The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a task priority assignment model based on Gaussian Process (GP) multitask classification which resolve the problem of phased array radar resource scheduling in complex electromagnetic environment. According to the work mode and task of the phased array radar, a task model on GP multitask classifier was established and used to preprocess the factors of amount, position of geometry...
In a Multi-Function Radar (MFR), the radar surveillance plays a critical role to optimize the radar performance. The surveillance usually takes more time than other functions. In this paper, we use the Adapt_MFR, an MFR radar simulator, to analyze the benefits of target prioritization. By simulation of a multiple target scenario, we try to find out both the benefits and disadvantages of prioritization...
This paper tests and demonstrates the ability of a twin set of passive radar systems to monitor real time an area of interest and track medium size targets. The results are based on a real data acquisition campaign performed using two eleven element array antenna based passive radars in the Oslo fjord area in September 2016.
Purpose of the paper is to present a solution for the target height estimation problem for multi-frequency multi-static passive radar. Aim of the proposed estimation strategy is to provide 2D passive sensors, which measure only bistatic range and Doppler, with target height estimation capability via the simultaneous exploitation of multiple FM transmitters (88–108 MHz). Results achieved with simulated...
The outcome of NATO SET-195 RTG concerning “Short term verification of DMPAR concept” gave promising results in the subject of centralized and decentralized fusion. Basing on this concept and study we further expand it to not only compare results of signal and data fusion, but also propose a processing framework in which both cueing and threshold management can be used. In this paper we present our...
A modeling and simulation method for evaluating the jamming performance of a repeater-type active decoy on dynamic combat scenarios is proposed. The time domain echo signals at the tracking radar is evaluated by considering the RF characteristics of the active decoy and the tracking radar based on the Friis transmission formula. Numerical simulation are examined to analyze the jamming performance...
The paper undertakes a problem of tracking radar and AIS fusion in maritime navigation. The focus is laid on target association process, which is the basis for track-to-track fusion. The analysis provides neural approach to association process in which neural network classifies if the association should be stated or not. The paper includes theoretical basics of the proposed approach, as well as numerical...
In this work a Kalman filter for tracking Unmanned Aerial Vehicle (UAV) moving near the base lane of a bistatic radar system and illuminated by GPS signals in three-dimensional (3-D) space is suggested. Continuous-time and discrete-time state equations are derived to define a linear time-invariant model. Model matrices describing the behavior of the object, state vectors, measurement vectors and vector...
The problem of minimizing dwell time in multifunction phased array radar is considered. Target of interest is assumed to fluctuate according to a generalization of Swerling family and the parameters of fluctuation model are assumed to be known. The a'priori position of the target is uncertain. Optimization, whose variables include pulse count and array transmit beampattern, is carried out subject...
Multifunction radars (MFR) have to achieve their capability requirements in an increasingly complex environment, populated with diverse and hostile targets (e.g. low RCS, low speed targets in clutter or high speed, ballistic targets) in saturating scenarios (due to e.g. RF interference or threats). These radar systems are increasingly exploiting active electronically scanned array (AESA) technology...
Multiple target tracking in over-the-horizon radar (OTHR) suffers from two major challenges due to the multipath propagation phenomenon. The first is multipath detection that detects appearing and disappearing targets automatically, while one target may produce s tracks for s propagation paths. The second is multipath tracking that calculates the target-to-measurement-to-path assignment matrices to...
When a massive multiprocessor, such as Graphics Processing Unit, is used for radar signal processing, it achieves its peak performance only with a large amount of data buffering. This causes a significant delay between the actual transmit-receive event and the appearance of detection and/or estimated parameters of an object at the processor output. The paper is aimed at assessing the influence of...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.