北斗导航终端射频模块自动测试系统研究

发布时间：2018-08-25 11:49

【摘要】：北斗卫星导航是由我国自主研发的为我国提供导航定位服务的导航系统。在北斗卫星导航系统中,射频模块组件作为导航系统终端重要的组成部分,直接影响着导航系统正常的发射和接收,因此,对射频模块的各项指标的要求非常严格。射频模块指标主要是指通道增益、输入输出驻波比、噪声系数、中频3dB带宽,发射功率等,只有这些指标测量值符合规定的要求,才能保证射频模块的正常工作,进而保证整个导航终端的正常运行。所以,如何对这些射频指标进行准确、快速有效的测试成为一个亟待深入研究的问题。为解决对射频模块快速有效测试的问题,本文研究了北斗导航终端射频模块的自动测试系统,本着提高效率、减少人为影响测试精度的思想,利用VB软件开发了基于频谱仪与GPIB的自动测试系统。此系统主要是对北斗射频模块收发部分的一些指标进行测试,由于篇幅有限,只研究仅用频谱仪就能测试的通道部分和功放部分的一部分指标。自动测试系统主要介绍了自动测试系统整体方案设计和分别介绍了硬件测试平台的搭建和软件部分的模块划分等。自动测试系统设计完成且校准工作完成后,将这些指标分别用手动和自动测试的方法进行测试,将测试结果进行对比,总结出自动测试系统的优势及其改进方案。本文以河北晶禾电子公司自主研发的射频模块为被测对象,验证了自动测试系统的实用性、可靠性和节省人力物力的特点,具有研究价值和社会价值。
[Abstract]:Beidou satellite navigation is a navigation system independently developed by our country to provide navigation and positioning services for our country. In Beidou satellite navigation system, radio frequency module component, as an important part of navigation system terminal, directly affects the normal transmitting and receiving of navigation system. Therefore, the requirements of radio frequency module are very strict. The radio frequency module index mainly refers to the channel gain, the input and output standing wave ratio, the noise coefficient, the if frequency 3dB bandwidth, the transmission power and so on. Then ensure the normal operation of the whole navigation terminal. Therefore, how to accurately, quickly and effectively test these radio-frequency indicators has become an urgent problem to be studied. In order to solve the problem of fast and effective testing of radio frequency module, this paper studies the automatic test system of radio frequency module in Beidou navigation terminal. An automatic test system based on spectrometer and GPIB is developed by using VB software. This system mainly tests some indexes of the transceiver part of the Beidou RF module. Because of the limited space, we only study some indexes of the channel part and the power amplifier part which can be tested by using only the spectrometer. The automatic test system mainly introduces the design of the whole scheme of the automatic test system and the construction of the hardware test platform and the module partition of the software part respectively. After the design of the automatic test system is completed and the calibration work is completed, these indexes are tested by manual and automatic test methods, and the test results are compared, and the advantages of the automatic test system and its improvement scheme are summarized. In this paper, the radio frequency module developed by Hebei Jinghe Electronics Company is taken as the test object, which verifies the practicability, reliability and saving of manpower and material resources of the automatic test system. It has the research value and the social value.
【学位授予单位】：河北科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN967.1

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