Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service

The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain...
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Autor*in:	Zhe Zhang [verfasserIn] Baoqi Sun [verfasserIn] Kan Wang [verfasserIn] Xiaohong Han [verfasserIn] Haiyan Yang [verfasserIn] Ge Wang [verfasserIn] Meifang Wu [verfasserIn] Yuanxin Wang [verfasserIn] Changjiang Geng [verfasserIn] Xuhai Yang [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	BDS-3 PPP-B2b real-time timing precise UTC dissemination

Übergeordnetes Werk:	In: Remote Sensing - MDPI AG, 2009, 16(2023), 1, p 43
Übergeordnetes Werk:	volume:16 ; year:2023 ; number:1, p 43

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/rs16010043

Katalog-ID:	DOAJ097773808

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allfields	10.3390/rs16010043 doi (DE-627)DOAJ097773808 (DE-599)DOAJ61b941e7e8584e9fbe223b6135403409 DE-627 ger DE-627 rakwb eng Zhe Zhang verfasserin aut Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service. BDS-3 PPP-B2b real-time timing precise UTC dissemination Science Q Baoqi Sun verfasserin aut Kan Wang verfasserin aut Xiaohong Han verfasserin aut Haiyan Yang verfasserin aut Ge Wang verfasserin aut Meifang Wu verfasserin aut Yuanxin Wang verfasserin aut Changjiang Geng verfasserin aut Xuhai Yang verfasserin aut In Remote Sensing MDPI AG, 2009 16(2023), 1, p 43 (DE-627)608937916 (DE-600)2513863-7 20724292 nnns volume:16 year:2023 number:1, p 43 https://doi.org/10.3390/rs16010043 kostenfrei https://doaj.org/article/61b941e7e8584e9fbe223b6135403409 kostenfrei https://www.mdpi.com/2072-4292/16/1/43 kostenfrei https://doaj.org/toc/2072-4292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 16 2023 1, p 43
spelling	10.3390/rs16010043 doi (DE-627)DOAJ097773808 (DE-599)DOAJ61b941e7e8584e9fbe223b6135403409 DE-627 ger DE-627 rakwb eng Zhe Zhang verfasserin aut Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service. BDS-3 PPP-B2b real-time timing precise UTC dissemination Science Q Baoqi Sun verfasserin aut Kan Wang verfasserin aut Xiaohong Han verfasserin aut Haiyan Yang verfasserin aut Ge Wang verfasserin aut Meifang Wu verfasserin aut Yuanxin Wang verfasserin aut Changjiang Geng verfasserin aut Xuhai Yang verfasserin aut In Remote Sensing MDPI AG, 2009 16(2023), 1, p 43 (DE-627)608937916 (DE-600)2513863-7 20724292 nnns volume:16 year:2023 number:1, p 43 https://doi.org/10.3390/rs16010043 kostenfrei https://doaj.org/article/61b941e7e8584e9fbe223b6135403409 kostenfrei https://www.mdpi.com/2072-4292/16/1/43 kostenfrei https://doaj.org/toc/2072-4292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 16 2023 1, p 43
allfields_unstemmed	10.3390/rs16010043 doi (DE-627)DOAJ097773808 (DE-599)DOAJ61b941e7e8584e9fbe223b6135403409 DE-627 ger DE-627 rakwb eng Zhe Zhang verfasserin aut Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service. BDS-3 PPP-B2b real-time timing precise UTC dissemination Science Q Baoqi Sun verfasserin aut Kan Wang verfasserin aut Xiaohong Han verfasserin aut Haiyan Yang verfasserin aut Ge Wang verfasserin aut Meifang Wu verfasserin aut Yuanxin Wang verfasserin aut Changjiang Geng verfasserin aut Xuhai Yang verfasserin aut In Remote Sensing MDPI AG, 2009 16(2023), 1, p 43 (DE-627)608937916 (DE-600)2513863-7 20724292 nnns volume:16 year:2023 number:1, p 43 https://doi.org/10.3390/rs16010043 kostenfrei https://doaj.org/article/61b941e7e8584e9fbe223b6135403409 kostenfrei https://www.mdpi.com/2072-4292/16/1/43 kostenfrei https://doaj.org/toc/2072-4292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 16 2023 1, p 43
allfieldsGer	10.3390/rs16010043 doi (DE-627)DOAJ097773808 (DE-599)DOAJ61b941e7e8584e9fbe223b6135403409 DE-627 ger DE-627 rakwb eng Zhe Zhang verfasserin aut Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service. BDS-3 PPP-B2b real-time timing precise UTC dissemination Science Q Baoqi Sun verfasserin aut Kan Wang verfasserin aut Xiaohong Han verfasserin aut Haiyan Yang verfasserin aut Ge Wang verfasserin aut Meifang Wu verfasserin aut Yuanxin Wang verfasserin aut Changjiang Geng verfasserin aut Xuhai Yang verfasserin aut In Remote Sensing MDPI AG, 2009 16(2023), 1, p 43 (DE-627)608937916 (DE-600)2513863-7 20724292 nnns volume:16 year:2023 number:1, p 43 https://doi.org/10.3390/rs16010043 kostenfrei https://doaj.org/article/61b941e7e8584e9fbe223b6135403409 kostenfrei https://www.mdpi.com/2072-4292/16/1/43 kostenfrei https://doaj.org/toc/2072-4292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 16 2023 1, p 43
