Cosmic rays and Geigertubes have been combined in a new altimeter to tell the pilots what their altitudes are.
宇宙线兴盖氏管已过连接成为一种新的高度计用来告诉飞行员他们的高度是多少。
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Finally, the application of this kind of signal in the radar altimeter is discussed in detail combined with echoes characteristics of a radar altimeter, and simulation results are also given.