under way

Underway Conductivity-Temperature-Depth instrument("UCTD" for short)is a high-tech underway profiling equipment to measure temperature and salinity developed recently from abroad.

海洋动力参量拖曳式剖面测量系统(Underway Conductivity-Temperature-Depth instrument,简称UCTD)是国外最新发展起来的一种高技术在航温盐剖面测量装置,其优势在于以较低的成本,给出高密度的海水温度、电导率剖面数据。

This paper supposes the goal s velocityis invariable in a line,using observational trajectory method to obtain the shooting elements.

文章假设目标作匀速直线运动,采用视在航路法求其射击诸元,提出了一种利最小二乘的方法对跟踪误差进行滤波,提高了对目标运动参数的估计精度。