摘要
波束宽度是微波着陆模拟器(Microwave Landing Simulator,MLS)的重要参数,对波束宽度参数进行定期校准非常必要.文中研究了 MLS输出的波束宽度参数的校准方法,重点研究了信号的提取与解算.首先,对MLS输出微波信号进行采集和处理,获取模拟器输出的飞行器与着陆设备之间相对位置和角度相关的原始数据,对原始数据进行处理和解算;其次,针对波束宽度参数,实现了往扫描波束和返扫描波束的脉冲3 dB点的提取.最后,通过实际应用验证所提出的方法,评估其在MLS中的有效性和可靠性,并对波束宽度的校准进行了不确定度分析评定.研究成果可为MLS的波束宽度参数校准提供新的方法和技术支持.
Abstract
The beam width is an important parameter of the MLS(Microwave Landing Simulator),and it is essential to regularly calibrate this parameter.The calibration method for this parameter output by the MLS is studied,focusing on the extraction and calculation of the signal.Firstly,the microwave signal output by the MLS is collected and processed to obtain the raw data related to the relative position and angle between the simulated aircraft and the landing equipment.The raw data is then processed and calculated.Secondly,for the beam width parameter,the extraction of the pulse 3 dB points of the forward scan beam and the return scan beam is implemented.Finally,the proposed method is verified through practical applications to assess its effectiveness and reliability in the MLS.The uncertainty analysis of the calibration of the beam width is carried out.The results provide new methods and technical support for the calibration of the beam width parameter in the MLS.
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