基于干扰平台旋转的反向交叉眼干扰研究

发布时间：2019-03-06 16:15

【摘要】：单脉冲雷达只利用一个脉冲信号就能够获得目标的角度信息,广泛应用于现代精密跟踪雷达,尤其是在导弹的末制导阶段使用单脉冲角跟踪技术体制能够简便准确地测得目标所在方向。单脉冲雷达对传统的干扰技术具有很强的抗干扰能力,交叉眼干扰是少数能够对单脉冲雷达产生有效干扰的方法之一。交叉眼干扰是一种人为地重构闪烁现象的角度干扰方法,常用于舰船和飞行器等平台的自我保护,能够诱导单脉冲跟踪雷达脱离真实目标而指向虚假目标的方向。交叉眼干扰到达雷达阵面的相位不能严格反相,严重影响干扰效果,基于范阿塔阵列提出了反向交叉眼,能够使信号间的相位尽可能不受传输路径的影响。尽管已经建立了基于扩展分析法的反向交叉眼的数学模型,拓展了相位偏移和幅度增益的取值范围。但针对反向交叉眼干扰方案的研究还不完善,已有的分析都是将干扰平台旋转角设定为定值,没有考虑干扰平台可能旋转、抖动或者被不同方向的雷达探测的情况,在一定情况下会影响反向交叉眼的干扰效果。本文是在进行距离波门拖引干扰的基础上进行研究,消除了干扰平台回波对交叉眼干扰的影响,仅研究交叉眼干扰的调制信号到达跟踪雷达的情况。将干扰平台旋转角设定为变量,提出能够在此条件下仍能够进行角度干扰的交叉眼方案,同时将多元线阵和多环路结构引入到反向交叉眼方案中。具体来讲,本文的研究背景和成果主要包括以下几个部分：第一部分主要研究了交叉眼干扰相关的基础理论。首先,介绍了常见的测角方法,重点围绕振幅和差单脉冲和相位和差单脉冲展开讨论。其次,对针对单脉冲雷达的角度干扰进行了分析,着重介绍了相干干扰和非相干干扰。再次,概述了曾经应用于闪烁干扰且能够继续应用到交叉眼干扰的经典理论分析方法,主要包括线性拟合法和波前分析法。最后,简单介绍了针对脉冲雷达的距离波门拖引干扰。第二部分提出了正交单环路旋转反向交叉眼方案,引入稳定因数的概念作为新的评判标准,衡量产生稳定角度干扰的能力。在干扰平台旋转角为变量的前提下,提出了单环路旋转反向交叉眼方案。分别对传统两点源反向交叉眼和单环路旋转反向交叉眼方案进行数学推导,得到关于角度偏差的闭合解方程。以稳定因数为标准,分别对传统两点源反向交叉眼和单环路旋转反向交叉眼方案进行分析,获得具有最佳稳定因数的正交单环路旋转交叉眼方案。同时,使用针对船舶或者飞行器的导弹的典型参数进行数值实验,分析和比较的结果进一步证明正交单环路旋转反向交叉眼方案的优越性。第三部分主要研究了正交单环路旋转反向交叉眼的干扰容限,利用角度参数特定边界值来确定相位偏移和幅度增益的取值范围。在干扰平台旋转角为变量的前提下,对曾经应用于传统两点源反向交叉眼的容限分析经典方法进行介绍,得出基于扩展分析法的容限分析更贴近实际情况。以角度参数特定边界值为标准,对传统两点源反向交叉眼和正交单环路旋转反向交叉眼分别进行干扰容限分析,推导出关于角度参数特定边界值的闭合解方程。对传统两点源反向交叉眼和正交单环路旋转反向交叉眼进行比较,从数学本质上对两种方案加以区别。最后的数值实验,进一步证明了正交单环路旋转反向交叉眼方案的优越性,并计算出典型参数下的相位偏移和幅度增益的取值范围。第四部分主要研究了基于多点源与多环路的反向交叉眼改进方案。针对正交单环路旋转反向交叉眼在实际应用中受限的问题,将多点源和多环路结构引入到反向交叉眼方案中。在干扰平台旋转角为变量的前提下,介绍了线性多点源反向交叉眼方案的两种常用分析方法,得出基于扩展分析法的分析结果更贴近实际情况。同时,推导了关于角度偏差的闭合解方程。使用扩展分析法分别对本部分所提方案进行理论分析,得到关于角度偏差的闭合解方程。以稳定因数和固定幅度增益下相位取值范围为标准,相较于传统方案,本部分所提两种方案在理论以及实践中均具有明显优势。
[Abstract]:The single pulse radar can obtain the angle information of the target by only one pulse signal, and is widely applied to the modern precision tracking radar, in particular, the single pulse angle tracking technology system can be used for accurately and accurately measuring the direction of the target in the end-guidance phase of the missile. The single-pulse radar has strong anti-interference ability to the traditional jamming technology, and the cross-eye interference is one of the methods which can effectively interfere with the single-pulse radar. Cross-eye interference is an angle-jamming method for artificially reconstructing a flicker phenomenon, which is commonly used in the self-protection of a platform such as a ship and an aircraft, and can induce the single-pulse tracking radar to deviate from the real target and point to the direction of the false target. The phase of the cross-eye interference reaching the radar cross-eye can not be strictly inverted, and the interference effect is seriously affected. The inverted cross-eye is proposed based on the Van Arta array, and the phase between the signals can be made as free from the influence of the transmission path as much as possible. Although the mathematical model of the reverse cross-eye based on the extension analysis method has been established, the value range of the phase offset and the amplitude gain is expanded. but the research on the reverse cross-eye interference scheme is not perfect, the existing analysis is to set the rotation angle of the interference platform to a fixed value, and the situation that the interference platform can rotate, shake or be detected by the radar in different directions is not considered, In some case, that interference effect of the reverse cross-eye is influence. In this paper, the influence of the interfering platform echo on the cross-eye interference is studied on the basis of the distance-wave gate-induced interference, and only the modulated signals of the cross-eye interference reach the tracking radar. Setting the rotation angle of the interference platform as a variable, and proposing a cross-eye solution capable of performing angle interference under the condition, and simultaneously introducing the multi-element linear array and the multi-loop structure into the reverse cross-eye solution. In particular, the research background and achievements of this paper mainly include the following parts: the first part mainly studies the basic theory of cross-eye interference. First of all, a common method of angle