ALOS-3
Japanese Earth observation satellite lost on its launch.
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Advanced Land Observing Satellite 3 (ALOS-3), also called Daichi 3, was a 3-ton Japanese satellite launched on March 7 2023 which failed to reach orbit. It was to succeed the optical sensor PRISM carried on the ALOS satellite, which operated from 2006 to 2011. The satellite was destroyed by use of Flight Termination System after a failure of the second stage engine to ignite on the first launch of the H3 rocket.
Mission and sensors
If successfully launched, ALOS-3 would have been an Earth observation satellite for monitoring natural disasters and cartography. It carried OPS, a multi-band optical camera upgraded from PRISM, capable of observing a 70 km wide strip.
Observation modes of ALOS-3
The default mode observed a 70 km wide by 4,000 km long strip along the orbital path. Stereo mode acquired a three-dimensional picture of a point from two directions. Point observation mode could observe any point in Japan within 24 hours of request by pointing the satellite up to 60 degrees in all directions from nadir. Attitude control allowed continuous observation of an area not along the trajectory by changing the direction of observation.
More in JAXA
Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: ALOS-3 (CC BY-SA 4.0).
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