Protection Capability Comparison of Different Radar in Front Doors Coupling

doi:10.3969/j.issn.1009-086x.2024.01.015

Abstract

Abstract:

Aiming at the problem that radar is easy to be damaged when being attacked by HPM weapons， this paper theoretically analyzes the relationship between the farthest protection boundary to antenna gain and receiving front-end limiter’s capability， and compares the capability of reflector radar and active phased array radar against front door coupling attack from the perspective of spatial filtering. The analysis shows that only when the HPM weapon is near the main lobe range of the reflector radar antenna， its front door coupling attack effect is stronger than that of the active phased array radar； on the contrary， it is weaker than active phased array radar. Because the main beam of the reflector antenna radar is very narrow， the attack time window is very short， so the reflector antenna radar has stronger protection ability when facing HPM weapons.

Key words: radar, high power microwave, front door coupling, protection ability, gain, lobe

摘要：

针对雷达遭受高功率微波武器攻击时容易损伤的问题，理论分析了雷达最远防护边界和雷达天线增益及接收机限幅器能力的关系，从空间滤波的角度，对比了反射面雷达和有源相控阵雷达抗前门耦合攻击的能力。分析得出只有高功率微波武器处于反射面雷达天线的主瓣范围附近时，对其前门耦合攻击效果才强于有源相控阵雷达；反之，要弱于有源相控阵雷达。由于反射面天线雷达主波束很窄，造成攻击的时机很短，所以反射面雷达在面对高功率微波武器时防护能力更强。

关键词: 雷达, 高功率微波, 前门耦合, 防护能力, 增益, 波瓣

CLC Number:

TN95

Xin HU, Jiangping YANG, Cangzhen MENG, Zhifang ZUO, Yi XU, Yuxi XIE. Protection Capability Comparison of Different Radar in Front Doors Coupling[J]. Modern Defense Technology, 2024, 52(1): 116-123.

胡欣, 杨江平, 孟藏珍, 左治方, 许一, 谢雨希. 雷达抗前门耦合攻击防护能力对比分析[J]. 现代防御技术, 2024, 52(1): 116-123.

Figures/Tables 12

Fig. 1 Coupling path of high power microwave to radar antenna

Fig. 2 Structure diagram of active phased array radar antenna

Fig. 3 Structure diagram of reflector radar antenna

Fig. 4 Structure diagram of passive phased array radar antenna

Fig. 5 Horizontal gain of common reflector antenna

Fig. 6 Horizontal gain of common patch antenna

Fig. 7 Vertical gain of common reflector antenna

Fig. 8 Vertical gain of common patch antenna

Fig. 9 Farthest protective boundary of the two radars on the horizontal plane

Fig. 10 Farthest protective boundary of the two radars in the vertical plane

Fig. 11 Farthest protective boundary in the vertical direction deviating from the main lobe orientation of 90°

Fig. 12 Farthest protective boundary deviating from the main lobe of 45°

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