外形隐身改进对坦克目标电磁散射特性的影响  

Influence of Shape Stealth Improvement on Electromagnetic Scattering Characteristics of Tanks

作　　者：刘战合 罗明强[3] 郭乐[4] 田博韬 罗丽红 LIU Zhan-he;LUO Ming-qiang;GUO Le;TIAN Bo-tao;LUO Li-hong(School of Aeronautic Engineering,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;Research Institute of Unmanned Aerial Vehicles,Zhengzhou University of Aeronautics,Zhengzhou 450046,China;School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China;School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]郑州航空工业管理学院航空工程学院,郑州450046 [2]郑州航空工业管理学院无人机研究院,郑州450046 [3]北京航空航天大学航空科学与工程学院,北京100191 [4]西北工业大学航空学院,西安710072

出　　处：《科学技术与工程》2021年第5期1865-1870,共6页Science Technology and Engineering

基　　金：国家自然科学基金(11702255);河南省科技攻关计划(212102210052,202102210267);河南省自然科学基金(182300410159)。

摘　　要：外形隐身是提高武器装备生存力的重要手段,为研究其对坦克的散射影响特性,提出分析外形隐身对坦克电磁散射影响的研究方法。基于某型隐身坦克,建立了隐身、常规坦克电磁模型,计算了多频、多俯仰角的雷达散射截面(radar cross section,RCS)及其减缩值,并进行了分析。结果说明,外形隐身技术可使散射曲线向内收敛,并大幅降低坦克模型的散射强度(尤其在前后向角域);频率增加时,隐身模型的前向60°角域RCS均值逐渐减小,而减缩值增大,最高可达26.7713 dB;俯仰角增加时,采用外形隐身后,前向RCS均值在-22.0603~-18.6083 dBsm振荡,在0°俯仰角外形隐身效果最好,减缩值可达24.4734 dB,在其他俯仰角有降低趋势;外形隐身可明显改善坦克前向和后向隐身性能,并具有较强的多频、多俯仰角隐身改进作用。The shape stealth is an important means to improve survivability of weapons and equipment.In order to study the influence on scattering of tanks,the research method to analyze influence of shape stealth on electromagnetic scattering of tanks was proposed.The electromagnetic models of stealth and conventional tanks were established according to a certain type stealth tank,and radar cross section(RCS)values and reduction values of multi-frequency and multi-pitch angles were calculated and analyzed.The results show that shape stealth technology can make scattering curves converge inward and greatly reduce the scattering intensity of tank models,especially in the angular domain on nose direction.And when the frequency increases,the RCS mean values of stealth model gradually decrease and reduction values increase in the angular domain of 60°on nose direction,with maximum value is 26.7713 dB.When the pitch angle increases,the RCS mean values of shape stealth model in the angular domain on nose direction oscillate between-22.0603 dBsm and-18.6083 dBsm,and the best stealth effect appears in the pitch angle of 0°,with the reduction value is 24.4734 dB,besides,the decreasing trend also occurs in other pitch angles.The shape stealth can significantly improve the stealth performance of tanks on nose and rear direction,and it also has a strong stealth improvement with multi-frequency and multi-pitch angle.

关 键 词：坦克 隐身 电磁散射 雷达散射截面 减缩 

分 类 号：TN011[电子电信—物理电子学]