The paper introduces the optimal design of the second grade level net in fuoshan , expounds the evaluating method on accuracy for different net pattern based on the principle of indirect balancing and the computing function of the excel matrix , and selects a pattern which meets the needs of national norm for net form , the density of point , accuracy and reliability 摘要本文介绍了佛山市二等水准网项目的优化设计,重点阐述了根据间接平差原理对不同的布网方案,利用excel的矩阵计算功能实现精度评估的方法,评选出一套从网形、点位密度、精度、可靠性等方面都符合国家规范和佛山特点的方案,以供参考。
Wavelet transform has been widely used in image process and pattern recognition because its " micro - scope " feature and similar - human vision feature . neural net pattern recognition is an important research direction in pattern recognition field because of the strong self - learning , application feature 小波变换具有“显微镜”特性和类人视觉特点,在图像处理及模式识别中有着越来越广泛的应用;神经网络模式识别表现出来较强的自学习、自适应能力以及容错性、鲁棒性等使得它成为模式识别领域一个重要的研究方向。