Spirale is a French government programme to develop an early warning system which will use infrared satellite imagery to detect the flights of ballistic missiles during their boost phase, just after launch. SPIRALE is an acronym which stands for "Système Préparatoire Infra-Rouge pour l’ALErte", literally "infrared preparatory system for alert".
- "Spirale - Keeping an eye on security". Astrium.
|This article about one or more spacecraft of France is a stub. You can help Wikipedia by expanding it.|