Method for accurately simulating and generating river network through DEM (Digital Elevation Model) data

The invention discloses a method for accurately simulating and generating a river network through DEM (Digital Elevation Model) data. The method comprises a parallel river correction program and a short and broken river correction program. According to the invention, a better approximately reasonable river network can be simulated. According to the method, the generation condition of the mountain river network can be optimized, and the flat river network can be represented more reasonably; the method mainly solves the problems of generated unreasonable adjacent parallel rivers and rivers in unreasonable confluence directions, generated short and small rivers are eliminated, and rivers without reasonable exits are corrected. 本发明公开了一种通过DEM数据精准模拟生成河网的方法，包括包括修正平行河流程序和修正短、断河流程序。本发明能够模拟出更好的近似合理的河网。该方法既能优化山地河网生成情况，又能较为合理的表示平地河网；主要解决生成的不合理近邻并列河流、不合理汇流方向的河流，消除生成的短小河道，修正没有合理出口的河流。