光谱调制偏振测量技术是一种新型的偏振调制技术, 通过由消色差/4波片、 多级相位延迟器和偏振器组成的调制模块, 能够把入射光的偏振信息调制到光波的光谱维上, 得到线偏振度和线偏振角呈规律变化的正弦曲线。 设计解调算法对偏振调制后的光谱进行解调, 可以得到目标不同波长处的线偏振度、 线偏振角、 光谱及辐射信息。 文中阐述了光谱调制偏振测量技术的基本原理, 给出具体实现方案。 设计解调算法, 搭建实验平台并进行实验验证。 实验结果表明该技术的正确性及实际应用的可行性。 相对于传统的偏振调制方案, 该方案无运动、 电控部件, 具有体积小、 重量轻的优点, 一次测量即可得到目标的偏振信息, 而不是测得Stokes矢量后再经进一步计算。 本研究为新型空间偏振探测遥感器的开发提供一种新的技术途径。

Spectral Modulation Polarization Measurement technology (SMPM) is a new type of polarization modulation technology, with an achromatic /4 retarder, a multiple-order retarder and a polarizer the polarization information of incident light can be encoded into the spectral dimension, sinusoidal which amplitude scales with the degree of the linear polarization and phase scales with the angle of the linear polarization can be acquired directly. With a dedicated algorithm for the modulated spectrum, we can get degree and angle of the linear polarization, spectral information and radiation information of the target. This paper expounds the basic principle of SMPM and concrete implementation scheme is proposed. Demodulation algorithm is designed before experimental platform are set up. Experiment which verified the correctness on the SMPM has carried on. The experimental results show the correctness and feasibility of SMPM. Compared with traditional polarization modulate techniques no moving parts and electronic components are including in this scheme. It’s also has the advantages of compact and low mass. We can get all the polarization information through one single measurement rather than get Stokes parameters for further calculations. This study provides a new kind of technological approaches for the development of new space polarization detecting sensor.