Its two satellites, flying half a kilometre apart, will communicate with one another using laser telemetry.

ECONOMIST: Birds of a feather

Kwajalein atoll, in the Marshall Islands, bristles with radar, optical sensors, telemetry-receiving stations and other ballistic-missile testing equipment.

ECONOMIST: A new agreement for America's missile range

The industry is making progress here with even more evolved metrics powered by providers such as Telemetry.

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