基于模糊逻辑的天文定位中选星方式的建模与分析

基于模糊逻辑的方法，以天体的星等、高度和方位为主要依据，给出选星的模型；进而利用最小二乘法原理对多天体定位的误差进行处理。实验数据验证了该方法是合理有效的。     

Real-Time Fuzzy Obstacle Avoidance Using Directional Visual Perception

This paper presents a novel vision-based obstacle avoidance approach for the Autonomous Mobile Robot (AMR) with a PanTilt-Zoom (PTZ) camera as its only sensing modality. The approach combines the morphological closing operation based on Sobel Edge Detection Operation and the (μ-kσ) thresholding technique to detect obstacles to soften the various lighting and ground floor effects. Both the morphology method and thresholding technique are computationaUy simple. The processing speed of the algorithm is fast enough to avoid some active obstacles. In addition, this approach takes into account the history obstacle effects on the current state. Fuzzy logic is used to control the behaviors of AMR as it navigates in the environment. All behaviors run concurrendy and generate motor response solely based on vision perception. A priority based on subsumption coordinator selects the most appropriate response to direct the AMR away from obstacles. Validation of the proposed approach is done on a Pioneer 1 mobile robot.     

基于模糊度取整成功概率的周跳探测方法

GPS现代化的一个重要内容是增加一个新的频率,基于这个新的频率提出了一种有效的周跳探测方法。介绍了模糊度成功率的公式,成功率越高,模糊度取整的正确性越高。通过计算,长宽巷的模糊度成功率非常高,将其模糊度固定,就可以比较准确地计算测站到卫星间的距离项,进而很容易地探测出周跳。即使没有实测数据,应用成功率的概念也揭示了本方法的有效性。     

基于聚类分析的港口类型化研究

根据各港口集装箱运量增长的特点,通过软件SPSS,应用基于聚类分析的类型化方法将我国沿海主要集装箱港口分成三大类型,即普通增长型、加速增长型和波动增长型,并对各类型港口增长特点进行了分析.     

公路项目投资决策的综合评判

对于公路项目的投资决策，需要综合考虑公路项目经济效益指标和社会效益指标．其中社会效益指标．可以采用专家模糊评分的方法进行处理，使定性指标定量化。对于经济效益指标虽然有着定量的数值，但各指标间的量纲不同，用一般的评价方法难以判别各公路项目综合效益的好坏。