根据相对位置和起飞轨迹，提前设定好的动作啊

【 在 hsz76 的大作中提到: 】
: 水木牛逼，链接不知道触发什么关键字无法发出来，你照着下面文字搜NASA链接吧
: The other thing that I'll explain to you how it worked, and it's a little interesting, is you've seen this picture where the lunar module lifts off and the camera follows it. Well, on 15, the motor burned out and we couldn't do that. On 16, the rover was not parked in the right place, so consequently we missed it.
: Now, the way that worked was this. Harley Weyer, who worked for me, sat down and figured what the trajectory would be and where the lunar rover would be each second as it moved out and what your settings would go to. That picture you see was taken without looking at it at all. There was no watching it and doing anything with that picture. As the crew counted down, that's a [Apollo] 17 picture you see, as [Eugene A.] Cernan counted down and he knew he had to park in the right place because I was going to kill him, he didn't—and Gene and I are good friends, he'll tell you that—I actually sent the first command at liftoff minus three seconds. And each command was scripted, and all I was doing was looking at a clock, sending commands. I was not looking at the television. I really didn't see it until it was over with and played back. Those were pre-set commands that were just punched out via time. That's the way it was followed. That's the way it followed it.
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