Using double layer container transport is an effective approach to reduce intense transport capacity of main railway line in China and decrease container transport cost.
采用双层集装箱运输是缓解目前我国铁路主要干线运输能力紧张状况、降低集装箱运输成本的有效途径。
It is also pointed out in the thesis that when trains are running in railway line, using double receivers, fusing GPS single point position units with other locating sensors is of great value.
对大型车站、道口、大型个体工程等处则建立连续运营GPS差分基准站，采用动态差分GPS数据与其它传感器数据组合定位的方案，以提高列车定位的精度。
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