查询词典 spherical angle

This Digital Compass not only provides the course angle but also affords the carrier s pitch angle and roll angle .The two data of attitude are both exported digitally.

本次设计的这种数字航向仪除了提供载体的航向角，还提供了载体俯仰角和翻滚角两个姿态量，并以数字形式输出。

During the lateral parabolic profile was computed,numerical methods of calculating angle of inclination on initial point of the lateral paracurve and calculating angle of inclination based on interval length were analyzed.It is pointed out that the key of the lateral parabolic profile design is a circular function equation which can be applied to solving the angle of inclination on initial point of the lateral paracurve.

对侧位抛物线剖面设计求解过程中的求侧位抛物线初始点井斜角的数值方法和从段长求井斜角的数值方法进行了分析，指出其关键是求解侧位抛物线初始点井斜角所满足的一个三角函数方程。

Based on the definition of benchmark angle and compensation angle,the algorithm of roll angle of projectile in fire plane is brought out and the calculating error is analyzed.The simulation is carried out for the swing of projectile and the measurement of geomagnetic signal error.

将弹丸的滚转角分解为基准角和补偿角，给出了处于射击平面内的弹丸滚转角解算方法并进行了误差分析，针对弹丸的摆动及地磁信号测量误差进行了仿真。

Then, aerodynamic parameters in different flight conditions are used to imitate the uncertainty of the system, and the digital simulation of closed-loop system designed is performed. The results show that the system can accomplish asymptotic decoupling of roll angle, sideslip angle and head-on angle for aircraft, and the system is provided with the function for restraining uncertainty in the system. This illustrates that the flight control system designed has not only good decoupling characteristic, but also better robustness.

然后用不同飞行条件下的空气动力参数变化来模拟系统的不确定性，并进行闭环系统数字仿真，结果表明，所设计的控制律不仅可实现对飞机滚转角、侧滑角、迎角等的渐近解耦控制，而且对系统不确定性具有较强的抑制作用，说明系统具有较好的解耦性和较强的鲁棒性。

The system can automatically seek north when the vehicle is immobile. And the time consumption is no more than 5.5 min. Besides, the system can keep azimuth angle and provide tilt angle and pitch angle of the vehicle.

本系统可以在车载条件下，停车完成自动寻北，寻北时间小于 5.5min；本系统还具有在机动时进行方位保持、实时提供载体倾斜角和俯仰角等功能。

Firstly, the control of reentry phase and the model of RCS jets are presented. Then the flight control system is divided into two subsystems based on the time-scale separation principle. The fast states subsystem corresponds to the three body-axis angular rates, the slow states subsystem controls the angle-of-attack, sideslip angle and the rate of the bank angle about the velocity vector. Lastly, the proportional-plus-integral feedback is designed to increase the system robustness.

首先，分析了SRLV再入段的数学模型，并给出了反作用推力控制系统的控制模型；其次，将非线性动态逆方法与时标分离原则相结合，考虑飞行器姿态控制系统的外环角回路的慢变特性和内环角速度回路的快变特性，独立设计了两个回路的控制律；最后，为了增强系统的鲁棒性，分别在两个回路中引入了比例－积分反馈，有效地抑制了干扰力、力矩和非线性对消带来的逆误差。

Based on the spherical and plane triangular relationships of the spacecraft, the center of the earth, the projected-cloud and the true-cloud, several error analyses were done for the computing of parallax with different intersection angle of crafts, and incorrect images match.

利用卫星、真云、投影云和球心的平面球面几何关系，在几何反演方法的基础上，对卫星间隔和图像错误匹配带来的反演误差进行了分析。

Based on the spherical and plane triangular relationships of the spacecraft, the center of the earth, the projected-cloud and the true-cloud, several error analyses were done when one pixel was incorrectly matched with different intersection angle of crafts and the same cloud height.

利用卫星、真云、投影云和球心的平面球面几何关系，在几何反演方法的基础上，分析了在固定云高、不同卫星间隔和固定卫星间隔、不同云高这两种情况下，错误对比1个像素导致的可能的反演误差。

The said Martinez stretcher comprises concave spherical reflecting lens, plane reflecting lens and grating. The said compressor comprises plane reflecting lens, inner right angle reflecting lens and grating, which is characterized by the following: the grating fringe density of the stretcher is larger than that of the compressor.

所述的马丁内兹展宽器由凹球面反射镜、平面反射镜和光栅组成；所述的压缩器由平面反射镜、内直角形反射镜和光栅组成，其特征在于，展宽器的光栅条纹密度大于压缩器的光栅条纹密度；展宽器中的凹球面反射镜曲率半径位0.9～1.2米，光栅距凹球面反射镜的位置为凹球面反射镜曲率半径的1/3～1/2。

Then,the cosine value of central angle between the spacecraft and the descending node is solved by using cosine theorem of spherical geometry to avoid the cumbersome solving process by judging the flight direction of a satellite and the latitude of sub-satellite point in an original calculation model of image motion speeds.

通过球面几何的余弦定理直接求解航天器与降交点相对地心夹角的余弦值，避开了原像移速度计算模型中通过判断卫星飞行方向和星下点纬度来求解航天器与降交点相对地心夹角余弦值这一过程。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切