相控阵雷达发射数字波束形成的设计与实现

发布时间：2018-05-18 04:19

本文选题：发射数字波束形成 + 多波束形成　；参考：《西安电子科技大学》2014年硕士论文

【摘要】：发射数字波束形成系统采用数字技术对阵列雷达信号进行幅相加权以形成高质量的发射波束，具有波束控制精确便捷、系统集成度高、抗干扰能力强及可维护性高等突出优点，因而在现代阵列雷达中得到快速发展和广泛应用。本文基于相控阵天线原理建立了发射阵列信号模型，对均匀线阵模型及波束形成进行了仿真分析，介绍了发射数字多波束形成理论，重点讨论了发射数字波束形成系统各部分的设计，包括数字T/R组件、直接数字频率合成、雷达波形产生及波束控制系统，详细阐述了发射数字波束形成系统的工程实现，包括波束控制系统和波形产生模块的软硬件设计及测试，深入探讨了阵列误差对发射数字波束形成系统的影响并根据发射DBF校正原理设计了校正方案，，完成了工程实现及测试，达到了课题研究预期。论文研究并设计实现的发射DBF系统可实现低副瓣发射波束的快速扫描和灵活控制，具有很高的工程实用价值和应用前景。
[Abstract]:Transmitting digital beamforming system uses digital technology to weigh the amplitude and phase of array radar signal to form high-quality transmitting beam, which has the outstanding advantages of accurate and convenient beam control, high system integration, strong anti-jamming ability and high maintainability. Therefore, it has been rapidly developed and widely used in modern array radar. In this paper, based on the principle of phased array antenna, the signal model of transmitting array is established, the uniform linear array model and beamforming are simulated and analyzed, and the theory of transmitting digital multi-beam forming is introduced. The design of various parts of transmitting digital beamforming system, including digital T / R module, direct digital frequency synthesis, radar waveform generation and beam control system, is discussed in detail. The engineering implementation of transmitting digital beamforming system is described in detail. The software and hardware design and test of beam control system and waveform generation module are included. The effect of array error on transmitting digital beamforming system is discussed in depth. The correction scheme is designed according to the principle of transmit DBF correction, and the engineering realization and test are completed. Meet the project research expectations. The research and design of the launch DBF system can realize the fast scanning and flexible control of the low sidelobe transmitting beam, which has high engineering practical value and application prospect.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN958.92

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