velocity information

This paper presents a method extracting target acceleration by using discrete Wigner-Ville distribution under low pulse repetition frequency ( PRF) and a finite number of samples, velocity information ( Doppler frequency) of target can be obtained simultaneously by using the time-frequency analysis method.

提出了一种在低脉冲重复频率（PRF）和对目标采样数有限情况下提取加速度信息的方法。用这种离散时频分析方法同时也能获得目标的速度信息（多普勒频率）。

The mathematic model of vector gravimetry is deduced from the second motion law of Newton within inertial frame, according to which a basic principle of computing vector gravity using position and velocity information deduced from strap-down INS and GPS is described.

根据牛顿第二运动定律，详细导出了矢量重力测量的数学模型，介绍了用捷联惯导系统和卫星定位系统测量重力矢量的基本方法。

Next, it is discussed how to obtain the range and velocity information of targets from the modulated frequency stepped radar signal through sliding time window method and two-dimension FFT algorithm.

分析了利用滑动时间窗方法和二次FFT算法提取目标信息的原理，给出了获得目标的距离谱和速度多普勒谱的方法。

This model including velocity information, lanes and keep information from the information collection, traffic condition, the level of state information, and finally the effective control level alarm.

此模型包括速度信息，车道保持信息以及距离信息的采集，行车状态的级别运算，状态信息的有效显示，以及最终的报警等级控制。

The property can offer position, velocity, and accurate time navigation information for the spacecrafts in near-earth orbit, geostationary orbit, elliptic orbit or interplanetary orbit.

这一特性使其能够为近地轨道、地球同步轨道、大椭圆地球轨道、地月轨道及星际空间飞行的航天器提供位置、速度和时间等丰富的导航信息。

When it is applied to receive and demodulate the information of track detection and velocity transferred through audio track circuit, simulative experiment over computer shows that it satisfies Error Safety principle.

利用该方法解调音频轨道电路中所传输的列车检测信息和速度信息，计算机模拟实验证明满足接收的技术指标。

The article tells the video velocity measurement system based on DSP, with which people calculates the ball's velocity by way of getting the ball's image information during the course of movement.

本文所论述的基于DSP的视频测速系统，是通过对球体运动过程中的图像信息的获取来计算球体运动的速率。

While Doppler Active Radar Seeker ( ARS) could be aided SINS by beam velocity all the times and remedy the BDS's default of lacking velocity information and continual working ability.

多普勒主动雷达导引头（ARS）可利用波束速度连续辅助惯导，弥补“北斗”系统无速度信息、不能全程使用的缺点。

Algorithm of Reference Velocity Calculation for Braked Vehicle Based on Wheel Speed Information

基于车轮信息的制动车辆参考车速算法研究