障碍物

The effect of obstacle with special size on audibility factor of DW-ILS is analyzed,and the numerical results are obtained.

采用电磁感应定理计算出了特定尺寸障碍物对分米波仪表着陆系统航向天线辐射场的散射，得到了该障碍物对跑道中心线上可听度系数影响的数值结果，并对此做出了分析。

Back a car radar uses principle of ultrasonic range finding commonly, below the control of controller, transmit ultrasonic signal by sensor, when encountering fraise, generate echo signal, controller of the classics after sensor receives echo signal undertakes data processing, judgement gives the seat of fraise, by show

倒车雷达一般采用超声波测距原理，在控制器的控制下，由传感器发射超声波信号，当碰到障碍物时，产生回波信号，传感器接收到回波信号后经控制器进行数据处理、判定出障碍物的位置，由显

Secondly, we deal with the ripple of start and end points to represent the flow effect of waterfall. Finally we add the spattering model in the system to simulate the ordinary cartoon spattering scene of obstacle and the obstacle with big frontispiece.

对瀑布起点和终点的波特别处理，表现出水的流动效果，同时增加了溅射模型，使系统能够更好地模拟出一般障碍物，以及正面大的障碍物溅水等常见的动画场景。

Considering the shape of well trajectory in space and the change of anti-collision distance from adjacent wells along well bore, the obstacle of drilled well was assumed as the frustum of a curved-axis cone, and a model for describing the obstacle contour was provided.

考虑井眼轨迹的空间形态和安全绕障距离沿井深变化等因素，将作为障碍物的已钻井抽象为空间曲圆台，给出了障碍物的描述模型。

This method can both find near obstacles and reduce error for far obstacles in gird map.

该方法既可以尽早发现近距离的障碍物，又可以减少对远距离障碍物的测量误差。

And this optimization scheme is applicable for not only the reconstruction of the impenetrable obstacle but also that of the penetrable obstacle.

这个模型不仅对不可穿透障碍物的重构，而且对可穿透障碍物的重构都是适用的。

This means that a person holding the torch can point it ahead of him and 'scan 'the area for obstacles over a range of about 25 ft, If there are no return echoes coming through the headphones, then there is nothing in the way.

这就意味着持有超声电筒的人可把它指向他的前面，搜索范围超过25英尺的区域里的障碍物。如果没有从障碍物反射回来的回波，即表示路上没有东西。

The simulation experiment shows that robot can adaptively avoid collision with a single moving obstacle in any speed and any direction.

因为在真实世界中，环境通常是不确定的，例如存在未知的障碍物、无法预测障碍物的未来行为和静

Enables it when the automobile slow back-draft travel, distinguishes the automobile rear part the obstacle, and can survey between the obstacle and the chassis is away from, has in front of the collision accident in the automobile, sends out the voice prompt and the digital tube demonstration numeral prompt to the pilot.

使它能在汽车缓慢倒车行驶时，识别出汽车尾部的障碍物，并能够测量障碍物与车体之间距离，在汽车发生碰撞事故前，对驾驶员发出语音提示和数码管显示数字提示。

Tow coordinate systems are confirmed on the movement plane of mobile robot. The dynamic equations that relative position changes between robot and bar are established in one of the tow coordinate systems. Movement track of bar are forecasted by theory. Simulation experiments show the method is effective.

确定了移动机器人在移动平面上的2个坐标系，并在其中一个坐标系中建立了机器人与障碍物相对位置变化的动态方程，运用Kalman理论障碍物动态轨迹进行预测，仿真实验表明该方法可对障碍物位置变化进行有效的预测。

I use an example quoted by Hu Jiaqi:"It is reported that America separates the DNA of a kind of virus by making use of genetic technology and combines it with another kind of DNA. Finally, they get a kind of virulent biological agent called a "pyrotoxin". Someone discloses in private that 20 grams of such a kind of biological agent could result in the global death of 6 billion people due to infection."

我在这里例举胡家奇所引用过的例子："据报道，美国利用转基因技术，将一种病毒的DNA分离出来，与另外一种DNA进行结合，拼结成一种剧毒的"热毒素"生物战剂，且私下有人透露，这种生物战剂只需20克，就可以导致全球60亿人全部感染死亡。"

Waiting, for the queers and the coons and the Reds and the Jews.

等待着疯子和黑人还有红色共产主义者还有犹太人