Author Affiliations
1Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, HFIPS,Chinese Academy of Sciences, Hefei 230031, China2University of Science and Technology of China, Hefei 230026, China3China Center for Resources Satellite Data and Application, Beijing 100094, Chinashow less
Fig. 1. Aerial view of Songshan Remote Sensing Calibration Field
Fig. 2. Model (a) and picture (b) of automated reflectance monitoring spectrometer
Fig. 3. Model (a) and picture (b) of visible-shortwave infrared hyperspectral irradiance meter
Fig. 4. Verification process of the reflectance accuracy
Fig. 5. Measurement comparison of two methods in Area Ⅰ. (a) Comparison of two reflectance; (b) measurement deviation
Fig. 6. Measurement comparison of two methods in Area Ⅱ. (a) Comparison of two reflectance; (b) measurement deviation
Fig. 7. Measurement comparison of two methods in Area Ⅲ. (a) Comparison of two reflectance; (b) measurement deviation
Fig. 8. All day total irradiance in different bands measured by HIM-002 on October 29, 2019
Fig. 9. All day total-irradiance of HIM-002 in different bands. (a) June 3, 2020; (b) July 27, 2020
Fig. 10. Target reflected radiance data measured by ARM002 at different time
Fig. 11. The changes of reflectance in the Area Ⅱ. (a) In the whole bands; (b) some wavelengths
Fig. 12. The changes of reflectance in the Area Ⅲ. (a) In the whole bands; (b) some wavelengths
Fig. 13. The standard deviation of reflectance in the field. (a) Area Ⅱ; (b) Area Ⅲ
Instrument | ARMS | HIM |
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Spectral range/nm | 350~1600 | 400~2400 | FWHM | ≤ 4 nm(@350~950 nm) ≤ 15 nm(@950~1600 nm) | ≤ 4 nm (@400~950 nm) ≤ 15 nm (@950~1650 nm) ≤ 20 nm (@1650~2400 nm) | Functions | 1) to automatically measure the reflected radiance of surface in a continuous spectrum; 2) to automatically observe in the wild; 3) the function of self-cleaning reference board; 4) self-calibration based on the reference board. | 1) to automatically measure the total irradiance; 2) to automatically measure the sky light diffuse irradiance; 3) to automatically obtain the direct solar irradiance; 4) to automatically obtain the ratio between total and diffuse irradiance. | Data transmission | 4G | 4G | Operating temperature/℃ | -30~+60 | -30~+60 |
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Table 1. Main parameters and functions of ARMS and HIM