基于 MODIS 时序植被指数的区域物候信息提取

2022-12-03 03:18:12   文档大全网     [ 字体: ] [ 阅读: ]

#文档大全网# 导语】以下是®文档大全网的小编为您整理的《基于 MODIS 时序植被指数的区域物候信息提取》,欢迎阅读!
物候,时序,植被,提取,基于
基于 MODIS 时序植被指数的区域物候信息提取

丁潇;王彩艳

【期刊名称】《测绘与空间地理信息 【年(),期】2015(000)010

【摘 要】利用黑龙江省201216 d 250 mMODIS NDVI数据,使用SavitskyGolay滤波法、Logistic调合函数模型和非对称Gaussian模型3种方法对曲线拟合重构,引入均方根误差比较3种方法的优劣;在曲线平滑的基础上提取物候参数,分别对森林和农用地用固定阈值和动态阈值提取其物候参数,目的在于比较两种阈值设定方法的优劣,并获取阈值使物候参数结果与作物农事历信息吻合。结果表明, SavitskyGolay滤波法在与原始曲线近似度方面优于另外两种拟合方法。%This assay is based on the sixteen-day, 250 meters MODIS NDVI dataset in the year 2012, and use three methods-the Savitsky-Golay filter, the Logistic filter and the Gaussian model-respectively to construct the NDVI time series, then use the root-mean-square error to compare the quality of the three methods.Extracting phonological parameters on the base of smoothed curves through setting different dynamical and stationary thresholds to contrast which setting method is better, and to get a appropriate thresh-old that math the seasonal calendar

accurately.The results indicate that, the Savitsky-Golay filter is better than the others in respect of the extend of approximating to the crude curves;using the stationary method to extract phonology parameters can match the season calendar more accurately than using stationary method.


【总页数】4(P85-87,91) 【作 者】丁潇;王彩艳

【作者单位】哈尔滨航天恒星数据系统科技有限公司,黑龙江哈尔滨150028;龙江地理信息工程院,黑龙江哈尔滨150081 【正文语种】 【中图分类】P208 【相关文献】

1.基于MODIS时序植被指数的植被物候空间格局 [J], 杨永民;冯兆东;龙爱华;邹松

2.基于MODIS时序植被指数和线性光谱混合模型的水稻面积提取 [J], 李根;景元;王琳;杨沈斌

3.基于MODIS植被指数的太湖蓝藻信息提取方法研究 [J], 李亚春;孙佳丽;谢志清;谢小萍

4.基于时序植被指数的华北地区作物物候期/种植制度的时空格局特征 [J], 李正国;杨鹏;周清波;王仰麟;吴文斌;张莉;张小飞

5.基于MODIS植被指数的浑善达克沙地植被物候变化 [J], 元志辉;萨楚拉;银山

因版权原因,仅展示原文概要,查看原文内容请购买


本文来源:https://www.wddqxz.cn/8863e425551252d380eb6294dd88d0d233d43c88.html

相关推荐