Searched for: author%3A%22de+Theije%2C+P.A.M.%22
(1 - 20 of 21)

Pages

List view
Grid view
document
de Wit, J.J.M. (author), van Rossum, W.L. (author), Smits, F.M.A. (author), de Theije, P.A.M. (author), Monni, S. (author), Huizing, A.G. (author), TNO Defensie en Veiligheid (author)
Advantages of scalable multifunction RF (SMRF) sensors and networked operation of sensors are well-known. Some advantages are surveillance persistence, multipath resistance, and interference resistance. The particular benefits of applying multifunction RF sensors in a network still need to be studied. In this study, the application of fixed SMRF...
conference paper 2010
document
Fillinger, L. (author), de Theije, P.A.M. (author), Zampolli, M. (author), Sutin, A. (author), Salloum, H. (author), Sedunov, N. (author), Sedunov, A. (author), TNO Defensie en Veiligheid (author)
The international rules for the protection of harbors against threats and intruders typically apply to threats emanating from the land side. Protection against actions and threats from the water side is much less regulated, apart from some individual cases. Potential threats from the water side may consist of intruders including divers with and...
conference paper 2010
document
de Theije, P.A.M. (author), Ainslie, M.A. (author), van Moll, C.A.M. (author), TNO Defensie en Veiligheid (author)
This paper considers statistical detection theory for a system of two geographically distributed sensors. The performance of the two main fusion rules (OR and AND) is evaluated in the absence and presence of position errors in the observations, by means of receiver operating characteristics (ROC) curves. The analysis is restricted to three...
article 2009
document
de Theije, P.A.M. (author), la Cour, B.R. (author), Lang, T. (author), Willett, P. (author), Grimmett, D. (author), Coraluppi, S. (author), Hempel, C.G. (author), TNO Defensie en Veiligheid (author)
The Multistatic Tracking Working Group (MSTWG) was formed in 2005 by an international group of researchers interested in developing and improving tracking capabilities when applied to multistatic sonar and radar problems. The MSTWG developed several simulated multistatic sonar scenario data sets for use in tracker evaluation by the group’s...
conference paper 2008
document
de Theije, P.A.M. (author), TNO Defensie en Veiligheid (author)
In this paper wȩ evaluate the influence of variations in the input parameters on the output of a multi-sensor tracking algorithm, using simulated data. The tracking algorithm is a classical Kalman filter using a Probabilistic Data Association. The input to the tracker consists of contact files, each file containing all contacts identified for a...
conference paper 2008
document
de Jong, A.J. (author), de Theije, P.A.M. (author), Gelsema, S.J. (author), TNO Defensie en Veiligheid (author)
Passive radar systems can exploit various kinds of signals of opportunity, including analogue television signals. Analogue TV signals are not considered favourable though, because they include relatively strong line sync pulses which prevent the unambiguous measurement of range information via correlation techniques. However, the absence of a...
conference paper 2007
document
TNO Defensie en Veiligheid (author), de Theije, P.A.M. (author)
article 2007
document
de Theije, P.A.M. (author), Groen, J. (author), Sabel, J.C. (author), TNO Defensie en Veiligheid (author)
This paper focesus on single-ping classification of sea mines, at a range of about 400 m, and combining a hull mounted sonar (HMS) and a propelled variable-depth sonar (PDVS). The deleoped classifier is trained and tested on a set of simulated realistic echoes of mines and non-mines. As the mines ate too far away for image-based classification,...
conference paper 2006
document
de Theije, P.A.M. (author), Groen, J. (author), TNO Defensie en Veiligheid (author)
This paper describes a simulated data set that can be used for tracker evaluation. The data set is generated in the framework of the Multistatic Tracking Working Group (MSTWG). The simulations are carried out using the TNO SIMONA simulator, which can generate raw hydrophone data for an arbitrary number of sources, receivers, and targets. All of...
conference paper 2006
document
de Theije, P.A.M. (author), Kester, L.J.H.M. (author), Bergmans, J. (author), TNO Defensie en Veiligheid (author)
This paper describes the first results of applying a multi-sensor multi-hypothesis tracker, called M6T, to simulated and experimental sonar data sets. The simulated data have been generated in the context of the Multistatic Tracking Working Group (MSTWG). For a number of cases (number of sensors and number of input false contacts) we evaluate a...
