NDLI: Interferometric angle estimation for bathymetry performance analysis

Content Provider	IEEE Xplore Digital Library
Author	Llort-Pujol, G. Sintes, C.
Copyright Year	2011
Description	Author affiliation: Institut TELECOM - TELECOM Bretagne, CNRS Lab-STICC UMR 3192, Technopôle Brest Iroise, CS 83818 - 29238 Brest, France (Llort-Pujol, G.; Sintes, C.)
Abstract	The quality of depth measurements used in either sonar or radar applications determines the confidence on the mapping accuracy. Several methods can be considered to determine this depth measurement, ranging from amplitude-based detection, interferometry, to complex signal-based detection, such as so-called high-resolution methods. This paper is devoted to the analysis of interferometry accuracy according to the nature of the recorded signal. Indeed, the level of fluctuation of the received signal depends on the remote-sensing application under consideration. In applications where both transmitter and receiver are linked with a direct path, e.g. underwater positioning applications or some underwater acoustic communication systems, neither a backscattering nor multipath effects increases the intrinsic fluctuating nature of signal. Conversely, in sonar bathymetry or radar earth-surface relief applications, the received signal suffers from reflection or backscattering effects, resulting in a more probable random behavior. Hence, the goal of this paper is first to investigate the behavior of two different signal models (stable and fluctuating targets), second to determine the associated signal fluctuation level, and finally, to intend to relate their interferometry accuracies. The different expressions of the interferometry accuracy will make it possible to adapt the accuracy computation of interferometry measurements to the application under consideration. Furthermore, a set of easy-to-use interferometry-accuracy expression will result from the statistical analysis, enabling simple topographic performance prediction.
Starting Page	1
Ending Page	8
File Size	1079173
Page Count	8
File Format	PDF
ISBN	9781457700866
e-ISBN	9781457700880
DOI	10.1109/Oceans-Spain.2011.6003387
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-06
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Interferometry Accuracy Estimation Receivers Approximation methods
Content Type	Text
Resource Type	Article

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