The Oko early-warning satellite system

Assembled from 14 blocks · 1 evidence · 4 related

1. Story
2. The Soviet space-based missile launch detection system, which watched American ICBM fields for the infrared flare of a rocket motor and reported to a ground command centre south of Moscow. Its design reflects a constraint: Soviet satellites used highly elliptical Molniya orbits rather than the geostationary belt, and observed the missile fields obliquely against the edge of the Earth rather than looking straight down at them, which was intended to reduce false alarms from reflected sunlight. It did not eliminate them. On 26 September 1983 the system reported a small American launch, and the cause was subsequently attributed to sunlight reflecting from high cloud in an alignment the sensors had not been designed for. The episode is the clearest documented case of the general problem: an early-warning system exists to compress the time between detection and decision, and compressing that time is exactly what makes a false report dangerous.
3. Knowledge
4. The Oko early-warning satellite system
5. Serpukhov-15
6. Connections
7. Serpukhov-15
8. Stanislav Petrov
9. Korean Air Lines Flight 007 is shot down
10. The Oko system reports a false American missile launch
11. The Oko early-warning satellite system
12. The Oko system reports a false American missile launch
13. Evidence
14. Named as the general narrative authority behind this pack's framing of the period, and cited in the Journey's own declared references. V55 verification basis: NOT consulted in this session. It is also a work with a definite interpretive position — broadly, that Soviet conduct drove the confrontation and that Western pressure and Soviet internal failure ended it — and this pack cites it as one reading rather than as a neutral summary.