The polarization measurement instrument of land objects is a key element of the polarization remote sensing research,
especially for the polarized spectral measurement. The current non-real time and partial polarization spectral
measurement cannot meet the need of study. In this paper, a real time full-Stokes spectro-polarimeter with Deuterated
Potassium Dihydrogen Phosphate (KD*P) crystals was developed in lab. The polarimeter, consisting of two KD*Ps and
a fixed retarder and a polarizer, can measure the full Stokes vector with a flexible modulation frequency 1Hz-1kHz, and
has the balanced polarimetric efficiencies at a wide spectra band of 400-900 nm. The polarimeter was calibrated with an
instrument calibration unit (ICU) to determine the instrument matrix X of each band using a non-linear least square
fitting method, the results showed that the measuring accuracy of the full-Stokes spectro-polarimeter is better than 0.02
over the entire spectra band after calibration. Besides, Rohdea japonica is measured and analyzed to obtain their full
polarization properties, and the results demonstrated that the circular polarization parameter V is not small enough to be
neglected but show significant band features.
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