ZY-3 is the first civilian high resolution stereo mapping satellite, which has been launched on 9th, Jan, 2012. The aim of ZY-3 satellite is to obtain high resolution stereo images and support the 1:50000 scale national surveying and mapping. Although ZY-3 has very high accuracy for direct geo-locations without GCPs (Ground Control Points), use of some GCPs is still indispensible for high preci...

Tabular calving events occur from Antarctica's large ice shelves only every few decades, and are preceded by rift propagation. We used high-resolution imagery ICESat-2 data to determine the propagation rates for three active rifts on Amery Ice Shelf (AIS; T1, T2, E3) observe of D-28 September 25, 2019 along T1. AIS front advance accelerated downstream T1 in years before calving, possibly increa...

The Ice, Cloud, and land Elevation Satellite-2 (ICESat-2) can measure the elevations of Earth’s surface using a sampling strategy with unprecedented spatial detail. In daytime mountainous areas where signal–noise ratio (SNR) weak beam data is very low, current algorithms do not always perform well on extracting signal photons from (i.e., many were missed). This paper proposes an effective algor...

Forest canopy height is defined as the distance between highest point of tree and ground, which considered to be a key factor in calculating above-ground biomass, leaf area index, carbon stock. Large-scale forest monitoring can provide scientific information on deforestation degradation policymakers. The Ice, Cloud, Land Elevation Satellite-2 (ICESat-2) was launched 2018, with Advanced Topograp...

Several studies have indicated that glaciers in the Qinghai-Tibet plateau are thinning, resulting in reduced water supplies to major rivers such as the Yangtze, Yellow, Lancang, Indus, Ganges, Brahmaputra in China, and south Asia. Three rivers in the upstream of Yangtze River originate from glaciers around the Geladandong snow mountain group in central Tibet. Here we used elevation observations...