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An Analytic Method for Doppler Changing Rate Based on Frequency Measurement - A Formula of Doppler Direct Ranging

机译:基于频率测量的多普勒改变率的分析方法 - 一种多普勒直接测距的公式

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An analytic method solving Doppler changing rate is presented only by measuring Doppler shift or measured value of frequency. On condition that aerial vehicle is uniform motion, a Doppler direct ranging formula can be firstly derived by making use of the velocity vector identity, the relation between Doppler changing rate and tangential velocity as well as the specific value of Doppler changing rate at neighbor node. As soon as this ranging formula is substituted into the expression of Doppler changing rate, the analytic formula solving Doppler changing rate can be obtained. The analog calculation shows that the relative error derived formula is less than 0.01%.
机译:求解多普勒改变率的分析方法仅通过测量多普勒频移或测量的频率值来呈现。在空中车辆运动均匀的条件下,可以通过利用速度矢量标识,多普勒改变率和切向速度之间的关系以及相邻节点的多普勒改变率的比值来首先推导多普勒直接测距公式。一旦该测距配方被取代为多普勒改变率的表达,就可以获得分析配方求解多普勒改变率。模拟计算表明相对误差导出的公式小于0.01%。

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