Author: starpathwp-zyj
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Can SAR Map Floods Without Manual Labels or Threshold Tuning?
In brief: Conventional SAR-based flood mapping often runs into two obstacles: thresholds must be adjusted repeatedly by hand, while supervised learning requires large volumes of labeled data. This paper proposes Felz-CNN, also known as the adaptive unsupervised Felz-CNN segment system (AUFCS). The method first uses Felzenszwalb superpixels to divide a SAR image into many internally…
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What Really Caused Pakistan’s 2022 Floods: Extreme Rainfall, Snowmelt, or Glacial Lake Outburst Floods?
In brief: Published in Remote Sensing of Environment, this study does more than use Sentinel-1 data to map Pakistan’s catastrophic 2022 floods. It seeks to answer three broader questions: How much of the country was flooded? Why was the disaster so severe? And was it worse than the major flood of 2010? The authors developed…
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Successful Launch Does Not Mean Delivery Is Complete: Key Stages of In-Orbit Satellite Delivery
On September 13, during the 2026 China International Fair for Trade in Services (CIFTIS), Beijing Kaiyun United Information Technology Group Co., Ltd. (“Kaiyun Group”), PICC Property and Casualty Company Limited Zhejiang Branch, Beijing Hangbiao Times Testing and Certification Co., Ltd., and Sipai (Beijing) Insurance Brokerage Co., Ltd. signed a strategic cooperation agreement to develop commercial…
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Fifth International Summit on Large-Scale Beidou Applications Highlights Everyday Uses and Global Cooperation
The fifth International Summit on Large-Scale Beidou Applications concluded Sept. 16 in Zhuzhou, Hunan province, after two days of demonstrations spanning consumer devices, drone operations and overseas projects. Organizers unveiled 51 products, technologies and application solutions, while 41 industry and research cooperation projects involving a total planned investment of 5.54 billion yuan were signed. The…
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China Launches Tianyi-51 and Tianyi-52 Satellites on Kuaizhou-11 Rocket
At 10:40 a.m. Beijing time on September 17, 2026, China launched the Tianyi-51 and Tianyi-52 satellites aboard a Kuaizhou-11 Y3 rocket from the Jiuquan Satellite Launch Center. Both satellites entered their planned orbits, completing the mission successfully. The satellites form a commercial, mid-inclination interferometric synthetic aperture radar (InSAR) pair designed to monitor changes in the…
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Long March 12 Successfully Launches the 25th Group of Low Earth Orbit Internet Satellites
At 8:32 a.m. Beijing time on September 17, 2026, China launched the 25th group of low Earth orbit satellite internet spacecraft aboard a Long March 12 rocket from the Hainan Commercial Space Launch Site. The satellites entered their planned orbit, completing the mission successfully. Developed under the leadership of the Eighth Academy of China Aerospace…
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Pinglu Canal Officially Opens to Shipping: Satellite Images Capture China’s Project of the Century
China’s 134.2-kilometer Pinglu Canal officially opened to navigation on September 16, 2026, creating a direct waterway between the Xijiang River system and the Beibu Gulf. Satellite imagery released by the China Centre for Resources Satellite Data and Application provides a corridor-wide view of the RMB 72.7 billion project and records the construction of new channels,…
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Gravity-1 Launches Nine Satellites on Fourth Flight, Sets Chinese Sea-Launch Records (Video)
Orienspace’s Gravity-1 Y3 solid-propellant rocket launched eight Qianfan broadband satellites and an EUHT technology-demonstration satellite from the East China Sea on September 16, 2026, completing the vehicle’s fourth successful flight and setting new Chinese records for payload mass and orbital altitude on a single sea-launch mission. The rocket lifted off at 6:00 a.m. Beijing time,…
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From Snow and Ice Retreat in 2010 to an Ice Avalanche in 2016 and Crack Coalescence Two Days Before the Disaster: How Satellites Reconstructed a Decade of Progressive Rock-Slope Failure
The Chamoli slope did not suddenly fail on 7 February: Satellite data reveal a decade of progressive deterioration before the rockslide. At a glance: The Chamoli disaster of 7 February 2021 appeared to be a sudden rock–ice avalanche in the high mountains. This paper, however, focuses not on how far the post-failure flood traveled, but…
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Zhuque-2E Y7 Launches 10 Qianfan Satellites in Single Mission (Video)
LandSpace successfully launched a Zhuque-2E Y7 carrier rocket at 2:26 p.m. on September 15 from the Dongfeng Commercial Space Innovation Pilot Zone, placing 10 satellites for Qianfan Polar Orbit Group 19 into their designated orbits. The successful one-rocket, 10-satellite mission advanced the deployment of the Qianfan constellation while reinforcing Zhuque-2E’s role in China’s expanding commercial…