Applicationof UAV Photogrammetry in Digital City Geographic Information Navigation andPositioning

Caixu Xu1, Caichun Cen2*, Jie He2

1School ofElectronics and Information Engineering, Wuzhou University, Wuzhou, 543002,China

2Guangxi Colleges and Universities Key Laboratory of ImageProcessing and Intelligent Information System, WuzhouUniversity, Wuzhou, 543002, China

Abstract: In order to solve the problem of asynchronous measurementdata in UAV passive target location and tracking, the time correction algorithmof multi UAV airborne sensors is studied. This paper describes the basicprinciple and application scope of time correction, analyzes the time factorsaffecting the positioning accuracy of multi UAV passive target positioning andtracking system, and proposes a time drift correction algorithm based oninterpolation idea, which realizes the time registration of multi UAVobservation data and reduces the positioning error caused by timesynchronization.

Keywords: UAV; Photogrammetry; Digitalcity; Geographic information; Navigation and positioning