Truck GPS trajectory data compression method

The invention relates to a truck GPS trajectory data compression method, which comprises the following steps: based on truck GPS trajectory data, cleaning the data, i.e., screening the data, so as toremove repeated and invalid data; based on the cleaned truck GPS data, judging a stay point in the truck GPS track data through a predefined speed threshold value and a predefined time threshold value; and compressing the cleaned GPS trajectory data by using a trajectory compression method based on the judged parking point data, truck GPS trajectory data and road network data, and finally storingthe compressed GPS trajectory data as a local Excel file. Through the technical scheme of the invention, the compression rate of the GPS track data of the truck is greatly improved, the processing track is simpler and more complete, the waste of redundant information on storage resources is greatly reduced, and the uploading is quicker. 本发明涉及一种货车GPS轨迹数据压缩方法，包括以下步骤：基于货车的GPS轨迹数据，对数据进行清洗，即数据筛选，以剔除重复、无效的数据；基于清洗后的货车GPS数据，通过预先定义