LOTUSat 1, 2

LOTUSat 1 [NEC]

LOTUSat 1 (also known as JV-LOTUSat) are Vietnamese radar earth observing satellites to contribute to measures against natural disasters and climate change in Vietnam. The first satellite will be built in Japan by NEC, while the second is planned to be built in Vietnam.

The cooperation was already agreed in 2011, but the contract to built LOTUSat 1 was eventually signed in April 2020.

The LOTUSat-1 Earth observation satellite will be equipped with Synthetic Aperture Radar (SAR) and developed based on NEXTAR, a standard satellite system that leverages NEC's long-standing expertise and enables rapid delivery times, reduced costs, and high functionality. The LOTUSat-1 will also feature systems modeled after the ASNARO 2 radar observation satellite that is currently in operation.

LOTUSat can work in three observation modes:

• Spotlight mode: Resolution 1 m or less, observation range: 10 km or more
• Strip Map Mode: Resolution 2 m or less, observation range 12 km or more
• Scan SAR mode: Resolution 16 m or less, observation width 50 km or more

LOTUSat 1 will be launched in 2023 on a Japanese Epsilon-S.