NDLI: Data smoothing algorithm

Content Provider	IEEE Xplore Digital Library
Author	Van Kley, E.R.
Copyright Year	1994
Description	Author affiliation: Comput. Sci., Raytheon Co., Patrick AFB, FL, USA (Van Kley, E.R.)
Abstract	The paper describes the development of an algorithm for smoothing ship attitude angle data and the use of a spreadsheet for developing and evaluating the performance of the algorithm. The specific project involved the integration of global positioning system (GPS) (AN/WRN-6) to a ships attitude measurement system (SAMS) on board the USNS Observation Island. The SAMS its an inertial navigation system (INS) or more specific, a modified AN/WSN-5. The data output from the SAMS is used by the ship's radar tracking computer to predict a pointing angle and to drive the radar mount pointing angle to the desired object being tracked. Noise on the angle data will propagate through the track computation and will result in mount servo drive errors to compromise the radar's performance. The stabilization angle data output from the SAMS (level, crosslevel, and azimuth) is considerably better than the specification, but not as good as the existing source of data which was used in the development of the tracking computation. It describes the development of the data smoothing algorithm using what is known about the frequency and amplitude of the noise and ship's motion. The algorithm uses the current data point and previous data as required to predict a current smoothed data point in real time for the radar tracking computation. It also describes how a spreadsheet is used to first characterize the data signal and noise using the statistical and plotting tools available in a spreadsheet program. Secondly, it describes the use of the spreadsheet in development of a simulator which is used to characterize the performance of the data smoothing algorithm. The advantage of this is that it is not necessary to use a ship to exercise every possible condition.
Starting Page	323
Ending Page	328
File Size	434078
Page Count	6
File Format	PDF
ISBN	0780314352
DOI	10.1109/PLANS.1994.303330
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-04-11
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Smoothing methods Radar tracking Marine vehicles Global Positioning System Position measurement Inertial navigation Drives Servomechanisms Computer errors Azimuth
Content Type	Text
Resource Type	Article

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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