中文摘要：

湍流是影响飞行安全的重要因素，在利用机载气象雷达进行检测时，通常是通过回波信号的谱宽来判断目标的。但是回波信号的谱宽不仅与气象目标本身有关，还与雷达参数有关，检测时需要进行定标。从大气湍流微粒间相关性的角度讨论了机载气象雷达中湍流的定标问题。不考虑相关性时，通过公式推导，证明目标的方位角和距离等因素对于谱宽的测量是没有影响的。考虑大气湍流微粒间的相关性时，引入大气湍流的相关模型，研究了目标方位以及飞机速度对于谱宽的影响，并通过仿真给出了定性分析。

英文摘要：

Turbulence can bring aviation transportation devil dream. In airborne weather radar, the spectrum width of the radar echo is generally used to judge weather targets. The spectrum width of the echo correlates with many factors, including the spectrum of weather targets and the parameters of radar. Calibration is indispensable. In this paper, turbulence calibration is researched in the condition of considering correlativity among atmospheric turbulence particles. Firstly, without considering the correlativity, it is deduced that the azimuth and distance of targets don＇t affect the measured spectrum width. Secondly, considering the correlativity among atmospheric turbulence, it is verified that the preceding factors must be considered. And qualitative analysis is given.