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浏览/检索结果: 共3条，第1-3条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序作者升序作者降序提交时间升序提交时间降序题名升序题名降序 Development of a system of compatible individual tree diameter and aboveground biomass prediction models using error-in-variable regression and airborne LiDAR data 期刊论文 Remote Sensing, 2018, 卷号: 10, 期号: 2 作者:  Fu, Liyong;  Liu, Qingwang;  Sun, Hua;  Wang, Qiuyan;  Li, Zengyuan 收藏  |  浏览/下载：4/0  |  提交时间：2019/12/28 airborne LiDAR  diameter at breast height  aboveground biomass  error-in-variable models  leave-one-out cross-validation   Comparison of seemingly unrelated regressions with error-in-variable models for developing a system of nonlinear additive biomass equations 期刊论文 Trees - Structure and Function, 2016, 卷号: 30, 期号: 3, 页码: 839-857 作者:  Fu, Liyong;  Lei, Yuancai*;  Wang, Guangxing;  Bi, Huiquan;  Tang, Shouzheng 收藏  |  浏览/下载：2/0  |  提交时间：2019/12/28 Additivity  Nonlinear error-in-variable models  Nonlinear seemingly unrelated regression  Pinus massoniana Lamb  Tree biomass   Design of a scene simulator in land-based aerospace lab with the man-made light source system based on quantum theory (EI CONFERENCE) 会议论文 Optoelectronic Devices and Integration II, November 12, 2007 - November 15, 2007, Beijing, China Zhu X.; Yi W.; Fang W.; Yi H. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 The paper presents a method with the technique of combination filtering of spectrum and the technique of DSP control for the simulation and recognition of the spontaneously lightening object and stellar map in the universe. The magnitude and the spectrum of a star can be simulated in a wide dynamic range. We established the mathematical models of the Vega's visible light spectrum and luminous flux density. Tungsten-halogen lamp as a light source is used to fit the linear light of the spontaneously lightening object in the universe. Through the experiment  it shows that the more sub-channels there are while filtering spectrum in the visible spectrum  and the more degrees the variable neutral density filters and the narrow-band attenuators have  more close to the actual spectrum the simulated spectrum is. It is proved that using the PID technique is beneficial to the output of the accurate and steady radiation from the light sources. The experiment shows that the using of this method can get perfect result in fitting and simulating the spectrum  magnitude and the stellar map of the spontaneously lightening object . The analysis of the consistent result and the experimental error is also discussed in detail in this paper.