本文详细分析了采用周期自动校准技术的多普勒导航雷达测高装置自校时的信号关系。在数学分析的基础上,作者认为,为保证在高度测量时稳定获取自校信号,应调节馈线的长度(微波相位)。实验证明,分析是正确的。 This paper analyzes in detail the signal relationship of the Doppler radome elevation measuring device self-calibrated using the periodic automatic calibration technology. On the basis of mathematical analysis, the author believes that in order to ensure stable acquisition of self-calibration signal in height measurement, the length of feed line (microwave phase) should be adjusted. Experiments show that the analysis is correct.