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：2008
卷号：XXXVII Part B5
页码：829-834
出版社：Copernicus Publications
摘要：GNSS-Aided Inertial Navigation for Direct Georeferencing of aerial imagery and other sensors such as LIDAR is a well accepted technology that has been in use since the mid 1990's. Position accuracies of 10 cm RMS horizontal and 15 cm RMS vertical are routinely achieved using post-processed kinematic ambiguity resolution (KAR) differential GNSS processing along with specific operational restrictions that are necessary due to the nature of the airborne environment. These include: flying turns of less than 20 deg bank angle, flying less than 30 km from a reference GNSS receiver in order to correctly fix integer ambiguities, and keeping the maximum baseline separation to less than 75 km once the ambiguities are fixed. Each of these restrictions significantly reduces the efficiency of airborne mapping, and hence increases the overall cost. In order to overcome these limitations, Applanix has developed a new patent pending post-processed GNSS-Aided INS software called POSPac Mobile Mapping Suite (formerly POSPac Air 5.0). This software incorporates two new technologies, Applanix IN-Fusion TM and Applanix SmartBase TM , that together provide the ability to fly turns with greater than 20 deg bank angle, and fly at distances up to 70 km from the nearest GNSS reference station, without sacrificing accuracy or reliability. This paper provides details on the new Applanix IN-Fusion technology and Applanix SmartBase module implemented in POSPac MMS. It will then present results from a series of studies into the performance of POSPac MMS using various reference station networks from around the world. Finally it will present performance and cost saving results when flying bank angles at greater than 20 degs from a series of actual survey flights
关键词：Aerial Survey; GNSS/INS Integration; IMU; Direct Georeferencing; Photogrammetry
