arcsec

Monte Carlo experiment demonstrates that , while the magnitude uncertainty is 0 5 ( 3 σ) and the position uncertainty is 10 arcsec ( 1 σ), the success rate very close to 100 % .

MonteCarlo实验表明，在星等误差0.5星等（3σ），位置误差10角秒（1σ）时，该算法的识别成功率接近100%。

A conclusion is conducted from the final experiments that the errors of spindle deviation within 0 5 arcsec could be maintained using this technique .

应用该技术可将主轴偏角误差控制在0.5角秒内。

However , the diffracted angle and its variation due to SAW gyroscopic effect is very tiny ( arcmin and arcsec level ), so the key to the plan is whether such a tiny Bragg diffractive angle can be measured with success .

理论计算表明布拉格衍射角及其变化十分微小（弧分、秒数量级），所以能否在实践中成功地检测受Ω调制的布拉格衍射角，关系到SAW陀螺效应声光探测和检测方案的成败。

The control system controls the table to rotate at a constant speed . Optical zero pointing sensor converts the reflecting light into electrical impulse to control the counter . Through many times of measurement and data processing in the computer , the repeated measurement accuracy reaches ± 0.2 arcsec .

RLS输出信号作速度反馈，控制系统控制转台恒速转动，光学指零传感器将反射光束转换成电脉冲，控制计数器工作，通过多次重复测量和计算机数据处理，使重复测量精度达到±0.2arcsec。