Optimum search strategies for electronic support measures receivers

Balaban, Halim Sinan
Electronic Support Measures is a discipline of electronic warfare. In electronic support measures, receivers must maintain surveillance over the very wide portion of the electromagnetic spectrum in which threat emitters operate. In current receiver technology, it is not possible to have a receiver which is at once both able to discriminate multiple simultaneous emissions and highly sensitive. A common approach is to use a receiver with a relatively narrow bandwidth that sweeps its centre frequency over the threat bandwidth to search for emitters. The sequence and timing of changes in the centre frequency constitute a search strategy or sensor scheduling problem. A good electronic support receiver should observe the threat emitters, usually radars, very soon after it first begins transmitting, so in designing search strategy we would like to ensure that the intercept time is low or the probability of intercept after a specified time is high. In this thesis, we study the search strategies used in electronic support measures receivers. Moreover, a search strategy based on probability of intercept of the threats is proposed. The performances of the search strategies are compared at the end of the thesis.


Performance Improvement of Time-Balance Radar Schedulers Through Decision Policies
Çayır, Ömer; Candan, Çağatay (2018-08-01)
The resource management of a phase array system capable of multiple target tracking and surveillance is critical for the realization of its full potential. This paper aims to improve the performance of an existing method, time-balance (TB) scheduling, by establishing an analogy with a well-known stochastic control problem, the machine replacement problem. With the suggested policy, the scheduler can adapt to the operational scenario without a significant sacrifice from the practicality of the TB schedulers....
Shock analysis of an antenna structure subjected to underwater explosions
Demir, Mehmet Emre; Çalışkan, Mehmet; Department of Mechanical Engineering (2015)
Antenna structures constitute main parts of electronic warfare systems. Mechanical design is as crucial as electromagnetic design of antenna structures for proper functioning and meeting high system performance needs. Failure of mechanical and electronic structures operating under shock loading is a common occurrence in naval electronic warfare applications. A complete shock analysis of the dipole antenna structure subjected to underwater explosions is performed to foresee adverse effects of mechanical shoc...
Periodic search strategies for electronic countermeasure receivers with desired probability of intercept for each frequency band
Köksal, Emin; Kuzuoğlu, Mustafa; Department of Electrical and Electronics Engineering (2010)
Radar systems have been very effective in gathering information in a battlefield, so that the tactical actions can be decided. On the contrary, self-protection systems have been developed to break this activity of radars, for which radar signals must be intercepted to be able to take counter measures on time. Ideally, interception should be done in a certain time with a 100% probability, but in reality this is not the case. To intercept radar signals in shortest time with the highest probability, a search s...
Fault Tree Analysis of a Fire Hazard of a Power Distribution Cabinet with Petri Nets
Pahsa, Alper; Bayazit, T. Arinc; Alat, Gokcen; Baykal, Buyurman (2010-10-13)
Motivation of this study is to verify system safety analysis of HAVELSAN Peace Eagle Program developed hardware items for Ground Support Systems. A preliminary hazard analysis for each of the hardware developed items are performed and safety hazard analysis models are constructed with risk assessment of hazards based on their probability of occurrences for future operational and maintenance activities. An example for this kind of analysis the system safety fault tree analysis model of a Ground Support Segme...
Jammer cancelation by using space-time adaptive processing
Uysal, Halil; Severcan, Mete; Department of Electrical and Electronics Engineering (2011)
Space-Time Adaptive Processing (STAP) has been widely used in spaceborne and airborne radar platforms in order to track ground moving targets. Jammer is an hostile electronic countermeasure that is being used to degrade radar detection and tracking performance. STAP adapts radar’s antenna radiating pattern in order to reduce jamming effectiveness. Jamming power that enters the system is decreased with respect to the adapted radiation pattern. In this thesis, a generic STAP radar model is developed and imple...
Citation Formats
H. S. Balaban, “Optimum search strategies for electronic support measures receivers,” M.S. - Master of Science, Middle East Technical University, 2012.