allfieldsSound	10.3390/rs16010043 doi (DE-627)DOAJ097773808 (DE-599)DOAJ61b941e7e8584e9fbe223b6135403409 DE-627 ger DE-627 rakwb eng Zhe Zhang verfasserin aut Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service. BDS-3 PPP-B2b real-time timing precise UTC dissemination Science Q Baoqi Sun verfasserin aut Kan Wang verfasserin aut Xiaohong Han verfasserin aut Haiyan Yang verfasserin aut Ge Wang verfasserin aut Meifang Wu verfasserin aut Yuanxin Wang verfasserin aut Changjiang Geng verfasserin aut Xuhai Yang verfasserin aut In Remote Sensing MDPI AG, 2009 16(2023), 1, p 43 (DE-627)608937916 (DE-600)2513863-7 20724292 nnns volume:16 year:2023 number:1, p 43 https://doi.org/10.3390/rs16010043 kostenfrei https://doaj.org/article/61b941e7e8584e9fbe223b6135403409 kostenfrei https://www.mdpi.com/2072-4292/16/1/43 kostenfrei https://doaj.org/toc/2072-4292 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2108 GBV_ILN_2111 GBV_ILN_2119 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4392 GBV_ILN_4700 AR 16 2023 1, p 43
language	English
source	In Remote Sensing 16(2023), 1, p 43 volume:16 year:2023 number:1, p 43
sourceStr	In Remote Sensing 16(2023), 1, p 43 volume:16 year:2023 number:1, p 43
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	BDS-3 PPP-B2b real-time timing precise UTC dissemination Science Q
isfreeaccess_bool	true
container_title	Remote Sensing
authorswithroles_txt_mv	Zhe Zhang @@aut@@ Baoqi Sun @@aut@@ Kan Wang @@aut@@ Xiaohong Han @@aut@@ Haiyan Yang @@aut@@ Ge Wang @@aut@@ Meifang Wu @@aut@@ Yuanxin Wang @@aut@@ Changjiang Geng @@aut@@ Xuhai Yang @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	608937916
id	DOAJ097773808
language_de	englisch
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author	Zhe Zhang
spellingShingle	Zhe Zhang misc BDS-3 misc PPP-B2b misc real-time misc timing misc precise UTC dissemination misc Science misc Q Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service
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topic_title	Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service BDS-3 PPP-B2b real-time timing precise UTC dissemination
topic	misc BDS-3 misc PPP-B2b misc real-time misc timing misc precise UTC dissemination misc Science misc Q
topic_unstemmed	misc BDS-3 misc PPP-B2b misc real-time misc timing misc precise UTC dissemination misc Science misc Q
topic_browse	misc BDS-3 misc PPP-B2b misc real-time misc timing misc precise UTC dissemination misc Science misc Q
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title	Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service
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title_full	Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service
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author_browse	Zhe Zhang Baoqi Sun Kan Wang Xiaohong Han Haiyan Yang Ge Wang Meifang Wu Yuanxin Wang Changjiang Geng Xuhai Yang
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author-letter	Zhe Zhang
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title_sort	sub-nanosecond utc dissemination based on bds-3 ppp-b2b service
title_auth	Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service
abstract	The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service.
abstractGer	The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service.
abstract_unstemmed	The BeiDou-3 system (BDS-3) broadcasts PPP-B2b signals to provide real-time PPP service. Compared with the traditional PPP technique, the PPP-B2b service broadcasts corrections through satellite links, covers a wide area, and is independent of the internet. With the PPP-B2b service, users can obtain high-precision positioning information through the real-time PPP. Many studies have been conducted to evaluate the positioning performance of PPP-B2b. In theory, high-precision timing information could also be obtained through PPP-B2b. With the development of science and technology, the need for highly accurate time measurement, even at the sub-nanosecond level, is experiencing significant growth. However, the GNSS standard timing service can hardly meet these requirements. This contribution analyzes the timing performance of the PPP-B2b service and proposes a sub-nanosecond precise timing method of Coordinated Universal Time (UTC) based on the PPP-B2b service. BDS-3 and GPS observations from nine tracking stations and real-time collected PPP-B2b corrections over 516 days were used to analyze the performance of the proposed timing method. The results show that: (1) The difference between the PPP-B2b-restored UTC, which was realized by one-way timing with the UTC offsets in broadcast ephemeris, and UTC (NTSC), fluctuates within a few ns. (2) The timing uncertainty of the zero baseline based on the proposed method is better than 0.2 ns. (3) Compared with the post-processed PPP time transfer, the UTC dissemination uncertainty of the short and long baseline with the proposed method is better than 0.7 ns. The experiment results verified the feasibility of the proposed sub-nanosecond level precise UTC dissemination method based on the PPP-B2b service.
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title_short	Sub-Nanosecond UTC Dissemination Based on BDS-3 PPP-B2b Service
url	https://doi.org/10.3390/rs16010043 https://doaj.org/article/61b941e7e8584e9fbe223b6135403409 https://www.mdpi.com/2072-4292/16/1/43 https://doaj.org/toc/2072-4292
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score	7.4014044

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