NDLI: Radar measurement extraction in the presence of sea-surface multipath

Content Provider	IEEE Xplore Digital Library
Author	Sinha, A. Bar-Shalom, Y. Blair, W.D. Kirubarajan, T.
Copyright Year	1965
Abstract	In the presence of sea-surface multipath monopulse radar signals from a low elevation target have three alternative paths in addition to the direct (radar-to-target) path due to reflections from the sea surface. The specular reflection causes significant signal fading. The diffuse reflection causes an approximately constant bias to the in-phase component of the monopulse ratio, which is the standard extractor of the direction of arrival (DOA) in the monopulse processing. The diffuse reflection also causes higher standard deviation to the in-phase component of the monopulse ratio. We propose a maximum likelihood (ML) angle extraction technique for low elevation targets of known average signal strength having a Rayleigh fluctuation. The results show that this method reduces the error of the estimated angle compared with the conventional monopulse ratio estimator. Subsequently, the ML angle extractor is modified for the unknown average signal strength case. This modified angle extractor has only a small performance degradation compared with the known average signal strength case, but it performs much better than the monopulse ratio based estimator. An algorithm to calculate the accuracy of the estimated angle (or height) is also presented. This angle extractor reduces the root-mean-square error (RMSE) by more than 50% in the signal processing stage when used in a low flying target tracking scenario. The same algorithm can be used to track sea skimmers.
Starting Page	550
Ending Page	567
Page Count	18
File Size	1560919
File Format	PDF
ISSN	00189251
Volume Number	39
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radar measurements Reflection Signal processing algorithms Target tracking Sea surface Fading Maximum likelihood estimation Fluctuations Degradation Accuracy
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Aerospace 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

Maximum likelihood angle extractor in the presence of sea-surface multipath

Tracking low elevation targets in the presence of multipath propagation

Tracker and signal processing for the benchmark problem with unresolved targets

Frequency agility and fusion for tracking targets in the presence of multipath propagation

Tracking Swerling fluctuating targets at low altitude over the sea

Maximum likelihood angle extractor for two closely spaced targets

Multiple Target Tracking Using Maximum Likelihood Probabilistic Data Association

Statistics of monopulse measurements for tracking targets in the presence of sea-surface induced multipath

Low angle tracking using iterative multipath cancellation in sea surface environment

Radar measurement extraction in the presence of sea-surface multipath

Similar Documents

Maximum likelihood angle extractor in the presence of sea-surface multipath

Tracking low elevation targets in the presence of multipath propagation

Tracker and signal processing for the benchmark problem with unresolved targets

Frequency agility and fusion for tracking targets in the presence of multipath propagation

Tracking Swerling fluctuating targets at low altitude over the sea

Maximum likelihood angle extractor for two closely spaced targets

Multiple Target Tracking Using Maximum Likelihood Probabilistic Data Association

Statistics of monopulse measurements for tracking targets in the presence of sea-surface induced multipath

Low angle tracking using iterative multipath cancellation in sea surface environment

Radar measurement extraction in the presence of sea-surface multipath