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History or image based methods for altitude determination in a radar altimeter
History or image based methods for altitude determination in a radar altimeter
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机译:雷达高度计中基于历史或图像的高度确定方法
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摘要
Methods and apparatus for determining an altitude with an altimeter is provided. One method includes transmitting a signal having a fixed modulation period towards a ground target and then detecting reflected signals off the ground target. The method then implements a single Fast Fourier Transform (FFT) on the detected signals for each modulation period that computes all possible altitudes in real time. A short history of the real time altitude calculations is collected and then the altitude based on the short history of the real time altitude calculations is determined.
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