摘要
以扎龙湿地龙泡子为研究区,用实测高光谱数据和同步测量的水深数据,建立湿地湖泊的水深反演模型。通过分析水体反射率的一阶微分与水深之间的相关性来选取水深反演因子,建立了水深反演单波段模型和多波段模型,以波长832.05、839.87、809.08和774.76nm建立的多波段线性模型效果较好,相对误差为5.90%,均方根误差为10.869cm。湿地内影响因素较复杂,要深入研究水中杂质和水体底质的光谱特征才能进一步提高反演模型精度。
Longpaozi of ZhaLong marsh is taken as the test area.High spectrum and water depth data were collected,based on which water depth inversion models are established.According to the correlation coefficients between the first derivative of high-resolution reflectance and water depth,the best wavelength for inversion factor are selected to build single band model and multiband model.The best model for water depth included as predictors Band 832.05 nm,Band 839.87 nm,Band 809.08 nm,Band 774.76 nm,which has RE of 5.90% and RMSE of 10.869 cm.However,many complex factors influence the model accuracy in wetlands,so the further research will focus on spectral features of the water impurities and sediments to improve the models.
出处
《遥感技术与应用》
CSCD
北大核心
2013年第2期212-216,共5页
Remote Sensing Technology and Application
基金
吉林大学青年教师基金项目(450060445196)
国家自然科学基金项目(40801067)资助
关键词
水深
高光谱
遥感反演
扎龙湿地
Water depth
High-spectral
Remote sensing inversion
ZhaLong Marsh
