Linear photovoltaic array arrangement method based on DEM

The invention discloses a linear photovoltaic array arrangement method based on a DEM, and relates to the technical field of solar panel arrangement, in particular to a calculation method for optimizing solar panel array arrangement. The method comprises the steps of performing three-dimensional terrain layout central axis section extraction and curvilinear function fitting calculation, single photovoltaic panel east-west layout angle calculation, layout calculation of a front panel on a layout central axis, layout calculation of a rear panel on the layout central axis, pillar height comprehensive adjustment calculation, and single photovoltaic panel south-north layout angle and interval calculation. According to a high-precision actual digital elevation model (DEM) of a local photovoltaic site, shadow shielding, caused by sunlight changes in the north-south direction and the east-west direction, between the terrain and the photovoltaic panels and between the photovoltaic panels is fully considered, so that a