Low Observable Principles, Stealth Aircraft and Anti-Stealth Technologies
Journal of Computations & Modelling, vol.4, no.1, 2014, 129-165 ISSN: 1792-7625 (print), 1792-8850 (online) Scienpress Ltd, 2014 Low Observable Principles, Stealth Aircraft and Anti-Stealth Technologies Konstantinos Zikidis (Maj, HAF)1, Alexios Skondras (2nd Lt, HAF)2, Charisios Tokas (2nd Lt, HAF)3, Abstract During the last decades, stealth technology has proven to be one of the most effective approaches as far as the endeavor to hide from radar systems is concerned. Especially for military aircraft, “stealth” or “low observable” technology has become ubiquitous: all new aircraft types are designed taking into account low observable principles and techniques, while existing jet fighters are considered for modification in order to reduce their radar signature. Low radar signature for a target means that it is detected and tracked at a shorter distance from a radar. However, low observable does not mean no observable, i.e., complete disappearance from the radar screens. Furthermore, stealthiness comes at a price. Apart from the development cost, stealth aircraft have higher flyaway cost and important maintenance costs, while they have significant operational limitations due to the specific aircraft shape imposed and materials used, and also due to the limited fuel and weapons, which have to be carried internally. Any pylon, tank, missile or pod carried externally increases the radar signature. Having realized the capabilities of stealth aircraft, many countries have been developing anti-stealth technologies. The following systems have been reported to be potential counter-stealth approaches: passive / multistatic radars, very low frequency radars, over-the-horizon radars and sensitive IR sensor systems.
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