ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

According to the problem of location failure or large deviation probably generated on account of sensor information loss or abnormal fluctuation when the tractor worked in the complicated field environment, a multi-sensor fusion positioning system based on the weighted-confidence was designed, which composed of global position system and dead reckoning system. The corresponding sub-filter and the global filter were constructed based on the federated Kalman filtering. Then the confidence distance and confidence function of every sensor was defined to compute the confidence coefficient of each sub-filter, which was used as adaptive factor after weighted arithmetic. Finally, the adaptive factors were fused optimally in the global filter to get more accurate position estimates. The computer simulation and field test were carried out to validate the effectiveness and reliability of the designed multi-sensor fusion positioning system.