[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.11003/JPNT.2018.7.4.205

A-GNSS Performance Test in Various Urban Environments by Using a Commercial Low Cost GNSS Receiver and Service

Han, Kahee (Department of Electrical Engineering, Inha University)
Lee, Jung-Hoon (Department of Electrical Engineering, Inha University)
Im, Ji-Ung (Department of Future Vehicle Engineering, Inha University)
Won, Jong-Hoon (Department of Electrical Engineering, Inha University)

Publication Information

Journal of Positioning, Navigation, and Timing / v.7, no.4, 2018 , pp. 205-215 More about this Journal

Abstract

The recent emergence of new Global Navigation Satellite Systems (GNSS) has resulted in a gradual improvement in the performance of positioning services. This paper verifies the degree of improvement in positioning performance of Assisted-GNSS (A-GNSS) receivers using assistance information compared to standalone-GNSS receivers that do not use assistance information in various urban environments in Korea. For this purpose, field tests are performed in various urban and indoor environments in Korea. The assistance information is provided by u-blox's AssistNow Online and low-cost commercial receivers are used for mobile station receivers. Through experiments, the Time to First Fix (TTFF), acquisition sensitivity, and position accuracy performance improvement are analyzed. The results of the experiments show that using assistance data improved the performance in all experiment locations, and, in particular, a significant performance improvement in terms of TTFF.

Keywords

navigation; positioning; A-GPS/A-GNSS; navigation performance;

Citations & Related Records

Reference

1	ECC 2016, Establishing Criteria for the Accuracy and Reliability of the Caller Location Information in support of Emergency Services, Report 225.
2	FCC 2015, In the Matter of Wireless E911 Location Accuracy Requirements, PS Docket No. 07-114, Washington D.C.
3	Kaplan, E. D. & Hegarty, C. J. 2006, Understanding GPS: Principles and Applications, 2nd ed. (Boston: Artech House Inc.)
4	Karunanayake, M. D., Cannon, M. E., & Lachapelle, G. 2007, Analysis of assistance data on AGPS performance, Measurement Science and Technology, 18, 1908-1916. DOI
5	Korea Transportation Safety Authority 2016, Emergency Rescue System e-Call, TS magazine, October 2016, [internet], cited 2018 Nov 1, available from: http://ts.ecatalog.kr/src/viewer/main.php?host=main&site=20161002_142301_3
6	Lopez, J. M. L., Aguilar, F. L., & Abascal, J. J. C. 2012, A-GPS performance in urban areas, Mobile Multimedia Communications: 6th International ICST Conference, MOBIMEDIA 2010, Lisbon, Portugal, September 6-8, 2010. Revised Selected Papers, eds. Rodriguez, J., Tafazolli, R., Verikoukis, C. (Berlin, Heidelberg: Springer), pp.413-422.
7	Person, J. 2008, Writing your own gps applications: Part 2, Developer Fusion, [internet], cited 2018 Nov 1, available from: https://www.developerfusion.com/article/4652/writing-your-own-gps-applications-part-2/2/.
8	Rohde & Schwarz 2018a, Verification of next generation eCall functionality in an IVS, Application Card, Ver. 01.00, [internet], cited 2018 Nov 1, available from: https://cdn.rohde-schwarz.com/pws/dl_downloads/dl_application/pdfs/Verification_of_Next_Generation_eCall_functionality_of_an_IVS_ac_5215-9683_v0100.pdf
9	Rohde & Schwarz 2018b, Test your eCall and ERA-Glonass system modules, Application Card, Ver. 04.00, [internet], cited 2018 Nov 1, https://cdn.rohde-schwarz.com/pws/dl_downloads/dl_application/pdfs/SMBV100A_CMW500_Test_ac_en_5214-5532-92_v0400.pdf
10	Singh, S. 2006, Comparison of assisted GPS (AGPS) performance using simulator and field tests, In Proceedings of the ION GNSS Conference, 26-29 September, Fort Worth, Texas, USA, pp.1-12.
11	TTA 2016b, Positioning system for Public Safety Stage 4: Test Requirements, TTAK.KO-06.0435, TTA, Seongnam, Korea (in Korean with English abstract)
12	The European Parliament and the Council of the European Union 2015, Regulation (EU) 2015/758 of the European Parliament and of the Council concerning typeapproval requirements for the deployment of the eCall in-vehicle system based on the 112 service and amending directive 2007/46/EC, Official Journal of the European Union, 123, 77-89.
13	TTA 2015, Positioning system for Public Safety Stage 2: Architecture, TTAK.KO-06.0401-Part2, TTA, Seongnam, Korea (in Korean with English abstract)
14	TTA 2016a, Positioning system for Public Safety Stage 3: Interfaces, TTAK.KO-06.0434, TTA, Seongnam, Korea (in Korean with English abstract)
15	TTA 2017a, Positioning system for Public Safety Stage 1: Requirement, TTAK.KO-06.0401-Part1/R1, TTA, Seongnam, Korea (in Korean with English abstract)
16	TTA 2017b, Positioning system for Public Safety Stage 5: Test Procedure, TTAK.KO-06.0401-Part5, TTA, Seongnam, Korea (in Korean with English abstract)
17	Ublox 2015, NEO/LEA-M8T u-blox M8 concurrent GNSS timing modules data sheet, UBX-14006196-R06. https://www.u-blox.com/sites/default/files/NEO-LEA-M8T_DataSheet_(UBX-14006196).pdf
18	U.S. Coast Guard 1996, NAVSTAR GPS User equipment introduction, Public Release Version.
19	Weil, L. R. 2011, Difference Between Signal Acquisition and Tracking, Inside GNSS, 6, 22-27.
20	Won, J.-H., Eissfeller, B., Lankl, B., Schmitz-Peiffer, A., & Colzi, E. 2008, C-Band User Terminal Concepts and Acquisition Performance Analysis for European GNSS Evolution Programme, Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, Sep 16-19 2008, pp.940-951.
21	van Diggelen, F. S. T. 2009, A-GPS: Assisted GPS, GNSS, and SBAS (Boston: Artech House)