NDLI: Coherent side-band BOC processing

Content Provider	IET Digital Library
Author	Borio, Daniele
Abstract	Binary offset carrier (BOC) modulated signals are characterised by multi-peaked correlation functions which may lead to false peak locks that occur when a secondary correlation lobe is tracked instead of the main peak. To solve this problem, side-band processing (SBP) operates on the two main lobes of the BOC spectrum separately, in a binary phase shift keying like fashion. Although an unambiguous correlation function is obtained, the information provided by the BOC subcarrier is lost. This information is preserved by the double estimator and by the double phase estimator (DPE) which adopt an additional tracking loop to process the subcarrier component. In this study, the connection between SBP and independent subcarrier processing is shown and a novel SBP scheme, the coherent side-band (CSB) approach, is proposed. As in standard SBP, the two main lobes of the BOC spectrum are processed separately and upper and lower correlators are computed. These correlators are then combined to recover the subcarrier information. CSB provides subcarrier measurements and achieves the performance of the DPE. CSB tracking is thoroughly characterised and simulations and real-data processing are used to support theoretical findings. The CSB approach is an effective alternative to independent subcarrier processing.
Starting Page	1455
Ending Page	1466
Page Count	12
ISSN	17518784
Volume Number	11
e-ISSN	17518792
Issue Number	Issue 10, Oct (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/11/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2016.0245
Journal	IET Radar, Sonar & Navigation
Publisher	The Institution of Engineering and Technology
Publisher Date	2016-09-28
Access Restriction	Open
Rights License	Creative Commons Attribution -Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/)
Subject Keyword	Binary Offset Carrier Modulated Signal Binary Phase Shift Keying BOC Spectrum BOC Subcarrier Coherent Side-band BOC Processing Correlation Method Double Phase Estimator False Peak Locks Modulation And Coding Method Multipeaked Correlation Function Phase Shift Keying Radar Equipment Radar Signal Processing Radar Theory Secondary Correlation Lobe Signal Processing And Detection Subcarrier Component System And Application Tracking Loop Unambiguous Correlation Function
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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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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