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讨论了光学退偏器在遥感器中的应用要求和设计原理，并针对海洋水色扫描仪系统要求设计了改进型的Ｌｙｏｔ退偏器，分析了光学退偏器的残余偏振度、光束偏折和角弥散等性能指标。根据系统应用的要求，提出了光学退偏器指标的测试方法，测试结果证明设计的退偏器满足海洋水色扫描仪系统要求。
The application requirements and design principles of the optical depolarizer in the remote sensor are discussed. An improved Lyot depolarizer is designed according to the requirements of the marine aqua scanner system. The residual polarization degree of the optical depolarizer, beam deflection and Angle dispersion and other performance indicators. According to the requirements of system application, a test method of optical depolarizer index is proposed. The test results prove that the designed depolarizer meets the requirements of marine aqua scanner system.