Lingling Ma

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Keywords: Leaf area index PROSAIL Hyperspectral Look-up table Dual-angle observations a b s t r a c t Leaf area index (LAI) is a key variable for modeling energy and mass exchange between the land surface and the atmosphere. Inversion of physically based radiative transfer models is the most established technique for estimating LAI from remotely sensed(More)
To evaluate the in-flight performance of a new hyperspectral sensor onboard an unmanned aerial vehicle (UAV-HYPER), a comprehensive field campaign was conducted over the Baotou test site in China on 3 September 2011. Several portable reference reflectance targets were deployed across the test site. The radiometric performance of the UAV-HYPER sensor was(More)
Directional gap probability or gap fraction is a basic parameter in the optical remote sensing modeling. Although some approaches have been proposed to estimate this gap probability from remotely sensed measurements, few efforts have been made to investigate the scaling effects of this parameter. This paper analyzes the scaling effect through aggregating(More)
OBJECTIVES The objective of this study was to investigate the long-term outcomes and prognostic factors for nasopharyngeal carcinoma (NPC) in Han and Uyghur patients treated with intensity-modulated radiotherapy (IMRT) in the Xinjiang region of China. MATERIALS AND METHODS One hundred twenty-one Han and 60 Uyghur patients with newly diagnosed NPC without(More)
Atmospheric correction plays an important role in the retrieval of land surface temperatures and emissivities from remotely sensed thermal infrared images. Under the condition of multispectral imaging, atmospheric effects are usually estimated by means of external synchronously observed data which comes from other sensors or platforms. However, when imaging(More)
Radiometric cross-calibration of Earth observation sensors is an effective approach to evaluate instrument calibration performance, identify and diagnose calibration anomalies, and quantify the consistency of measurements from different sensors. In this study a novel cross-calibration method is proposed, taking into account the spectral and viewing angle(More)
The following information is missing from the Funding section: " The authors received internal funding for this project from the China Aerospace Science and Technology Corporation The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. " The authors have also provided an updated Competing(More)