Research On Path Planning For Farmland Leveling Operations Based On GNS

Due to the continuous application of GNSS technology in agriculture,farmland land leveling can save water resources and improve land utilization.High quality land leveling can not only effectively improve the surface of farmland,but also evenly distribute farmland for irrigation,so as to improve the yield and economic benefits of agricultural products.Choosing the optimal operation route planning method is the key technology to improve the efficiency of land leveling.Based on the existing GNSS leveling system and related research results,this study processes and analyzes the three-dimensional data information of farmland terrain,calculates the benchmark elevation and earthwork of farmland,and transports soil from high-lying places to low-lying places according to the principle of equal filling and excavation.Through the terrain analysis of farmland,this paper studies the farmland leveling operation path planning based on GNSS.The main research contents of this paper mainly include the following aspects:(1)The working principle and characteristics of GNSS leveling system are studied.On this basis,the farmland terrain GNSS measurement software is designed.In order to simplify the cumbersome program,the functional modules of farmland terrain GNSS measurement software are divided.(2)By measuring the terrain of farmland and denoising the measured data,the terrain information of farmland is obtained.The datum elevation of farmland is calculated by plane fitting method and the earthwork of farmland is calculated by square grid method,so as to effectively reduce the impact of data error on path planning.(3)The automatic path planning method and S-type path planning method are simulated by MATLAB software,and the operation path length of the two methods is compared.The test results show that the automatic path planning method can meet the operation requirements.