文章基本信息

标题：Development of a low–cost sensor system for use on gyrocopters
本地全文：下载
作者：Alvand Miraliakbari ; Michael Hahn ; Johannes Engels 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2010
卷号：XXXVIII - Part 1
出版社：Copernicus Publications
摘要：Direct georeferencing of airborne imaging sensors with high precision GNSS and inertial technology is an established practice used in numerous aerial survey mapping projects nowadays. Those integrated systems of high quality aerial cameras and orientation sensors have their price which finds its expression in the high price level of aerial survey mapping projects. The development of an alternative for aerial survey mapping is the challenge of this research. It aims at the development of a low-cost sensor system for capturing aerial colour and ther mal images of high photogrammetric quality by using a gyrocopter. Fusion of both images produces pan-sharpened thermal images which are easier to interpret visually. In this paper we describe the experimental setup of our low-cost system and present first results of gyrocopter image flights using a SLR colour camera and a thermal infrared camera. For controlling the blocks of aerial images as well as for navigational support of the gyrocopter pilot, a GPS aided MEMS-based IMU is used. Orthophotos are generated and orthophoto mosaicking is carried out, both with RGB and thermal infrared images. Horizontal deviations in the order of 5 to 10 m from the planned flight track have been observed in our first four test flights. The recorded GPS/IMU sensor data are analyzed to investigate vibrations of the gyrocopter platform. Most prominent are vibration frequencies of about 13Hz which stem from the rotor. Shock mounts will be used in our future development to absorb the influence of the vibrations onto our sensor platform
关键词：Aerial; Infrared; IMU; GPS; Mosaic; Orthoimage; Thermal; Triangulation