Justification of Requirements to the Operating Area of the Doppler Short-Range Location System

• Main Author: V. A. Kovrigin
• Format: Article
• Language: Russian
• Published: MGTU im. N.È. Baumana 2014-01-01
• Series: Nauka i Obrazovanie
• Subjects: operating area; Doppler frequency; short-range location system; warhead; destructing area
• Online Access: http://technomag.edu.ru/jour/article/view/746

<p>The article considers some issues of matching the operating area of the Doppler shortrange location system (SRLS) with the destructing area of a fragmentation warhead in a wide range of applicability with no information about the angular position of the target.</p><p>When action is against the low altitude aerial targets at the sea surface background Doppler SRLS are often used to provide frequency selection of a target owing to differences in the spectral characteristics of the required signal and interferences. However, Doppler systems have an inherent disadvantage i.e. the inability to estimate the angular position of the target wit respect to the SRLS.</p><p>Consequently, an arising problem to ensure the effectiveness of the combat unit, which includes the guidance system, Doppler SRLS, and fragmentation warhead is of significant practical use, when acting against the low altitude aerial targets in a wide range of encounter environment with a lack of information about the angular position of the target. The article considers a practical method for ensuring the effectiveness of the combat unit by selecting the width of the destructing elements separation angle and its orientation in space.</p><p>An approximate method of geometric matching the scopes of warhead and SRLS based on computer aided numerical calculation is used. With the geometric approach to the efficiency estimation in any desired angular position of the target, Doppler SRLS should form a command to burst the warhead ensuring the straddling of the target by the field of destructing elements in an arbitrary predetermined point of conditions.</p><p>Algorithms of the warhead and SRLS functioning are developed and utilized as applied programs. A Doppler SRLS model is proposed. The SRLS is integrated with semi-active Doppler homing head in case there is small-sized radar target. The article presents a mathematical description of the fragmentation warhead for relatively small misses, ignoring the air resistance. It considers a procedure for forming the predetermined detonation angle of the Doppler SRLS and discusses the features of its implementation in case of large angles of the velocity triangle with a wide-angle warhead.</p><p>As examples to confirm an efficiency of the developed algorithms and programs, results are given which reflect numerical calculations for some typical SRLS functioning in a wide range of the changing angles of the velocity triangle and relative velocities.</p><p>The developed approach can be used for the justification of requirements for the operating accuracy of Doppler SRLS at different design stages, including the initial phase just when forming a conceptual structure only of combat unit.</p>