NDLI: Asynchronous RTK precise DGNSS positioning method for deriving a low-latency high-rate output

Content Provider	Springer Nature Link
Author	Liang, Zhang Hanfeng, Lv Dingjie, Wang Yanqing, Hou Jie, Wu
Copyright Year	2015
Abstract	Low-latency high-rate ( $$>$$ 1 Hz) precise real-time kinematic (RTK) can be applied in high-speed scenarios such as aircraft automatic landing, precise agriculture and intelligent vehicle. The classic synchronous RTK (SRTK) precise differential GNSS (DGNSS) positioning technology, however, is not able to obtain a low-latency high-rate output for the rover receiver because of long data link transmission time delays (DLTTD) from the reference receiver. To overcome the long DLTTD, this paper proposes an asynchronous real-time kinematic (ARTK) method using asynchronous observations from two receivers. The asynchronous observation model (AOM) is developed based on undifferenced carrier phase observation equations of the two receivers at different epochs with short baseline. The ephemeris error and atmosphere delay are the possible main error sources on positioning accuracy in this model, and they are analyzed theoretically. In a short DLTTD and during a period of quiet ionosphere activity, the main error sources decreasing positioning accuracy are satellite orbital errors: the “inverted ephemeris error” and the integration of satellite velocity error which increase linearly along with DLTTD. The cycle slip of asynchronous double-differencing carrier phase is detected by TurboEdit method and repaired by the additional ambiguity parameter method. The AOM can deal with synchronous observation model (SOM) and achieve precise positioning solution with synchronous observations as well, since the SOM is only a specific case of AOM. The proposed method not only can reduce the cost of data collection and transmission, but can also support the mobile phone network data link transfer mode for the data of the reference receiver. This method can avoid data synchronizing process besides ambiguity initialization step, which is very convenient for real-time navigation of vehicles. The static and kinematic experiment results show that this method achieves 20 Hz or even higher rate output in real time. The ARTK positioning accuracy is better and more robust than the combination of phase difference over time (PDOT) and SRTK method at a high rate. The ARTK positioning accuracy is equivalent to SRTK solution when the DLTTD is 0.5 s, and centimeter level accuracy can be achieved even when DLTTD is 15 s.
Starting Page	641
Ending Page	653
Page Count	13
File Format	PDF
ISSN	09497714
Journal	Journal of Geodesy
Volume Number	89
Issue Number	7
e-ISSN	14321394
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-03-15
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Asynchronous RTK High accuracy High-rate Geophysics/Geodesy Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Geophysics Geochemistry and Petrology Computers in Earth Sciences

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

GLONASS ionosphere-free ambiguity resolution for precise point positioning

Assessment of correct fixing rate for precise point positioning ambiguity resolution on a global scale

Instantaneous BeiDou+GPS RTK positioning with high cut-off elevation angles

Triple-frequency GPS precise point positioning with rapid ambiguity resolution

Deploying a Locata network to enable precise positioning in urban canyons

High-rate precise point positioning (PPP) to measure seismic wave motions: an experimental comparison of GPS PPP with inertial measurement units

Accounting for Galileo–GPS inter-system biases in precise satellite positioning

Single-frequency, dual-GNSS versus dual-frequency, single-GNSS: a low-cost and high-grade receivers GPS-BDS RTK analysis

Ambiguity resolved precise point positioning with GPS and BeiDou

Asynchronous RTK precise DGNSS positioning method for deriving a low-latency high-rate output

Similar Documents

GLONASS ionosphere-free ambiguity resolution for precise point positioning

Assessment of correct fixing rate for precise point positioning ambiguity resolution on a global scale

Instantaneous BeiDou+GPS RTK positioning with high cut-off elevation angles

Triple-frequency GPS precise point positioning with rapid ambiguity resolution

Deploying a Locata network to enable precise positioning in urban canyons

High-rate precise point positioning (PPP) to measure seismic wave motions: an experimental comparison of GPS PPP with inertial measurement units

Accounting for Galileo–GPS inter-system biases in precise satellite positioning

Single-frequency, dual-GNSS versus dual-frequency, single-GNSS: a low-cost and high-grade receivers GPS-BDS RTK analysis

Ambiguity resolved precise point positioning with GPS and BeiDou

Asynchronous RTK precise DGNSS positioning method for deriving a low-latency high-rate output