AlSat-3B, Algeria's second Earth observation satellite in the AlSat-3 constellation, launched on January 31, 2026, to provide complementary multispectral imaging capabilities. The satellite is designed to support Algeria's land management and national monitoring programmes, delivering high-resolution Earth observation data for applications including agricultural assessment, urban planning, and environmental surveillance. As part of a paired constellation approach, AlSat-3B works alongside its companion satellite to enhance temporal and spatial coverage of the North African nation.

The China Academy of Space Technology (CASC) operated the launch using a Long March 2C vehicle, a proven medium-lift rocket with a lengthy operational history. The mission lifted off from the Jiuquan Satellite Launch Center in northwestern China, one of the country's primary launch facilities with extensive experience deploying Earth observation and communications satellites for international customers.

The mission achieved success, with AlSat-3B reaching its intended orbit and joining Algeria's growing fleet of indigenous and acquired remote sensing capabilities. The launch reinforced China's position as a key launch service provider for African nations seeking affordable access to space-based Earth observation technology. AlSat-3B's deployment strengthens Algeria's capacity for autonomous monitoring of its territory and natural resources.