Results 241 to 250 of about 425,883 (279)
Some of the next articles are maybe not open access.
Timing group delay and differential code bias corrections for BeiDou positioning
Journal of Geodesy, 2015This article first clearly figures out the relationship between parameters of timing group delay (TGD) and differential code bias (DCB) for BDS, and demonstrates the equivalence of TGD and DCB correction models combining theory with practice. The TGD/DCB correction models have been extended to various occasions for BDS positioning, and such models have
Fei Guo, Xiaohong Zhang, Jinling Wang
openaire +3 more sources
Determination of the Differential Code Bias for Current BDS Satellites
IEEE Transactions on Geoscience and Remote Sensing, 2014The differential code bias (DCB) in global navigation satellite system (GNSS) satellites should be precisely determined using real ground GNSS data when designing certain applications, such as ionospheric remote sensing, precise positioning, and timing.
Zishen Li +4 more
openaire +3 more sources
Satellite Differential Code Bias Estimated Using EGYNET: A Local Egyptian Permanent Network
Instrumentation Mesure Métrologie, 2020This paper proposes to determine the GPS satellites DCB using nine GPS receivers located in the middle of Egypt. During four seasons and 36 days characterized by quiet geomagnetism, the performance of the proposed method is examined. The dual GPS data selected is used and applied to the GPS receiver chain notes.
Mohammed A. Abid, Ashraf Mousa
openaire +1 more source
Secular Changes in Differential Code Bias of COMPASS System
2012Differential Code Bias (DCB), named Timing Group Delay (TGD) for satellite and Inter-Frequency Bias (IFB) for receiver, is a crucial parameter in COMPASS system, which is needed in satellite clock correction and ionospheric delay modeling. Though DCB parameters were measured in laboratory initially, it may change with working environment as well as ...
Nan Xing +3 more
openaire +1 more source
GPS satellite differential code bias estimation with current eleven low earth orbit satellites
Journal of Geodesy, 2021Many low earth orbit (LEO) missions have been launched recently for different geoscience studying purposes such as ionosphere detecting and gravity recovering. The onboard observations from LEO satellites provide us a great opportunity to estimate the differential code bias (DCB) which is vital for precise applications of global navigation satellites ...
Xingxing Li +7 more
openaire +1 more source
Refining of BDS Differential Code Bias Model
2015The differential code bias (DCB) in Global Navigation Satellite System (GNSS) satellites should be precisely determined using real ground GNSS data when designing certain applications, such as precise positioning, navigation and timing. This paper analyzed the relationship between satellite elevation angle with DSNR (difference signal to noise ratio ...
Qiankun Liu +5 more
openaire +1 more source
Repeatability Investigation of BeiDou Receiver Differential Code Bias
2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018Currently, the Chinese BeiDou satellite system is extensively used in ionosphere modeling and space weather applications. For precise ionosphere modeling, however, the differential code bias (DCB) for both the satellite and receiver must be accounted for. The objective of this paper is to investigate the repeatability of the BeiDou receiver DCB.
openaire +1 more source
Estimation of Differential Code Bias of IRNSS Satellites using Global Ionosphere Map
INCOSE International Symposium, 2019AbstractIRNSS (Indian Regional Navigation Satellite System) is an independent satellite based regional navigation system, developed by India, with an aim to provide accurate positioning and timing services to user in India as well as 1500 km away from its boundary.
Yogesh Lingwal +3 more
openaire +1 more source
Ionospheric Mapping in Indian Region and Differential Code Bias Estimation from NaVIC Observations
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science, 2020IGS (International GNSS Services) provides the Differential Code Bias (DCB) of different navigation system like GPS, GLONASS and other. Currently the knowledge of NaVIC DCB is not available due to the limited number of Reference station. During the initial phase of NaVIC a method was explored where the DCB of NaVIC satellites was computed using Global ...
Yogesh Lingwal +2 more
openaire +1 more source
The analysis of Differential Code Bias of BeiDou satellite navigation system
2014 IEEE International Frequency Control Symposium (FCS), 2014In order to eliminate the effects of ionospheric delay, navigation satellites usually launch multiple frequency navigation signals, such as BeiDou satellite navigation system which launches three frequency point signals of B1, B2 and B3. Because of the differences of each frequency channel of satellite which transmit navigation signals, the hardware ...
Liu Yinhua +4 more
openaire +1 more source