Checking Research on Data Processing Method of Aircraft Environment Temperature

The research on data processing method of aircraft cabin temperature in related literature was checked by compiling the processing and analyzing software platform of aircraft cabin temperature.The results show that piecewise number in independent variable span and spline order number should be selected appropriately in order to obtain the minimum error of spline approximating function.If the piecewise number and spline order number are not selected appropriately,the error of spline approximating function with piecewise treatment may be bigger than that without piecewise treatment in whole span when the spline order numbers are same for both two conditions.