校正

In order to improve performance of uncooled thermal imager, diffractive optical elements are applied in high relative aperture IR lenses.

将衍射光学元件应用于非制冷热像仪的大相对孔径红外镜头与传统设计相比，衍射光学元件的引入，增强了此类镜头的色差校正能力，提高了镜头的成像质量，提高了镜头的透过率，减少了光学零件的数量，减轻了系统重量，为提高非制冷热像仪的性能奠定了坚实基础。

A design example of a lens whose operating wavelength is 0.4～0.9μm,focal length is 400 mm,full field-of-view angle is 6.2°and relative aperture is 1:4 is given on the basis of the theoretical calculation and the optimization of optical design software ZEMAX.

通过理论计算和ZEMAX光学设计软件的优化，给出工作波长范围在0.4～0.9μm、焦距为400mm、视场角为6.2°、相对孔径为1∶4的设计实例。设计结果表明，二级光谱得到了很好的校正，像质优良。

Firstly, the infrared optical system was usually designed to large-sized relative aperture system by reason of the target detected by the system was far, and weak radiant energy. However, the infrared image was suffered from geometric distortions due to wide-angle design of the infrared optical system.

为了获得更多的辐射能量，红外光学系统一般设计为大相对口径系统，这就不可避免的造成光学上像差校正的困难，进而导致红外图像的几何畸变。

With reasonable analysis of optical path, a new type beam expander with wide aperture and bigger field angle and large relative aperture in which the on-axis and off-axis aberration are both perfectly corrected is designed.

通过合理的光路分析，设计出一种轴上和轴外像差都得到很好校正、大口径大相对孔径、视场可增大的、光学性能优于伽里略和开卜勒扩束器的新型扩束器。

The log data of Samandepe gas field in the Amu Darya Right Bank of Turkmenistan are old in logging suites, limited and inconsistent in logging items between early exploratory wells and later development wells. Based on the correlation of different log data, the suitable log data are selected from the available logging suites to build up a mathematical statistical model of artificial fitting acoustic curve. The non-linear correction of neutron and gamma ray data was performed to ensure the relative rationality and uniformity of log interpretation.

针对土库曼斯坦阿姆河右岸萨曼杰佩气田测井资料存在系列老、项目少、早期探井和后期开发井测井项目不统一的现状，通过不同测井资料问的相关分析，合理选用已有测井系列的测井资料，建立人工拟合声波曲线的统计数学模型；通过对中子伽马资料进行非线性校正，保证了测井解释评价资料的相对合理和统一。

The panchromatic image can be atmospherically corrected in a similar way by using the resample aerosol optical depth distribution.

研究中将反演的气溶胶浓度分布重采样到全色波段的分辨率，用MODTRAN对全色波段进行大气校正，也取得了较好效果。

A novel single-stage power factor correction circuit based on flyback converter is presented in this paper,.A single active switch is used to achieve a fast-regulated-output voltage, the reservoir capacitor voltage is clamped and efficiency is high.

本文提出了一种基于反激变换器的新型单相功率因数校正电路，电路只用一个有源开关就可以获得输出电压的快速调节，储能电容电压被箝位、效率高。

With the relationship between time and frequency of chirp signal, residual errors in time domain are mapped into frequency domain and compensated. Short Fourier Transforms are used to gain high efficiency.

利用线性调频信号的时频对应关系，将时域误差转换到频域，基于短时傅里叶变换进行逐块的频域误差校正，得到精确聚焦的图像。

The 3D-curves were shown for different factors,root mean square errors of cross validation,and prediction residual sum of squares.Analysis results ...

实验结果表明：校正模型的预测精度在5 452~12 285 cm-1波段范围内，最佳主因子数为7时，雪青梨总酸的预测精度最好，其预测集的相关系数达到了0.79，预测标准偏差为

By means of a new frequency scaling operation, the range migration is corrected without interpolation, and the residual video phase term is removed at the same time.

应用频率变标技术，给出的算法在消除信号剩余视频相位项的同时进行距离单元徙动校正，避免了插值运算。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。