摘要
导引头性能测试中,射频仿真的关键在于天线阵列辐射被试设备所需的目标回波,但天线三元组阵列的辐射特性即射频仿真系统的空域特性与导引头真实回波之间存在差异,并且难以解析表达,使得导引头测角误差的量化分析比较困难。针对上述问题,采用天线阵列电磁建模结合雷达导引头数学建模的方法,得到系统空域特性,计算其在不同目标位置引起的导引头测角误差。结果表明:射频仿真系统的空域特性会影响导引头的测角灵敏度和测角精度,而建立的模型能准确量化误差,便于修正三元组幅度控制指令以补偿测角误差,提高导引头接收信号角位置精度,增强导引头性能测试的可靠性。
During performance test of seeker, target echo simulation is the key. But the spatial characteristic of radio frequency simulation system produced by radiation of triad arrays is different from the true echo and is hardly to be expressed in mathematics, so that it is difficult to estimate angle measurement errors. In view of the above prob- lem, a new method was proposed, which combines electromagnetic modeling of triad arrays with mathematical modeling of the sum-difference patterns range-comparison mono-pulse radar system. The spatial characteristic of radio frequency simulation system was obtained through simulation. The angle measurement errors of various target positions were calculated. The results show that the spatial characteristics of radio frequency simulation system can affect the sensitivity and accuracy of angle measurement. The models can accurately quantify the error so that the magnitude of triad arrays can easily be controlled and the error can be corrected in advance. The precision of target signal position received by the seeker is improved, and the reliability of performance test of the seeker is enhanced.
出处
《计算机仿真》
CSCD
北大核心
2015年第5期90-94,共5页
Computer Simulation
关键词
射频仿真系统
三元组
空域特性
单脉冲
Radio frequency simulation system
Triad Arrays
Spatial characteristics
Mono-pulse