conference paper 2006
document
de Theije, P.A.M. (author), Sindt, J.C. (author), TNO Defensie en Veiligheid (author)
This paper focuses on estimating the two-dimensional (2-D) target-speed vector (course and speed) using a multistatic sonar that consists of one monostatic sonar and one bistatic receiver. The speed and course estimates are obtained after a single transmission. The theory on bistatic Doppler and 2-D target-speed vector estimation is first...
article 2006
document
Stefano, C. (author), Doug, G. (author), de Theije, P.A.M. (author), TNO Defensie en Veiligheid (author)
This paper provides an overview of the special session on multistatic sonar and radar tracking at FUSION 2006. This includes background on the multistatic tracking working group, a brief description of the datasets and trackers that compose this working group at present, and a detailed discussion of a proposed set of tracker performance metrics....
conference paper 2006
document
de Theije, P.A.M. (author), van Moll, C.A.M. (author), TNO Defensie en Veiligheid (author)
This paper presents an algorithm that can be used to fuse two sets of contacts, e.g. as observed by two active sonar systems. The goal is to keep a good probability of detection, without doubling the number of false alarms after combining both data sets. We present both the theoretical motivation of the algorithm, as well as simulations that...
conference paper 2005
document
de Theije, P.A.M. (author), TNO Defensie en Veiligheid (author)
This paper presents STARE, a sonar-data post-processing and visualisation toot developed by TNO and written in Matlab 6.5. The software takes into account all available acoustic and non-acoustic data (GPS, radar, source/receiver position, time latencies, etc.). The latter can be used to get optimal position information for the identified sonar...
conference paper 2005
document
TNO Fysisch en Elektronisch Laboratorium (author), Sindt, J.C. (author), de Theije, P.A.M. (author)
Submarines becoming more and more silent, the Navies have much interest in active-sonar applications for Anti-Submarine Warfare (ASW). The overt nature of low-frequency active sonar (LFAS) operations could give to an opposing submarine the potential initiative. This risk can be significantly reduced by the use of multistatic sonar techniques....
conference paper 2004
document
TNO Fysisch en Elektronisch Laboratorium (author), Ort, C.M. (author), Beerens, S.P. (author), de Theije, P.A.M. (author)
Although in most recent crises around the world it would appear from a superficial glance that there was no imminent underwater threat, a closer look shows differently. In the War on Iraq, for instance, a large allied effort was spent on eliminating the very real mine threat that endangered the supply of troops and goods to the harbour of Umm...
article 2004
document
Ort, C.M. (author), Beerens, S.P. (author), de Theije, P.A.M. (author), TNO Fysisch en Elektronisch Laboratorium (author)
Although in most recent crises around the world it would appear from a superficial glance that there was no imminent underwater threat, a closer look shows differently. In the War on Iraq, for instance, a large allied effort was spent on eliminating the very real mine threat that endangered the supply of troops and goods to the harbour of Umm...
article 2003
document
de Theije, P.A.M. (author), TNO Fysisch en Elektronisch Laboratorium (author)
A new adaptive method is presented to display large amounts of data on, for example, a computer screen. The algorithm reduces a set of N samples to a single value, using the statistics of the background. The true peak value in the set of N samples is compared to the expected peak value of this background, allowing for a possible global trend in...
conference paper 2002
document
de Theije, P.A.M. (author), Sindt, J.-C. (author), TNO Fysisch en Elektronisch Laboratorium (author)
conference paper 2002
document
de Theije, P.A.M. (author), TNO Fysisch en Elektronisch Laboratorium (author)
A new adaptive method is presented to display large amounts of data on, for example, a computer screen. The algorithm reduces a set of N samples to a single value, using the statistics of the background and cormparing the true peak value in the set of N samples to the expected peak value of this background, taking into account a possible global...
conference paper 2002
Searched for: author%3A%22de+Theije%2C+P.A.M.%22
(1 - 20 of 21)

Pages

List view
Grid view