A5038849051- Impact of Light on Environment and Health
- GNSS positioning and interference
- Urban Heat Island Mitigation
- Geophysics and Sensor Technology
- Advanced Frequency and Time Standards
- Remote Sensing in Agriculture
Ningbo University
2024
Automatic and accurate detection of clouds cloud shadows is a critical aspect optical remote sensing image preprocessing. This paper provides time series maximum minimum mask method (TSMM) for shadow detection. Firstly, the Cloud Score+S2_HARMONIZED (CS+S2) employed as preliminary shadows. Secondly, we calculate ratio sub-maximum values blue band in series, well sub-minimum near-infrared to eliminate noise from data. Finally, value clear after removal are detection, respectively. A national...
At present, UTC is generated via TAI corporation with more than 500 atomic clocks at about 80 labs. Each lab participating in keeps one UTC(k). In network, GNSS time transfer link, especially GPS the most popular for transfer. For better reliability, other systems would be good backup. BDS and Galileo are newly constructed (in building). Before application of using UTC, evaluation performance should implemented through comparison to developed links such as TWSTFT links. different sites, some...