatorial low latitude region was carried to investigate the performance of the software receiver. The performance assessment is carried out for single-frequency scalar and vector-based solutions with and without ionospheric corrections and is then compared against dual-frequency solutions. For scalar, the experimental results showed an accuracy of 7 - 8m for L5, 11 -13m for S, 4 - 5m for dual-frequency, and 5 - 6m for the grid, while L5 and S vector-based solutions provided an accuracy of 4 - 4.5m and 7 - 8m, respectively.
AB - Existing global navigation satellite systems (GNSS) are being modernized, while new systems like BeiDou Navigation System (BDS) and Navigation with Indian Constellation (NavIC) have emerged. These systems should perform well in signal-constrained environments. Therefore, researchers must investigate how these systems work at intermediate levels to withstand adverse environmental conditions. The design and performance of these new modern systems can be investigated using a software receiver. This paper presents the implementation and performance assessment of a new MATLAB-based dual-frequency scalar and single-frequency (L5/S) vectorized NavIC software receiver. The designed software receiver can post-process NavIC L5 and S signals and provides full access to the base-band signal processing modules. Additionally, to improve receiver performance, grid-based and dual-frequency ionospheric corrections are implemented. An open-sky test in an equatorial low latitude region was carried to investigate the performance of the software receiver. The performance assessment is carried out for single-frequency scalar and vector-based solutions with and without ionospheric corrections and is then compared against dual-frequency solutions. For scalar, the experimental results showed an accuracy of 7 - 8m for L5, 11 -13m for S, 4 - 5m for dual-frequency, and 5 - 6m for the grid, while L5 and S vector-based solutions provided an accuracy of 4 - 4.5m and 7 - 8m, respectively.
KW - GNSS
KW - Ionospheric corrections
KW - NavIC
KW - Software receiver
KW - Vector tracking loop
UR - http://www.scopus.com/inward/record.url?scp=85171786092&partnerID=8YFLogxK
U2 - 10.1109/ANTS56424.2022.10227725
DO - 10.1109/ANTS56424.2022.10227725
M3 - Conference article published in proceeding or book
AN - SCOPUS:85171786092
T3 - International Symposium on Advanced Networks and Telecommunication Systems, ANTS
SP - 338
EP - 343
BT - 2022 IEEE International Conference on Advanced Networks and Telecommunications Systems, ANTS 2022
PB - IEEE Computer Society
T2 - 2022 IEEE International Conference on Advanced Networks and Telecommunications Systems, ANTS 2022
Y2 - 18 December 2022 through 21 December 2022
ER -