亳米波宽带角跟踪接收机研究与实现
发布时间：2019-04-27 18:08
【摘要】：毫米波(60GHz)频段具有大气衰减大、可用频带宽等特点。毫米波星间链路,能通过地面大气层屏蔽电磁波干扰,防止有用信号被地面非法用户侦察接收,实现空间保密通信,是星间链路技术的发展趋势。但是,随着工作频段提高,星间链路天线波束宽度变窄,要求天线指向更精确,只靠程控跟踪无法达到要求,通过天线的自动捕获跟踪建立星间数据传输链路成为毫米波星间链路的关键技术。角跟踪接收机是自动跟踪系统中的重要设备。本文在研究了自跟踪体制、单通道单脉冲角跟踪系统和角跟踪接收机原理基础上,对毫米波频段的宽带角跟踪接收机的关键指标及实现方式进行了研究,确定整机方案,开展射频前端关键模块设计。对从宽带信号中提取角误差信号的方法及实现途径进行了研究；最后完成射频前端研制调试,并进行测试：以FPGA为主搭建了硬件平台,在平台上对提出的角误差信号处理算法进行了实现与验证；进行整机联调,并对整机性能进行详细测试,获得具体的实验数据,实验结果验证了本文提出的整机方案的可行性和正确性。
[Abstract]:Millimeter wave (60GHz) band has the characteristics of large atmospheric attenuation and wide available band. Millimeter wave inter-satellite link can shield electromagnetic wave interference through the ground atmosphere, prevent useful signals from being reconnoitred and received by illegal users on the ground, and realize space secure communication, which is the developing trend of inter-satellite link technology. However, with the increase of the operating frequency band, the beam width of the inter-satellite link antenna becomes narrower, and the antenna direction is required to be more accurate, which cannot be achieved by program-controlled tracking alone. It is the key technology of millimeter wave inter-satellite link to set up the inter-satellite data transmission link through the automatic acquisition and tracking of the antenna. Angle tracking receiver is an important equipment in automatic tracking system. On the basis of studying the principle of self-tracking system, single channel single pulse angle tracking system and angle tracking receiver, this paper studies the key index and realization mode of wideband angle tracking receiver in millimeter wave frequency band, and determines the scheme of the whole system. Develop RF front-end key module design. The method of extracting angle error signal from wide band signal and the way to realize it are studied in this paper. Finally, the RF front-end development and debugging are completed and tested: the hardware platform based on FPGA is built, and the proposed angular error signal processing algorithm is realized and verified on the platform; The performance of the whole machine is tested in detail, and the concrete experimental data are obtained. The experimental results verify the feasibility and correctness of the whole machine proposed in this paper.
【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】：TN927.2
本文编号：2467200
[Abstract]:Millimeter wave (60GHz) band has the characteristics of large atmospheric attenuation and wide available band. Millimeter wave inter-satellite link can shield electromagnetic wave interference through the ground atmosphere, prevent useful signals from being reconnoitred and received by illegal users on the ground, and realize space secure communication, which is the developing trend of inter-satellite link technology. However, with the increase of the operating frequency band, the beam width of the inter-satellite link antenna becomes narrower, and the antenna direction is required to be more accurate, which cannot be achieved by program-controlled tracking alone. It is the key technology of millimeter wave inter-satellite link to set up the inter-satellite data transmission link through the automatic acquisition and tracking of the antenna. Angle tracking receiver is an important equipment in automatic tracking system. On the basis of studying the principle of self-tracking system, single channel single pulse angle tracking system and angle tracking receiver, this paper studies the key index and realization mode of wideband angle tracking receiver in millimeter wave frequency band, and determines the scheme of the whole system. Develop RF front-end key module design. The method of extracting angle error signal from wide band signal and the way to realize it are studied in this paper. Finally, the RF front-end development and debugging are completed and tested: the hardware platform based on FPGA is built, and the proposed angular error signal processing algorithm is realized and verified on the platform; The performance of the whole machine is tested in detail, and the concrete experimental data are obtained. The experimental results verify the feasibility and correctness of the whole machine proposed in this paper.
【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】：TN927.2
【参考文献】
相关硕士学位论文 前1条
1 黄军恒;X波段锁相介质振荡器的设计[D];电子科技大学;2008年
，本文编号：2467200
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