Data was temporarily stored on board using video tape recorders, and subsequently down-linked to the ground stations via the Luch GEO satellite. The sensor was a 3 GHz (10 cm) S-band Synthetic Aperature Radar (SAR) that used two 1.5 x 15 m slotted waveguide antennas to obtain a resolution of 15 meters per pixel. Almaz-1 was designed and manufactured and operated by NPO Machinostroenye. The Almaz program had its origins in 1981, when the spaceraft was originally designed as a military reconnaissance craft. The interior was pressurized by nitrogen to sea level. The spacecraft used reaction wheels to maintain attitude and 3-axis stabilization. The Almaz-1 spacecraft had two 100 m**2 solar panels and batteries to provide power.
The Almaz ("diamond") spacecraft design was based on the MIR/Salyut manned orbital station and a class of Heavy Cosmos military spacecraft (Cosmos 929).
The Almaz-1 was a satellite dedicated to providing radar imaging capabilities used in geophysical, agricultural, geological and environmental applications.
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