2021-02-25 DARE MIGHTY THINGS|数字时代的信息编码与解密

图一：毅力号上的信息编码：“Dare Mighty Things”[1]。

"Far better is it to dare mighty things, to win glorious triumphs, even though checkered by failure ... than to rank with those poor spirits who neither enjoy nor suffer much, because they live in a gray twilight that knows not victory nor defeat."  -- Roosevelt 1899[1]

The inner portion spells out "DARE MIGHTY THINGS," with each word located on its own ring of gores. The outer band of the canopy provides GPS coordinates for NASA's Jet Propulsion Laboratory in Southern California, where the rover was built and the project is managed. [1]

原来还可以这样传递信息啊！

当时看到这个降落伞的图案的时候，心里闪过一丝疑问：这谁设计的图案，这么扎眼！当时以为是为了更好的拍摄，才采取这么色彩分明的图案。

原来是藏着下面的两个信息编码啊！

1. NASA 座右铭：“Dare Mighty Things”。

2. NASA JPL实验室在南加州的GPS位置坐标。

原来还可以这样玩！

借用涂勇同学的一句话：“你们知识分子真会玩！”[Chuckle]

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图二【1】

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原来，这还不是NASA第一次这样玩信息编码了。早在好奇号的时候，他们就这样玩过一回啦！

好奇号的车辙也是编码：“JPL”【2】

Reading the Rover's Tracks

The straight lines in Curiosity's zigzag track marks are Morse code for JPL, which is short for NASA's Jet Propulsion Laboratory in Pasadena, Calif., where the rover was built and the mission is managed. The "footprint" is more than an homage to the rover's builders, however. It is an important reference mark that the rover can use to drive more precisely via a system called visual odometry.

The Morse code, imprinted on all six wheels, is: .--- (J), .--. (P), and .-.. (L), as indicated in this image.

Image credit: NASA/JPL-Caltech

[2]

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相关文献：

[1]. Mars Decoder Ring

[2].  https://www.nasa.gov/mission_pages/msl/news/msl20120829f.html

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好奇问一下，为什么下图是橙色，而着陆拍到的上图是红色。
是相机后期处理的效果，还是实际拍到的颜色就是不一样的？
地球与火星的这两个不同环境、不同大气的差异，光在这两个不同的大气介质中的传播，能带来多大的色彩差别呢？

如果是将拍下来的照片，修正到相同条件下（相同相机、相同距离、相同角度、相同温度等），是不是可以问：到达相机的反射光，在传播路径上，经过的大气介质不一样，相机会拍到怎么不一样的颜色？

CMYK colors is a combination of CYAN, MAGENTA, YELLOW , and BLACK. Computer screens display colors using RGB color values. Printers often presents colors using CMYK color values.【3】

[3]. Colors CMYK - W3Schools