人民黄河
人民黃河
인민황하
Yellow River
2015年
9期
38-41
,共4页
房林东%廖卫红%王明元%宋万祯
房林東%廖衛紅%王明元%宋萬禎
방림동%료위홍%왕명원%송만정
高程%权重指数%反距离权重插值法%插值%降水量
高程%權重指數%反距離權重插值法%插值%降水量
고정%권중지수%반거리권중삽치법%삽치%강수량
elevation%weight index%inverse distance weighted interpolation method%interpolation%rainfall
在普通反距离权重插值法的基础上,采用考虑高程的反距离权重插值法,在山区和山区、平原混合地形区分别进行了雨量插值。结果表明:①在山区,考虑高程的反距离权重插值法可明显提高插值精度,且搜索半径越小,插值越精确;②在山区、平原混合地形区,普通的反距离权重插值法精度较高,但是搜索半径变小时,误差也有一定减小;③通过贵州西部地区插值结果的对比,认为权重指数α=2时结果比较理想。
在普通反距離權重插值法的基礎上,採用攷慮高程的反距離權重插值法,在山區和山區、平原混閤地形區分彆進行瞭雨量插值。結果錶明:①在山區,攷慮高程的反距離權重插值法可明顯提高插值精度,且搜索半徑越小,插值越精確;②在山區、平原混閤地形區,普通的反距離權重插值法精度較高,但是搜索半徑變小時,誤差也有一定減小;③通過貴州西部地區插值結果的對比,認為權重指數α=2時結果比較理想。
재보통반거리권중삽치법적기출상,채용고필고정적반거리권중삽치법,재산구화산구、평원혼합지형구분별진행료우량삽치。결과표명:①재산구,고필고정적반거리권중삽치법가명현제고삽치정도,차수색반경월소,삽치월정학;②재산구、평원혼합지형구,보통적반거리권중삽치법정도교고,단시수색반경변소시,오차야유일정감소;③통과귀주서부지구삽치결과적대비,인위권중지수α=2시결과비교이상。
The distinction of the inverse distance weighted interpolation considering elevation in mountainous area and mixed terrain of mountainous area and plain was analyzed. The results indicate that firstly,the inverse distance weighted interpolation considering elevation can increase the precision in mountains and the smaller search radius,the higher precision;secondly,in a mountains and plain mixed terrain,the common inverse distance weighted interpolation is better,at the same time,the deviation will be decrease with a smaller search radius;finally,with the distinction of the results in the west of Guizhou Province,it is thought to be a suitable result when the weight index is 2.