研究目的
Investigating the feasibility of detecting the red edge utilizing a consecutive and high spectral resolution active remote sensing technique, specifically, the liquid crystal tunable ?lter (LCTF)-based HSL.
研究成果
The LCTF-HSL system was effective for red edge detection, with similar results obtained from both active and passive measurements. The system demonstrated potential for vegetation parameter estimation and other remote sensing applications.
研究不足
The spectral power density from 450 to 550 nm was considerably lower than that from 550 to 720 nm, and the sensitivity of the silicon APD sensor in the spectral range from 450 to 550 nm was inferior. The magnitude of the re?ectance from the HSL is slightly higher than the nominal value, especially in the red band spectrum.