نتایج جستجو برای: military radar

تعداد نتایج: 79935  

2012
Ralph D. Thiele Mark Barrett Dick Bedford Elizabeth Skinner

Maritime domain security relies on the ability to build a comprehensive awareness of maritime activity. Although it is still in the developmental stages situational awareness is the prerequisite of maritime domain security. Today technological developments such as space‐based systems, over‐the‐horizon radar, and near‐ shore and harbour acoustics can be incorporated into...

2015
X. Susan Christina S. Ramya S. Maheswari

Target detection and localization is an active research area due to its importance in a wide range of application such as biomedical and military applications. In this paper, a novel method for the detection and estimation of signal parameters such as range and direction of arrival for multiple farfield target using wideband echo chirp signals is proposed. Sonar and radar are the active detecti...

2017
Wen Jiang Ying Cao Lin Yang Zichang He

Specific emitter identification plays an important role in contemporary military affairs. However, most of the existing specific emitter identification methods haven't taken into account the processing of uncertain information. Therefore, this paper proposes a time-space domain information fusion method based on Dempster-Shafer evidence theory, which has the ability to deal with uncertain infor...

2014
B. Jiang

For a flying military vehicle, avoiding detection can be a key objective. To achieve this, flying the least-probability-of-detection path from A to B through a field of detectors is a fundamental strategy. While most of the previous optimization models aim to minimize the cumulative radar exposure, this paper derives a model that can directly minimize the probability of being detected. Furtherm...

2002
Jim Schroeder

Importance of Image Exploitation Defence forces rely upon a variety of sensor information to locate and track oppositional forces; the surveillance problem becomes particularly difficult over large land areas with sparse population centres and over the great expanse of the seas. The modern warfighter is dependent upon several types of image data to aid in the surveillance task including optical...

2014
D. Patrick

There are a number of potential applications for low cost short range phased array radar sensors: ship bumpers, large vehicle sensors and level crossing obstacle detection for example. Phased arrays have the benefit of reduced size and the elimination of moving parts compared with more traditional rotating antenna systems. Another potential benefit is that the image update rate can be orders of...

2007
Harold M. Heggestad

II The normal duties of-ATC equipment maintenance are to observe performance indicators and measurements, infer &om these data whether the equipment is in good health, and, if a problem is found, diagnose its cause and perform the necessary repairs. Machine intelligence (MI) technology offers a means for automating much of this work load. Indeed, Lincoln Laboratory has developed and fielded sev...

2003
Mehrdad Soumekh

Monostatic and bistatic Synthetic Aperture Radar (SAR) imaging systems with Wide-Bandwidth Continuous-Wave (WB-CW) sources have been utilized for military reconnaissance. WB-CW sources are less susceptible than FM-CW sources to Electronic Counter Measures (ECM). The main shortcoming of the WB-CW microwave illumination is that its resultant SAR echoed signal is not composed of distinct Doppler s...

Journal: :Reviews on environmental health 2010
Adamantia Fragopoulou Yuri Grigoriev Olle Johansson Lukas H Margaritis Lloyd Morgan Elihu Richter Cindy Sage

In November, 2009, a scientific panel met in Seletun, Norway, for three days of intensive discussion on existing scientific evidence and public health implications of the unprecedented global exposures to artificial electromagnetic fields (EMF). EMF exposures (static to 300 GHz) result from the use of electric power and from wireless telecommunications technologies for voice and data transmissi...

2004
Donka S. Angelova Lyudmila Mihaylova Tzvetan Semerdjiev

This paper considers the problem of joint maneuvering target tracking and classification. Based on the recently proposed particle filtering approach, a multiple model particle filter is designed for two-class identification of air targets: commercial and military aircraft. The classification task is implemented by processing radar (kinematic) measurements only, no class (feature) measurements a...

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