1) low Doppler velocity
低径向速度
1.
This paper introduces a method for the artillery location radar to detect the low Doppler velocity target by using a special filter and CFAR process to obtain a detecting threshold, which can improve the detecting capability of the radar.
为了解决炮位侦校雷达对低径向速度目标的检测问题 ,首先引入一个专门的滤波器对接收的回波信号进行滤波 ,然后采用数字杂波图对信号进行恒虚警处理 ,获取一个自适应于地杂波变化的检测门限用于低径向速度目标的检测。
3) radial velocity
径向速度
1.
The use of the radial velocity to improve the performance of target tracking;
利用径向速度观测值提高目标跟踪性能
2.
The radial velocity of flow field in hydrocyclones has great influence on the particle radial movement, which decides the degree of resisting particle radial movement and the diameter of the minimum particles the hydrcyclone can separates.
水力旋流器内部流体径向速度对其内部颗粒的径向运移有着重要的影响,它是固体颗粒径向运移受到阻力的重要原因,直接影响水力旋流器的最小分离粒度。
3.
Results show that the distribution of radial velocity of wide spaced two jet and four jet impinging streams has relation to d/L , the maximum radial velocity has relation to u 0 d/L , and the radial distance of the position of the maximum radial velocity is directly proportional to L .
采用 DANTEC公司的三维激光动态粒子分析仪 ( Dual PDA)测定了大喷嘴间距同轴对置两流股及四流股撞击后的径向速度分布。
4) radial speed
径向速度
1.
Through measuring radial speed,testing whether it is reasonable,then computing and unlinearity-correcting,we get the speed of target.
利用固定多普勒频率的周期进行测速是测速的方法之一 ,此法应用到雷达测速中 ,通过测出径向速度 ,检验数据的合理性 ,再利用合理的数据进行径向速度外推和非线性修正 ,求得目标的速度。
2.
The stage numbers of the separator of PBR was optimized by analyzing its effects on radial speed(U),average turbulence kinetic energy(ADT),cycle time of PBR(tc)and the ratio of cycle time of the downer channel to cycle time of PBR(ε).
采用CFD(Computational Fluid Dynamics)模型对一种新型多节隔板-平板式光生物反应器在不同通气量下的流场分布进行了模拟并与PIV(Particle Image Velocimetry)测量结果进行比较,结果表明CFD模型可用于光生物反应器流场的模拟;利用CFD模型对不同隔板节数的平板式光生物反应器的内部流场进行了模拟,对光照方向混合进行定量研究,并通过分析光照方向径向速度U、下降通道体积平均湍动能ADT、流体(藻液)绕隔板循环一周所用时间tc、下降通道(光区)停留时间占藻液绕隔板循环一周所用时间的比例ε四个参数来优化光生物反应器的隔板节数。
5) Radial speed and acceleration
径向速度、加速度
6) Radial acceleration
径向加速度
1.
In this paper, the problem of radial acceleration estimation in one pulse was dealt with based on Hough-Ambiguity transformation, and then acceleration was estimated.
根据雷达发射恒定载频信号时匀加速目标的回波为线性调频(LFM)信号的特点,研究了在单脉冲内基于Hough-Ambiguity变换(HAT)估计目标径向加速度的问题。
2.
Radial acceleration of radar and target is a important character of the relative movement of them and can enhances maneuvering target tracking and target identification,so study on radial acceleration estimation directly from radar echo is needed.
雷达-目标径向加速度是表征雷达和目标相对运动关系重要特征,可用于机动目标跟踪、目标识别等,因此研究直接从雷达回波估计径向加速度很有必要。
3.
In the post signal processing of CW radars,when the radial acceleration of the target is big and the SNR is low,most methods to estimate it are incompetent for getting the precise result.
而目标的径向加速度是一个非常关键的参数。
补充资料：低都儿低
1.低而又低，很低。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条