2016年4月8日,Space X的猎鹰9号火箭携带了有效载荷从美国佛罗里达州卡纳维拉尔角空军基地成功发射,并且第一级火箭在位于大西洋的漂浮的遥控船上成功着陆[1]。这是轨道火箭第二次实现成功返回。第一次是在2015年12月21日,当时猎鹰9号从卡纳维拉尔角发射,第一级火箭返回发射台[2](图1)。过去,第一级 On April 8, 2016, Space X’s Falcon 9 rocket with payload was successfully launched from the Air Force Base, Cape Canaveral, Florida, USA, and the first-stage rocket successfully landed on a floating, remotely controlled ship in the Atlantic Ocean [ 1]. This is the second time that the orbital rocket has successfully returned. The first was on 21 December 2015, when Falcon 9 was launched from Cape Canaveral and the first stage rocket returned to launch pad [2] (Figure 1). In the past, the first level