The precision of the numerical results at a small attack angle is better than that at a big attack angle . it may owe to the approximate kutta condition adopted here 训一究工作，所得到的结果在小角度斜航时精度要好于作大角度斜航时的精度，这可能因为所采纳的kutta条件所导致的。
Basing on carefulness analysis of error source , a new measuring system for small angle is designed in this paper . with super measuring precision it can be used to replace old measuring instrument 为减小测量误差,在对误差源进行仔细分析的基础上,本文研制了一种新型的高精度小角度测量仪器,以尝试代替旧有的测量装置。
When the magnetic ( electronic ) field approaches to the threshold and saturation field , the angle is very small , we can linearize and simplify the calculation because the angle is very small 因此计算液晶盒阈值和饱和场强是很重要的问题。对于接近阈值和饱和的情况，可以用小角度近似，把问题线性化，使计算大大简化。
The beam steering angle is always small , about 2 ~ 3 , and high resolution and orientation precision are required , so a high - precision optical small - angle measurement technique and system is imminently required to develop 由于该光束偏转角一般比较小,大概在2 ~ 3 ,要求实现高的分辨力和定位精度,因此迫切需要研究一套高精度的光学小角度测量技术与系统。
Servo system adopts linear and non - linear system . namely servo system is non - linear system under the condition of large - angle maladjustment , and linear system under the condition of small - angle maladjustment , thereby guaranteeing the system ' s stability 即在大角度失调的情况下，伺服系统是一个非线性系统；而在小角度情况下为一个线性系统，保证伺服系统的稳定性。
Tem analysis indicated that the reactive plasma sprayed tin was composed of nano - scaled crystal grains ranging from 50 ~ 70nm ; and the high resolution tem study illustrates the existence of the amorphous matter , and that the nano - scaled crystal grains are enclosed by the amorphous matter Tem分析表明，涂层由直径50 70nm之间的纳米晶构成；高分辨观察说明， tin涂层中的纳米微晶是被非晶包围着的，纳米晶之间为小角度晶界。
One is initial parameter estimation , another is small rotation around the center of images . for the former problem , we use resampled small images to compute cross correlation . and we use a 3 - parameter model including small rotation to solve the latter problem 主要解决了初始参数的估计问题和绕图象中心的小角度的旋转问题，前者采用重采样的小图象进行相关匹配，在解决后一个问题时，采用了包含小角度徒转的三参数模型。
Because it is hard to mesh for small angularity in the body , especially spline , so we have to simplify these parts . we adapt two methods to simplify them , and choice the better one to calculate the strength of the shafts . above all , we also optimize the shafts structure 针对实体结构存在小角度问题给网格划分带来的困难，本文对结构进行了必要的简化，并通过两种简化方式的计算对比，从中选择了较为合理的一种，使计算结果更为准确。
Continuous angle scanning can be got by using regular optical phased array , but the scanning angle is very small , because there will generate ajoint beams when the scanning angle is very large , which can affect the quality of scanning , in this paper the reason is discussed in detail 规则光学相控阵可以实现连续扫描，但是只适用于小角度的扫描，因为当扫描角度太大时要产生伴随光束，平重影响扫描的质量，本文对其产生的原因进行了详细的说明。
Also , much related research requires the narrowband assumption , which is not always realistic in practical applications . it is necessary to analyze the effects of finite bandwidth to bearing estimation of spatially distributed source . additionally , more complex noise models should be dealt with in practical situations as well as that of white gaussian noise 不过，其中多数方法仅适用于小角度扩展情况，当角度扩展比较大时，需要在估计的稳健性和运算量之间进行折中；而且，许多方法要求信号传播满足窄带假设，这在实际的应用场合中可能很难得到满足，有必要分析信号带宽对分布源波达方向估计的影响；另外，也有必要考虑空间色噪声环境中的分布源波达方向估计问题。
