Patent · US Active

Short term cloud coverage prediction using ground-based all sky imaging

US10444406B2 · kind B2 · utility

0Cited by

0References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Shanhui Sun · Princeton, US
Jan Ernst · Plainsboro, US
Archana Sapkota · Colorado Springs, US
Eberhard Ritzhaupt-Kleissl · Baiersdorf, DE
Jeremy Ralph Wiles · San Diego, US
Terrence Chen · Princeton, US

Key dates

Filing date	Apr 17, 2014
Grant date	Oct 15, 2019
Priority date	—
Expiry date	Jan 30, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01W1/12
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for predicting short-term cloud coverage includes a computer calculating an estimated cloud velocity field at a current time value based on sky images. The computer determines a segmented cloud model based on the sky images, a future sun location corresponding to a future time value, and sun pixel locations at the future time value based on the future sun location. Next, the computer applies a back-propagation algorithm to the sun pixel locations using the estimated cloud velocity field to yield propagated sun pixel locations corresponding to a previous time value. Then, the computer predicts cloud coverage for the future sun location based on the propagated sun pixel locations and the segmented cloud model.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.