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一、概述低频多卜勒信号在时间轴上的波形是和噪音相类似的杂乱波形,而在频率轴上的频谱图形则具有类高斯分布(如图1所示)。其中心频率fd与运动载体的速度成正比。为了确定运动载体的速度,在以往的多卜勒导航
I. Overview Doppler low-frequency signals on the time axis of the waveform and the noise is similar to the clutter waveform, while the spectrum of the frequency axis has a Gaussian distribution (Figure 1). Its center frequency fd is proportional to the speed of the moving carrier. In order to determine the speed of the moving carrier, previous Doppler navigation