【摘要】 结合桥梁GPS B级控制网实例,选择具有代表性的跨江基线为研究对象,对连续24h的观测数据进行整体和分段基线解算与分析,进而选择较好的观测时段进行二维平差计算和比较。研究表明,选择较好的观测时段和较短的观测时间,同样可以达到较高的基线精度和平面精度,对合理安排GPS网复测和提高工作效率有一定的参考价值。更多还原

【Abstract】 Based on the GPS B level control network of a bridge,some representative crossing-river baselines are chosen for studying,24 hours GPS observation data are processed as a whole and as different segments respectively,so as to select better observation time period for taking plane adjustment.The results show that selection of better and shorter observation time period can achieve similar results as the whole observation.This conclusion has a certain reference value for appropriate arrangement of repetition observation of GPS network and can improve work efficiency.更多还原