用对比度表征成像光谱仪垂直扫描方向传递性能的探讨

The Study of Transfer Performance of Scanning Imaging Spectrum System in Sampling Direction Described by Contrast Transfer Function

首次由单元探测系统的像方线扩散函数ＬＳＦ出发得到多元探测系统空间采样方向系统的特征矩阵，并由此得到已知正弦波输入所对应的系统输出，从另一个侧面证明了系统在这一方向上不具有调制传递函数ＭＴＦ存在的条件。

Characteristic matrix of multi detector imaging spectrum system in its spacial sampling direction is derived firstly from the LSF of one detector system by numerical calculation,using it we can obtain the output of system under known sine wave input,it is also proved that there exists no MTF in this direction of the system,but the contrast transfer function will reflect the transfer performance of system to sine signals with different periods well.