同时国内外关于饭店员工满意度的研究相对比较匮乏，缺少量化的评价模型。

Meanwhile, we are relatively lack of the researches from home and abroad on employee satisfaction degree and a quantized elevation model of ESD at present.

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深入研究了灰度噪声、量化噪声对目标特征图像的影响及其误差模型，并由此建立了目标特征图像质心坐标提取误差模型。利用仿真试验分析了灰度噪声、量化噪声导致的航天器间相对状态参数测量的误差分布。

Based on the study of the influence of the quantification noise and the gray level noise on target feature image, the error model of the target feature image centroid coordinates is built.

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