Low polarization sensitivity resolution of the new moderate-resolution imaging spectrometer

Linghua Guo; Zhaojun Liu; Jun Gao; Shiping Chen; Ronggang Peng

doi:10.1117/12.577381

10 February 2005 Low polarization sensitivity resolution of the new moderate-resolution imaging spectrometer

Linghua Guo, Zhaojun Liu, Jun Gao, Shiping Chen, Ronggang Peng

Proceedings Volume 5638, Optical Design and Testing II; (2005) https://doi.org/10.1117/12.577381
Event: Photonics Asia, 2004, Beijing, China

Abstract

Radiation of most target scene has the polarization characteristic. Especially, polarized light, which is from the earth and the atmosphere, of visual band, near infrared band, and short wave infrared band is so strong. The polarization degree of blue band and green band is more than 25%. This new moderate resolution imaging spectrometer is a remote sensor for acquiring dynamic spectral and image data from the surface of land, water and from lower atmosphere. The radiance of target scene detected by the remote sensor is the result of polarization characteristic of the remote sensor and the target scene. So, low polarization sensitivity design is the key technology of such remote sensor. We have applied a high efficient scan subsystem, which is new, light, double-sided, to this instrument. Further more, polarization sensitivity was decrease by the additional polarization compensator, the change of optical axis and etc. The engineering model (EM) was completed. Its performance goal is better than required and for 0.4μm≤λ≤2.2μm, the linearly polarized sensitivity is less than 2%.

Citation Download Citation

Linghua Guo, Zhaojun Liu, Jun Gao, Shiping Chen, and Ronggang Peng "Low polarization sensitivity resolution of the new moderate-resolution imaging spectrometer", Proc. SPIE 5638, Optical Design and Testing II, (10 February 2005); https://doi.org/10.1117/12.577381

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