Search
Now showing items 1-10 of 118
Adaptive normalization of active sonar data
(NURC, 2006/08)
In active sonar detection the background interference is reduced through normalization prior to applying a detection threshold. From the two mainstream normalization algorithms, i.e. the sliding window and the split window, ...
Doppler passive fathometry
(CMRE, 2019/05)
Passive fathometry is a technique whereby broadband ambient ocean noise received on an array of hydrophones is averaged and cross-correlated to produce a sub-bottom profile [Siderius, Harrison, and Porter (2006). J. Acoust. ...
Source localization in shallow water using multi-frequency processing of shot data
(NATO. SACLANTCEN, 1996/07)
Multi-frequency processing methods are applied to real data generated by explosives to examine the
Multiple sensor Bayesian extended target tracking fusion approaches using random matrices
(CMRE, 2019/06)
The tracking of extended targets is attracting a growing literature thanks to the high resolution of several modern radar systems. A fully Bayesian solution has been proposed in the random matrix framework. In this paper, ...
Localization of multiple sources using time-difference of arrival measurements
(CMRE, 2019/06)
This paper addresses the problem of localizing an unknown number of static sources emitting unknown signals from time-difference of arrival (TDOA) measurements. Based on the framework of random finite sets and finite set ...
Active detection enhancement in coastal areas
(NURC, 2006/08)
The processing chain used for active detection analysis in association with measures of performance that allow real time performance monitoring is presented. Real life examples demonstrating environmental volatility ...
The MPS-3 and the SPS-81
(NATO. SACLANTCEN, 1979/12)
The Larqe Aperture Acoustics Branch of the Naval Research Laboratory has developed a sea-qoinq signal processinq system in which two different types of array processors are used - a Signal Processing Systems SPS-81 and ...
Some high efficiency digital signal processing techniques for high speed signal processing systems
(NATO. SACLANTCEN, 1979/12)
Some high efficiency digital signal processing techniques, based on digital filtering are presented for real-time general-purpose, high-speed signal processing systems. At first high efficiency one-dimensional and ...
Channel sensitive processor: real data processing
(NATO. SACLANTCEN, 1998/02)
The CSP is applied to data collected during the DUSS97 sea trial. A one-way geometry is used and the transmitted signal propagation time is known a priori. As predicted by analytical and simulation studies, the CSP detector ...
Overview of the ADPS signal processor
(NATO. SACLANTCEN, 1979/12)