天文纬度

Data of latitude observation with the zenith telescope ZTL-180 are recalculated in a homogeneous system for the years 1970-1980. In this Paper the following results are given:(1) Correction of the declination and the proper motion for each pair at 1970.0

对1970—1980年间的纬度观测资料，统一使用IAU1964系统天文常数，按直角坐标法计算全部星对的视赤纬，用统一的公式进行了全部观测结果的归算处理。

The results suggest that the annual ESR quantity has clear latitudedependent variation characteristics and a progressive increase trend from north to south. The annual ESR quantity azonal distribution characteristics appear in mountainous areas owing to the effects of topographical factors such as aspect, slope and terrain intershielding.

结果表明：我国年天文辐射总量有明显的纬向分布特点，随着纬度的降低，年天文辐射总量由北向南增加；由于受坡向、坡度和地形遮蔽因子影响，山区天文辐射表现出非地带性分布特征。

In this paper, the basic mathematical model was derived by means of two methods, the first is the twostar positioning algorithm in celestial navigation theory and the second is based on the gyro dynamics theory. The results from these two methods are identical and therefore are correct. The latitude is equal to the elevation-angle of the polar gyro. The course is the ideal output from the sensor fitted to the outer gimbal. The longitude is a function of the equator gyro's azimuth and elevation angles.

本论文用天文导航中的双星定位法和经典的陀螺力学原理两种方法建立了ESGM的基本数学模型，并且得到一致的结果，说明所建模型是正确的，即载体的纬度等于极轴陀螺主轴相对水平面的高度角，载体的航向等于极轴陀螺外环轴上角度传感器的理想输出，载体的经度是赤道陀螺的方位角和高度角的函数。

These images were placed in celestial latitude and longitude coordinate systems that allowed the positions of the stars to be mapped in the sky and formed the backdrop for predictions of the location of the planets and other heavenly bodies throughout the year.

这些图像被放置在天文经度和纬度坐标上允许明星的被映射在天空中并形成了全年的对行星和其他天体的位置预测系统的背景。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。