| 邹勇1，陈宏容2，叶晓青1，余志虹3，陈雨峰1，王维4，陈建军4.不同时空状态下烤烟冠层光谱数据稳定性研究[J].广东农业科学,2014,41(12):16-20 |
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不同时空状态下烤烟冠层光谱数据稳定性研究 |
| Research on spectral data consistency of flue-cured tobaccocanopy under different spatial and temporal condition |
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| DOI： |
| 中文关键词: 烤烟 冠层光谱 时空条件 光谱反射率 |
| 英文关键词: flue-cured tobacco canopy spectrum space-time condition spectral reflectance |
| 基金项目:国家烟草专卖局重大科技项目（110200902043）；
广东省烟草专卖局（公司）项目（201101，201001，200820）；中国
烟草实业发展中心科技项目（ZYSY201315 |
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| 摘要点击次数: 1810 |
| 全文下载次数: 689 |
| 中文摘要: |
| 为明确烤烟光谱测定的最佳时空条件，以烤烟品种K326 为材料，通过采集田间不同测定时间及探头高
度下烤烟冠层光谱反射率并就其变异系数进行分析。结果表明院10颐00~12颐00 时烤烟冠层光谱的变异系数均小于其他
时段，稳定性较高；不同探头高度烤烟冠层反射光谱的变异系数在可见光（460~710 nm）波段表现为院探头高度1.0 m
与1.5 m所测定的光谱数据稳定性差异不大，但都明显好于探头高度0.5 m所测光谱数据稳定性；近红外（760~1 650
nm）波段探头高度为1.5 m时所测量的光谱数据最稳定，其次是探头高度为1.0 m时所测量的光谱数据，探头高度为
0.5 m光谱数据变异系数最大，稳定性最差。因此，烤烟光谱测定最佳时空条件为探头高度1.5 m、测定时间10:00~12:
00。 |
| 英文摘要: |
| In order to determine the optimal spatial and temporal conditions for flue-cured tobacco spectral measuring,
the data of canopy spectral reflectance and coefficient of variation in different spatial and temporal scales were analyzed
using K326 as test material. The results showed that the canopy spectral reflectance variation coefficient during the time
10:00 -12:00 was the lowest and the data consistency reached a fairly high level; the differences of canopy spectral
reflectance consistency between probe height 1.0 m and 1.5 m in the visible band (460-710nm) were not-significant, but
their data consistency were significantly better than the those with probe height 0.5m; the spectral data consistency of probe
height 1.5 m were the best in near infrared band (760-1 650 nm), followed by the spectral data of probe height 1.0 m, the
spectral variation coefficient of probe height 0.5m was the highest and the data consistency was the worst. All the analysis
shows that, probe height 1.5 m and the measuring time during 10:00-12:00 was the optimal spatial and temporal conditions
for flue-cured tobacco spectral measuring. |
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