测绘通报 ›› 2019, Vol. 0 ›› Issue (5): 116-120.doi: 10.13474/j.cnki.11-2246.2019.0162

• 技术交流 • 上一篇    下一篇

衡邵干旱走廊监测中TVDI模型构建与预警

龙城仕, 王辉   

  1. 湖南省第一测绘院, 湖南 衡阳 421000
  • 收稿日期:2018-04-11 修回日期:2018-12-24 出版日期:2019-05-25 发布日期:2019-06-04
  • 作者简介:龙城仕(1975-),男,高级工程师,主要研究方向为地理国情监测与数字城市建设。E-mail:longcs@126.com

Construction and early warning of TVDI model in the condition monitoring of arid corridor in Hengyang and Shaoyang

LONG Chengshi, WANG Hui   

  1. The First Surveying and Mapping Institute of Hunan Province, Hengyang 421000, China
  • Received:2018-04-11 Revised:2018-12-24 Online:2019-05-25 Published:2019-06-04

摘要:

介绍了衡邵干旱走廊地理国情监测中监测数据的来源、MODIS产品处理与分析、地表温度(LTS)、植被指数(NDVI)的获取、数据处理方法、TVDI产品处理、TVDI制备中地表温度产品、植被指数产品订正及TVDI分级产品制备。同时介绍了TVDI模型构建及预测方法并构建了适宜的TVDI与温度、相对湿度之间的线性回归TVDI预测模型,并对干旱风险的风险概率、灾害损失进行了预警。

关键词: 衡邵干旱走廊, 地理国情监测, 温度植被干旱指数, 模型, 构建与预警

Abstract:

This paper introduces the acquisition of surface temperature (LTS), vegetation index (NDVI), data processing method and TVDI preparation in the monitoring of the conditions of arid corridors in Hengyang and Shaoyang city.Then, we use AHP to build and predict drought TVDI model, and build a suitable TVDI model and temperature, linear regression TVDI prediction model between relative humidity,and predict risk probability and disaster loss of drought risk.

Key words: dry crridor of HengYang and ShaoYang city, monitoring of geographical conditions, TVDI index, model, construction and early warning

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