varying acceleration

Considering that it is more meaningful to know the acceleration components relative to a moving trace instead of those along longitudinal, lateral and normal axes of targets, a time-varying nonlinear state model describing tangential and normal acceleration maneuvers of targets in three-dimensional space is established.

建立了描述目标在三维空间中进行切向与法向机动的非线性状态模型。

some basic concepts on dynamics of varying acceleration motion

关于变加速动力学运动的一些基本概念

The unknown target acceleration is regarded as additive process noise, and the time-varying variance of the overall process noise is computed with a fuzzy system, and GA is used to optimize it.

它将未知的机动加速度看作附加过程噪声，全部过程噪声的时变方差用模糊系统来估计，并用遗传算法对模糊系统进行优化。

The results show that according to the curve of time varying interface acceleration, the process of DME bubble gorwth can be divided into three domains: surface tension controlled growth, transition domain and heat transfer controlled growth.

研究结果表明，根据气泡生长的加速度曲线，二甲醚气泡的生长过程可划分为表面张力控制阶段、过渡阶段和传热控制阶段。