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Remote Sens. 2015, 7(10), 14259-14275; doi:10.3390/rs71014259

An Unmanned Airship Thermal Infrared Remote Sensing System for Low-Altitude and High Spatial Resolution Monitoring of Urban Thermal Environments: Integration and an Experiment

1
State Key Laboratory of Subtropical Building Science, Department of Architecture, South China University of Technology, Guangzhou 510640, China
2
Guangzhou Design Institute, Guangzhou 510620, China
*
Author to whom correspondence should be addressed.
Academic Editors: Benjamin Bechtel, Iphigenia Keramitsoglou, Simone Kotthaus, James A. Voogt, Klemen Zakšek, Parth Sarathi Roy and Prasad S. Thenkabail
Received: 9 August 2015 / Revised: 12 October 2015 / Accepted: 12 October 2015 / Published: 27 October 2015
View Full-Text   |   Download PDF [1219 KB, uploaded 27 October 2015]   |  

Abstract

Satellite remote sensing data that lacks spatial resolution and timeliness is of limited ability to access urban thermal environment on a micro scale. This paper presents an unmanned airship low-altitude thermal infrared remote sensing system (UALTIRSS), which is composed of an unmanned airship, an onboard control and navigation subsystem, a task subsystem, a communication subsystem, and a ground-base station. Furthermore, an experimental method and an airborne-field experiment for collecting land surface temperature (LST) were designed and conducted. The LST pattern within 0.8-m spatial resolution and with root mean square error (RMSE) value of 2.63 °C was achieved and analyzed in the study region. Finally, the effects of surface types on the surrounding thermal environment were analyzed by LST profiles. Results show that the high thermal resolution imagery obtained from UALTIRSS can provide more detailed thermal information, which are conducive to classify fine urban material and assess surface urban heat island (SUHI). There is a significant positive correlation between the average LST of profiles and the percent impervious surface area (ISA%) with R2 around 0.917. Overall, UALTIRSS and the retrieval method were proved to be low-cost and feasible for studying micro urban thermal environments. View Full-Text
Keywords: low-altitude; thermal infrared remote sensing system; high spatial resolution; land surface temperature (LST); urban thermal environment low-altitude; thermal infrared remote sensing system; high spatial resolution; land surface temperature (LST); urban thermal environment
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ren, P.; Meng, Q.; Zhang, Y.; Zhao, L.; Yuan, X.; Feng, X. An Unmanned Airship Thermal Infrared Remote Sensing System for Low-Altitude and High Spatial Resolution Monitoring of Urban Thermal Environments: Integration and an Experiment. Remote Sens. 2015, 7, 14259-14275.

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