Real-Time Terrain Correction of Satellite Imagery-Based Solar Irradiance Maps
Playlist
  • solar radiation
  • solar irradiance
  • terrain
  • shadowing
  • shading
  • high-resolution
Video Introduction

This video is adapted from 10.3390/rs15163965

Satellite imagery-based solar irradiance mapping studies are essential for large-scale solar energy assessments but are limited in spatial resolution and accuracy. Despite efforts to increase map resolution by correcting inaccuracies caused by shadows on the terrain, the computational time of these models and the massive volume of generated data still pose challenges. Particularly, forecasting generates large amounts of time series data, and the data production rate is faster than the computational speed of traditional terrain correction. Moreover, while previous research has been conducted to expedite computations, a novel and innovative technology in terrain correction is still required. Therefore, the authors propose a new correction method that can bypass complex calculations and process enormous data within seconds. This model extends the lookup table concept, optimizes the results of many shadow operations, and stores them in memory for use. The model enabled 90 m scale computations across Korea within seconds on a local desktop computer. Optimization was performed based on domain knowledge to reduce the required memory to a realistic level. A quantitative analysis of computation time was also conducted, revealing a previously overlooked computational bottleneck. In conclusion, the developed model enables real-time terrain correction and subsequent processing of massive amounts of data.

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Oh, M.; Oh, M.; Kim, C.K.; Kim, B.; Kang, Y.; Kim, H. Real-Time Terrain Correction of Satellite Imagery-Based Solar Irradiance Maps. Encyclopedia. Available online: https://encyclopedia.pub/video/video_detail/1287 (accessed on 06 December 2024).
Oh M, Oh M, Kim CK, Kim B, Kang Y, Kim H. Real-Time Terrain Correction of Satellite Imagery-Based Solar Irradiance Maps. Encyclopedia. Available at: https://encyclopedia.pub/video/video_detail/1287. Accessed December 06, 2024.
Oh, Myeongchan, Myeongchan Oh, Chang Ki Kim, Boyoung Kim, Yongheack Kang, Hyun-Goo Kim. "Real-Time Terrain Correction of Satellite Imagery-Based Solar Irradiance Maps" Encyclopedia, https://encyclopedia.pub/video/video_detail/1287 (accessed December 06, 2024).
Oh, M., Oh, M., Kim, C.K., Kim, B., Kang, Y., & Kim, H. (2024, June 13). Real-Time Terrain Correction of Satellite Imagery-Based Solar Irradiance Maps. In Encyclopedia. https://encyclopedia.pub/video/video_detail/1287
Oh, Myeongchan, et al. "Real-Time Terrain Correction of Satellite Imagery-Based Solar Irradiance Maps." Encyclopedia. Web. 13 June, 2024.
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