强度调制偏振光谱仪傅里叶变换解调原理研究

针对强度调制新型偏振光谱仪,研究了基于傅里叶变换法实现偏振光谱信息解调的可行性.结合强度调制偏振光谱仪实现偏振光谱信息调制的机理,给出了采用傅里叶变换法实现偏振光谱信息解调过程的完整数学推导,并对解调过程进行了计算机仿真模拟.模拟结果表明:基于傅里叶变换的解调方法可以高保真获取待测光辐射的偏振光谱信息,将该方法应用于强度调制偏振光谱仪偏振光谱信息的解调是可行的.

Study on the Fourier Transform Demodulation Theory of the Spectropolarimeter Based on Intensity Modulation

The feasibility study is accomplished using the Fourier Transform (FT) method to demodulate the spectropolarimetric information for the new spectropolarimeter based on intensity modulation. The whole progress of mathematics derivation about it is proposed by analysing the modulation principle in the new spectropolarimeter. The simulation experiment on the demodulation progress is also achieved. The experimental results show that the high fidelity spectropolarimetric information from the targets can be demodulated when the FT method is used and it is an ideal and feasible method.