现代小卫星分为1千克~10千克重的纳型卫星和11千克~50千克重的微型卫星两类,近10年来发展速度迅猛,特别是最近3年,每年的发射数量都在100颗以上,其中纳型卫星的发射量占主要部分,而这其中1千克~3千克和4千克~6千克重的纳型卫星又占到整个纳型卫星发射量的90%。预计到2018年小卫星的年发射量将达近400颗,到2022年将达近600颗。这意味着未来全世界航天器每年小卫星的发射量将占总发射量的一半或一半以上。 Modern small satellites are classified into 1 types of nanosatellites weighing between 1kg and 10kg and microsatellites of 11kg to 50kg. In recent 10 years, the development of these small satellites has been rapid. In particular, the number of launches in each of the past three years has exceeded 100 , Of which the Nano-type satellites account for the major part of the emission, while the Nano-satellites weighing 1 kg to 3 kg and 4 kg to 6 kg account for 90% of the entire satellite emission. It is estimated that the number of small satellites to be launched by 2018 will reach nearly 400 annually, reaching nearly 600 by 2022. This means that future small satellites in spacecraft around the world will emit half or more of the total emissions each year.