Abstract
Abstract. To facilitate applications such as environment detection or disaster monitoring, the development of rapid low cost systems for collecting near real-time spatial information is very critical. Rapid spatial information collection has become an emerging trend for remote sensing and mapping applications. This study develops a Direct Georeferencing (DG) based fixed-wing Unmanned Aerial Vehicle (UAV) photogrammetric platform where an Inertial Navigation System (INS)/Global Positioning System (GPS) integrated Positioning and Orientation System (POS) system is implemented to provide the DG capability of the platform. The performance verification indicates that the proposed platform can capture aerial images successfully. A flight test is performed to verify the positioning accuracy in DG mode without using Ground Control Points (GCP). The preliminary results illustrate that horizontal DG positioning accuracies in the x and y axes are around 5 m with 300 m flight height. The positioning accuracy in the z axis is less than 10 m. Such accuracy is good for near real-time disaster relief. The DG ready function of proposed platform guarantees mapping and positioning capability even in GCP free environments, which is very important for rapid urgent response for disaster relief. Generally speaking, the data processing time for the DG module, including POS solution generalization, interpolation, Exterior Orientation Parameters (EOP) generation, and feature point measurements, is less than one hour.
Highlights
With the number of natural disasters increasing due to climate change, the development of a rapidly deployable and low cost system for collecting near real-time spatial information has become very critical
Direct Georeferencing (DG) technology has become possible by integrating Global Positioning System (GPS) and Inertial Navigation System (INS), making Exterior Orientation Parameters (EOP) available with sufficient accuracy at any instant of time (Gibson et al, 1992)
Most schemes apply low cost INS/GPS integrated systems for flight control, a DG based Unmanned Aerial Vehicle (UAV) photogrammetric platform equipped with an INS/GPS integrated Positioning and Orientation System (POS) that can provide EOP of the camera in a Ground Control Points (GCP) free environment has not been proposed until recently
Summary
With the number of natural disasters increasing due to climate change, the development of a rapidly deployable and low cost system for collecting near real-time spatial information has become very critical. Most schemes apply low cost INS/GPS integrated systems for flight control, a DG based UAV photogrammetric platform equipped with an INS/GPS integrated Positioning and Orientation System (POS) that can provide EOP of the camera in a GCP free environment has not been proposed until recently. This model is chosen because of its L1 carrier phase measurements for Differential GPS (DGPS) processing, which provides sufficient positioning accuracy.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