measurement is introduced, with emphasis on the discussion of amplitude and difference single pulse and phase and difference single pulse. Secondly, the angle interference for single pulse radar is analyzed, and the coherent interference and non-coherent interference are emphatically introduced. Thirdly, the classical theoretical analysis method, which has been applied to the flicker interference and can continue to be applied to cross-eye interference, is described, which mainly includes the linear quasi-legal and the wave-front analysis method. Finally, the interference of the distance wave gate of the pulse radar is simply introduced. In the second part, an orthogonal single-loop rotary reverse cross-eye scheme is proposed, and the concept of the stability factor is introduced as a new evaluation criterion to measure the ability to generate stable angular interference. On the premise of the rotation angle of the interference platform, a single-loop rotary reverse-cross-eye scheme is proposed. In this paper, the traditional two-point source reverse cross-eye and the single-loop rotary reverse-cross-eye scheme are derived mathematically, and the closed-solution equation about the angular deviation is obtained. The orthogonal single-loop rotary cross-eye scheme with the best stability factor is obtained by analyzing the traditional two-point source reverse cross-eye and the single-loop rotary cross-eye scheme with the stability factor as the standard. At the same time, the numerical experiments, analysis and comparison of the typical parameters of the missile for the ship or the aircraft are used to further prove the superiority of the orthogonal single-loop rotating reverse cross-eye solution. The third part mainly studies the interference tolerance of the orthogonal single-loop rotating reverse cross-eye, and uses the specific boundary value of the angle parameter to determine the range of the value of the phase offset and the amplitude gain. On the premise of the rotation angle of the interference platform, the classical method of the tolerance analysis that has been applied to the traditional two-point source backward cross-eye is introduced, and the tolerance analysis based on the extension analysis method is more close to the actual situation. By using the specific boundary value of the angle parameter as the standard, the interference tolerance analysis is carried out on the traditional two-point source reverse cross-eye and the orthogonal single-loop rotary reverse cross-eye, respectively, and the closed solution equation for the specific boundary value of the angle parameter is derived. The traditional two-point source reverse cross-eye and the orthogonal single-loop rotating reverse cross-eye are compared, and the two schemes are distinguished from the mathematical essence. Finally, the advantage of the orthogonal single-loop rotary cross-eye scheme is proved, and the value range of the phase offset and the amplitude gain under the typical parameters is calculated. The fourth part mainly studies the improvement of the reverse cross-eye based on the multi-point source and the multi-loop. The multi-point source and the multi-loop structure are introduced into the reverse cross-eye scheme for the problem that the orthogonal single-loop rotating reverse cross-eye is limited in the practical application. On the premise of the rotation angle of the interference platform, two common analysis methods of the linear multi-point source reverse cross-eye scheme are introduced, and the result of the analysis based on the extension analysis method is more close to the actual situation. At the same time, the closed solution equation about the angle deviation is derived. The method of extension analysis is used to carry out the theoretical analysis of the scheme of the part, and the closed solution equation with respect to the angle deviation is obtained. Compared with the traditional scheme, the two schemes proposed in this part have obvious advantages in theory and practice.
【学位授予单位】：西安电子科技大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：TN958.4

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