NDLI: Research on a chip scale atomic clock driven GNSS/SINS deeply coupled navigation system for augmented performance

Content Provider	IET Digital Library
Author	Jiang, Changhui Chen, Shuai Chen, Yuwei Bo, Yuming
Abstract	Chip scale atomic clock (CSAC) is a recently developed low-profile atomic frequency reference device. Researchers have demonstrated CSAC was able to improve the accuracy of Global navigation satellite system (GNSS) receiver positioning results. However, the work was conducted using scalar tracking loops (STL). It is meaningful to investigate CSAC augmented vector tracking loop (VTL), since the VTL has different architecture with STL. Thus, in this paper, the authors investigated a CSAC driven VTL_DI system for exploring CASC impact on VTL. Firstly, the authors explored 1) whether VTL_DI could operate without regarding clock offset and drifts as VTL_DI integration filter state variables, and 2) whether VTL_DI could provide reliable position with only three satellites in view. Secondly, side-by-side comparative field tests were conducted to evaluate performance improvement: by solution A: VTL_DI supported by CSAC and solution B: a temperature compensated crystal oscillator (TXCO) with more than four satellites and three satellites in view scenarios. It was discovered that the CSAC could enhance the position performance, even if amount of satellites were fewer than four in view. However, VTL_DI system could not guarantee its positioning accuracy without clock offset as state variable, which was different from STL_DI system.
Starting Page	326
Ending Page	331
Page Count	6
ISSN	17518784
Volume Number	13
e-ISSN	17518792
Issue Number	Issue 2, Feb (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/13/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2018.5152
Journal	IET Radar, Sonar & Navigation
Publisher Date	2018-10-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Atom Excitation Technique Atomic Clocks Augmented Performance Chip Scale Atomic Clock Complete Signal Tracking Crystal Oscillators CSAC Driven VTL_DI System Deep Integrated Navigation System Deeply Coupled Navigation System Inertial Navigation System Inertial System Local Signal Replica Generation Loop Tracking Parameter Low-power Consumption Low-profile Atomic Frequency Reference Device Microelectromechanical System Technique Navigation Solutions Determination Phase Locked Loop Portable Global Navigation Satellite System Receiver Position Performance Radio Navigation And Direction Finding Satellite Communication System Satellite Navigation Scalar Tracking Loop-based GNSS Receiver Signal Tracking Operation Single Navigation Filter State Variable STL-based GNSS/strapdown Inertial Navigation System STL_DI System Vector Tracking Loop-based GNSS/SINS Deep Integration System VTL Architecture VTL_DI Integration Filter State Variables
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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

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