Abstract

Abstract. Ground surveys and remote sensing are integral to establishing fair and equitable property valuations necessary for real property taxation. The International Association of Assessing Officers (IAAO) has embraced aerial and street-view imaging as part of its standards related to property tax assessments and audits. New technologies, including unmanned aerial systems (UAS) paired with imaging sensors, will become more common as local governments work to ensure their cadastre and tax rolls are both accurate and complete. Trends in mapping technology have seen an evolution in platforms from large, expensive manned aircraft to very small, inexpensive UAS. Traditional methods of photogrammetry have also given way to new equipment and sensors: digital cameras, infrared imagers, light detection and ranging (LiDAR) laser scanners, and now synthetic aperture radar (SAR). At the University of Alaska Fairbanks (UAF), we work extensively with unmanned aerial systems equipped with each of these newer sensors. UAF has significant experience flying unmanned systems in the US National Airspace, having begun in 1969 with scientific rockets and expanded to unmanned aircraft in 2003. Ongoing field experience allows UAF to partner effectively with outside organizations to test and develop leading-edge research in UAS and remote sensing. This presentation will discuss our research related to various sensors and payloads for mapping. We will also share our experience with UAS and optical systems for creating some of the first cadastral surveys in rural Alaska.

Highlights

  • Operating under a cooperative agreement with the National Aeronautics and Space Administration (NASA), Poker Flat has conducted more than 300 sounding rocket missions and 1,500 high-altitude atmospheric rocket experiments

  • Rocket recovery must be coordinated with a multitude of federal and state agencies, as well as village governments in rural Alaska that own and administer lands located within the rocket range

  • With the intent to further reduce mapping costs in remote areas of Alaska, Tanana Chiefs Conference (TCC) began in 2010 to test new photogrammetry applications capable of automatic tie-point generation. Part of this assessment included an understanding of the accuracy of automatically generating tie points and the placement of ground-control targets (GCT)

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Summary

UNIQUE MAPPING OPPORTUNITY

The careful management of airspace during launch and the down-range recovery is critical to Poker Flat’s reputation for safe operation This legacy of safe-airspace operation allows Poker Flat to be one of the few civilian organizations and facilities in which a variety of unmanned aerial systems (UAS) and payloads can be tested. Poker Flat flies UAS equipped with specialized experimental payloads, including atmospheric samplers to collect ash and aerosols found in the plumes of volcanic eruptions and in the smoke of Alaskan forest wildfires. These systems have been tested over sea and land on behalf of oil companies, fisheries, military contractors, and federal.

CADASTRAL MAPPING IN ALASKA
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