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本文通过对飞行数据的分辨率、采样率、样本长度及传感器的动特性对气动参数辨识的影响的研究,确定了用于气动参数辨识的量测设备的分辨率及采样率均不能低于某一下限,否则参数的估计不可信。并以表格的形式给出了不同分辨率、采样率、样本长度下的估计结果。传感器时间延迟对参数估计的影响较大,但减小传感器时间常数不可能从根本上提高参数估计的精度。
Through the study of the influence of flight data resolution, sampling rate, sample length and dynamic characteristics of the sensor on the aerodynamic parameter identification, the resolution and sampling rate of the measuring equipment used for aerodynamic parameter identification should not be lower than some A limit, or the estimation of parameters is not credible. And in the form of table gives the different resolution, sampling rate, sample length of the estimated results. The time delay of the sensor has a great influence on the parameter estimation, but reducing the sensor time constant can not fundamentally improve the accuracy of the parameter estimation.