Use of terrain information to improve the performance of a target tracker

Canay, Mustafa
Radar target tracking problem has been a popular topic for several decades. Recent works have shown that the performance of tracking algorithms increases as more prior information is used by the system; such as maximum velocity and maximum acceleration of the target, altitude of the target, or the elevation structure of the terrain. In this thesis we will focus on increasing the performance of tracking algorithms making use of benefit from the elevation model of the environment where the target tracker is searching. For a constant target altitude and a certain radar location, we generate a “visibility map” using the elevation model of the terrain and use this information to estimate the location and the time that the target will reappear. The second aim of this work is to use the visibility map information for improving the performance of track initiation. For that purpose, a special map has been formed, that we call as the “track initiation probability map”, which shows the target first time appearance density. This information has been used at the initialization part of the track initiation algorithm in order to increase the performance.


Detection of airport runways in optical satellite images
Zöngür, Uğur; Ulusoy, İlkay; Department of Electrical and Electronics Engineering (2009)
Advances in hardware and pattern recognition techniques, along with the widespread utilization of remote sensing satellites, have urged the development of automatic target detection systems. Automatic detection of airports is particularly essential, due to the strategic importance of these targets. In this thesis, a detection method is proposed for airport runways, which is the most distinguishing element of an airport. This method, which operates on large optical satellite images, is composed of a segmenta...
Antenna patterns for detecting slowly moving targets in two channel gmti processing
Yıldırım, Gökhan; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2010)
Ground Moving Target Indicator (GMTI) is a well-known and widely used signal processing method in airborne and spaceborne radars. In airborne radar and GMTI literature, many radar designs and signal processing techniques have been developed to increase the detection and estimation performance under heavy interference conditions. The motion of the aircraft on which the radar is mounted, high altitudes and ranges, targets with low radar cross sections and slowly moving targets complicates the problem of local...
Efficient Methods of Clutter Suppression for Coexisting Land and Weather Clutter Systems
Candan, Çağatay; Yılmaz, Ali Özgür (Institute of Electrical and Electronics Engineers (IEEE), 2009-10-01)
The removal of coexisting land and weather clutter signals is a common problem in many radar applications. Although the optimal method for land-weather clutter suppression is known, it is usually not amenable to implementation due to computation and storage limitations of the processor. We propose an alternative method that employs low rank approximations on weather clutter correlation matrix to obtain detectors which are feasible to implement. The performance of the proposed method is compared with the opt...
Collaborative mobile target imaging in ultra-wideband wireless radar sensor networks
Arık, Muharrem; Akan, Özgür Barış; Department of Electrical and Electronics Engineering (2008)
Wireless sensor networks (WSN) have thus far been used for detection and tracking of static and mobile targets for surveillance and security applications. However, detection and tracking do not suffice for a complete satisfaction of these applications and an accurate target classification. To address this need, among various target classification methods, imaging of target yields the most valuable information. Nevertheless, imaging of mobile targets moving over an area requires networked and collaborative d...
Target tracking with phased array radar by using adaptive update rate
İpek, Özlem; Kuzuoğlu, Mustafa; Department of Electrical and Electronics Engineering (2010)
In radar target tracking problems, it may be required to use adaptive update rate in order to maintain the tracking accuracy while allowing the radar to use its resources economically at the same time. This is generally the case if the target trajectory has maneuvering segments and in such a case the use of adaptive update time interval algorithms for estimation of the target state may enhance the tracking accuracy. Conventionally, fixed track update time interval is used in radar target tracking due to the...
Citation Formats
M. Canay, “Use of terrain information to improve the performance of a target tracker,” M.S. - Master of Science, Middle East Technical University, 2009.