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。
2
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。
3
The contrastive experiment of back-scattering echo and beacon angle-of-arrival fluctuation was introduced.