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劳兰系统诞生于第二次世界大战期间,在应用中逐渐成熟。1974年美国决定采用劳兰-C作为政府提供的正式无线电导航系统,开始用于美国沿岸汇流区和大湖区,以后逐渐成为世界上很受重视的无线电导航系统。
Loran system was born during the Second World War, gradually mature in the application. In 1974, the United States decided to adopt Lorain-C as the official radionavigation system provided by the government and began to be used in the confluence areas of the United States coast and the Great Lakes region. It has gradually become the most important radio navigation system in the world.