Development of GPS Guided Auto Aerial Infrared Photography System for Harvest and Soil Improvement

研制了一架翼展3.6米、重量约8公斤、拉力约3马力酒精发动机的飞机，并搭载了GPS、超轻型计算机和无线调制解调器。为了实时确定飞机的位置，通过无线调制解调器发送GPS数据，在地面计算机的数字地图上指示飞机的当前位置。飞机上搭载了商业底座数码相机，它被改装成近红外相机，从农场上空约250米处航拍了一个甜菜农场的近红外照片。根据红外图像的阴影，确定了生长劣势的位置，并对生长劣势和正常部分进行了土壤化学分析。结果表明，酸性土壤是生长不良的主要原因。

An air plane of 3.6m wing span, about 8Kg weight and pull by about 3 horsepower alcohol engine was developed, and GPS, ultra light computer and wireless modem are on boarded. In order to confirm real time position of the air plane, current position of the air plane was indicated on digital map of a ground computer by sending GPS data via wireless modem. Commercially soled digital camera which was modified to functioning as a near-infrared camera was boarded on the airplane, and aerial near-infrared photography of a beet farm was taken from approximately 250m above the farm. From the shade of the infrared image, locations of growth inferiority are determined and chemical analyses of soil were made both for growth inferiority and nomality portions. As a result, acidic soil was found to be the cause of the growth inferiority.