The model of radar target is composed of distance, bearing, speed, heading and amplitude of echo, fluctuation.
目标模型包括船舶的距离、方位、速度和回波幅度、幅度起伏。
The wholesale markets are sweeping enough to echo each other with peripheral product markets, and they show the fluctuation of the price of domestic textile.
绍兴纺织服装类专业市场规模较大，与周边专业市场遥相呼应且反映国内纺织品价格的变化。
The contrastive experiment of back-scattering echo and beacon angle-of-arrival fluctuation was introduced.
介绍了后向散射回波与信标光到达角起伏的原理性比对实验。
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