首页|毫米波宽带调频连续波信号的全波形计量校准技术研究

毫米波宽带调频连续波信号的全波形计量校准技术研究

Full Waveform Calibration Technique for Millimeter-Wave Wideband FMCW Signals

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为了更好地满足毫米波汽车雷达领域对调频连续波(FMCW)信号测试设备的校准需求,提升针对毫米波宽带复杂模拟调制信号的计量和测试能力,构建了频域全波形计量标准装置和被校FMCW测试设备的混合测量系统,利用二者对自定义毫米波FMCW信号的原位、同步测量,实现对商用仪表的校准和性能验证.在 24 GHz和60 GHz典型毫米波雷达频段,充分对比了不同测量方法和设备的性能差异.实验结果表明,频域全波形计量方法优于相关商用仪器,在 200 MHz窄带和 2 GHz宽带条件下的线性调频偏差测量结果均小一个数量级,具备开展校准和性能验证的技术条件.
To address the calibration needs of Frequency Modulated Continuous Wave(FMCW)signal testing equipment in millimeter-wave automotive radar applications and enhance measurement capabilities for complex analog-modulated signals in millimeter-wave broadband,we developed a hybrid measurement system.This system combines a frequency-domain full waveform metrology setup with FMCW testing equipment under calibration.By conducting in-situ,synchronous measurements of custom millimeter-wave FMCW signals,we achieved calibration and performance verification of commercial instruments.We thoroughly compared the performance of different measurement methods and equipment in the typical millimeter-wave radar frequency bands of 24 GHz and 60 GHz.Experimental results demonstrate that the frequency-domain full waveform metrology method outperforms relevant commercial instruments.The FMCW chirp deviation measurements under both 200 MHz narrowband and 2 GHz wideband conditions were an order of magnitude more precise,meeting the technical requirements for calibration and performance verification.

metrologyfull waveform metrologyfrequency-modulated continuous wave(FMCW)magnitude calibrationphase calibrationfrequency-domain measurement

何昭、徐清华、刘雪菲、张亦弛

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中国计量科学研究院,北京 100029

先进溯源技术创新中心,北京 100029

计量学 全波形计量 调频连续波 幅度校准 相位校准 频域测量

国家重点研发计划项目国家重点研发计划项目国家重点研发计划项目

2022YFF06048022022YFF06044002017YFF0206202

2024

10.12338/j.issn.2096-9015.2024.0126

计量科学与技术
中国计量科学研究院

计量科学与技术

影响因子：0.187
ISSN：2096-9015
年,卷(期)：2024.68(8)