NDLI: Incremental benefits of dual frequency signals for the Wide Area Augmentation System

Content Provider	IEEE Xplore Digital Library
Author	Schempp, T. Peck, S.
Copyright Year	2010
Description	Author affiliation: Raytheon, Fullerton, California, USA (Schempp, T.; Peck, S.)
Abstract	Satellite Based Augmentation Systems (SBAS) have been implemented in the United States, Europe, and Japan and one is soon to be deployed in India as well. Today, SBAS systems utilize dual frequency L1-CA/L2 semi-codeless measurements to provide precise corrections and integrity bounds to aircraft for use in both enroute and precision approach operations. In contrast to the ground system, the aircraft are limited to the sole use of L1-CA measurements since the L2 frequency does not lie in a protected Aeronautical Radio Navigation Service (ARNS) frequency band. The single biggest source of error in an SBAS position solution and the limiting factor in system performance is the ionospheric corrections. Using two frequencies, the ground system is capable of creating corrections for ionospheric delays although the uncertainty bounds associated with these corrections must be inflated to account for the unpredictable effects of ionospheric storms. With the addition of the L5 signal in block IIF and block III GPS satellites, aviation receivers will be able to correct for ionospheric delay without SBAS corrections drastically improving availability of precision approach operations. Although clear benefits have been shown in the end state, a full constellation of L5 capable GPS satellites will not be available until 2018. This paper quantifies the availability and continuity benefits of utilizing the L5 signal from a partial constellation of GPS IIF and GPS III satellites.
Starting Page	645
Ending Page	653
File Size	422680
Page Count	9
File Format	PDF
ISBN	9781424450367
ISSN	21533598
DOI	10.1109/PLANS.2010.5507217
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellite broadcasting Global Positioning System Frequency measurement Aircraft navigation Europe Protection Radio navigation Error correction System performance Delay effects L5 WAAS SBAS Augmentation Dual Frequency
Content Type	Text
Resource Type	Article

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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
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