OVERVIEW: Second-generation satellite visual cameras improved resolution and data transmission capabilities over first-generation systems, enabling more detailed Earth observation for military and civilian applications.

GENERAL DESCRIPTION: Developed during the late 1970s to 1990s, second-generation satellite visual cameras transitioned from film-based to electronic sensors, allowing near-real-time image transmission. Operating mostly in low to medium Earth orbit, these systems provided enhanced spatial resolution and greater coverage, supporting refined reconnaissance, environmental monitoring, and mapping.

ROLE SUMMARY:
Category: Electro-Optical Imaging / Reconnaissance
Primary Use: High-resolution Earth observation and target identification
Function: Passive imaging in the visible spectrum with electronic data relay
Platform: Low and Medium Earth Orbit satellites

See Specific information under [Sensors/EW] and [Properties] sections.

SOURCE:
Space reconnaissance program reports
Satellite imaging technology studies