高精度宽开比幅测向方法研究及工程实现

【作者】 刘兴明；

【导师】 胡皓全；

【作者基本信息】 电子科技大学 ， 电子与信息工程， 2003， 硕士

【摘要】 本文围绕着电子战武器系统的战术技术指标—测向精度，对传统的测向方法的理论基础进行了深入的分析、比较和研究，提出了采用16信道单脉冲比幅测向体制和新的相位延时估算方法，通过计算机的仿真摸拟计算，以及在实际的工程实现中采取的相关措施，解决了采用传统的测向方法提高测向精度，满足电子战武器系统的战术技术指标要求和装备的适装性。 电子战是现代战争中的一种特殊作战方式，也是一种重要的作战手段。电子战技术包含了电子侦察、电子干扰、电子战摧毁和隐身等几大类。电子侦察是获取军事情报的重要手段，也是实施电子干扰与电子战摧毁的前提。测向则是电子侦察的一个重要指标。 测向的方法主要有最大(最小)信号法、比幅法、比相法、时差法。比幅测向法是一种传统的方法，它的最大优点是价格成本较低，但测向精度较差。因此对它进行深入的研究和采用新的估算方法来提高其测向精度，使性价比达到最优，以满足海军装备的需求。 为提高比幅测向的精度，选用多信道体制，采取相位延时估计法从频域来估算移动天线方向图系列的达到角，同时在具体的工程实现上对天线选取、信号的量化、去摸开关等进行优化，从而满足指标要求。 通过分析推导、计算机模拟以及样机性能指标的测试，结果表明用比幅测向法完全可以满足装备的最终要求。高精度宽开比幅测向方法研究及工程实现，为我海军装备走投入较少、效率较高的发展道路，探索了一条路子。更多还原

【Abstract】 Focusing on the tactical index of EW system-bearing accuracy, this article makes deep-through analysis, comparison and study of the theory basis for traditional direction finding method. A 16-channel monopulse amplitude-comparison direction finding method and new phase-delay estimating method has been proposed to use, through computer’s analog computation and relative measures in actual engineering practices, the bearing accuracy of traditional method has been increased and the service requirement of the EW weapon system and adaptability of equipment satisfied.The electronic warfare is a kind of special but important mode of operations. The technique of electronic warfare contains electronic reconnaissance, electronic jamming, electronic warfare destroying and stealth etc.. The electronic reconnaissance is an important means for military information, and also a prerequisite to conduct electronic jamming and EW destroying. The direction finding is an important index of electronic reconnaissance.The methods of direction finding mainly include maximum (minimum) signal method, amplitude-comparison method, phase-comparison method and time difference method. As a traditional method, the phase-comparison method has a merit of low cost but a demerit of poor bearing accuracy. So, deep-through analysis of the phase-comparison method and adoption of new evaluation methods is to be done to increase the bearing accuracy and achieve the best price performance, satisfying the equipment requirement of Navy.To increase the bearing accuracy of amplitude-comparison, the multi-channel system was chosen, the angle of reaching of moving antenna pattern serial was estimated from the frequency domain using the phase-delay estimating method, and at the same time, the selection of antenna, quantization of signal and touch switches were optimized in concrete engineering practice, and so the requirement of the index was satisfied.After analysis and deduction, computer analog and performance index test of prototype, the results show that the amplitude-comparison method can completely satisfy the last requirement of equipment. The study of the high accurate and wide amplitude-comparison direction-finding method and engineering practice explore a cost-effective way for our Navy’s development.更多还原