A Low Power Software Defined Radio Networked Architecture for Digital Camera Image Geotagging
نویسندگان
چکیده
In this paper, we present the design of a Software Defined Radio (SDR) architecture that is used for geotagging camera images. In this architecture, only the radio frequency (RF) front-end of the SDR is installed on the camera to reduce the power required for collecting Global Positioning System (GPS) geolocation data. A brief snapshot of the GPS signals is collected when a picture is taken and is later uploaded to a central server for processing by an SDR when the camera connects to a network for uploading its digital images. This paper covers the design of this low power digital image geotagging system architecture and the SDR used to perform the Global Navigation Satellite Systems (GNSS) processing. GNSS tracking results are also included showing operation in different environments, including under tree canopy and in urban environments. Test results are presented demonstrating the performance of this geotagging solution compared with conventional GPS chip set approaches.
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