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Soil Moisture Content (SMC) plays an important role in different environmental studies. In this study, to assess SMC, a method based on reflectance values in red and NIR bands from HJ-1B is introduced. This model divides SNIR-R into three separate regions based on the pixels NDVI values and fits three different regression equations to each region. All the achieved results showed that as NDVI values...
UAV image registration is a key in the process of UAV image matching and application. Based on a large number of images, overlapping irregular and lack of ground control point, paper put forward the image registration algorithm based on overlapping area detection. Firstly the algorithm uses the improved distributed search method based on phase correlation method to search overlapping area and get...
UAVRS (unmanned aerial vehicles remote sensing) is widely used in various fields such as resource exploration, disaster monitoring. The paper designed a geometric distortion correction algorithm of UAV low altitude remote sensing image for emergency disaster, which mainly consisted of the following steps: eliminating rotational error, extracting the control points effectively and correcting geometric...
Traditional DINSAR method is just available to obtain the deformation of no layover areas. While, for some line-shape objects located vertically over the ground, such as power transmission tower, traditional DINSAR technique can not be used to obtain the inclination displacement of it. This paper proposes an improved DINSAR (IM-DINSAR) method which can solve this problem by removing the top-down vertical...
Persistent scatterers synthetic aperture radar interferometry (PSI) is a powerful remote sensing technique to detect the subsidence and landslides with an accuracy of millimeters. Distributed scatterers (DS) can be extracted to increase the measurement points with preserved Persistent scatterers (PSs), especially in non-urban areas covered with vegetation. In the experiment, we selected a set of SAR...
The paper studied the model relation of soil moisture and spectral index by using the data field measured spectral reflectance and soil moisture, and analyzed the correlation between the soil moisture and spectral index. Furthermore, based on analyzing the data measured, the research selected the sensitive band and built the optimal inversion model. The soil moisture of the studied area (Maoergai...
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