Because of the influences of economical construction development and natural factors, the change of land use condition and crop distribution has been taking place every year, including the decrement of cultivated land, the adjustment of crop distribution and the increment of building-used land. In order to capture the dynamic change of land use and crop distribution Promptly, at the request of National Agricultural Zoning Committee, we made a study test for dynamic monitoring in Beijing area, using TM imagery integra- ted with the color infrared aerial photo and maps. When the precise geometric rectification of TM imagery was made with the ground control points selected from topographic map in scale of 1:100000, the accuracy of half a pixel is high. In the comparison analysis between the multi-factor auto-classification on microcomputer and visual interpretation, both qualitative accuracy can reach to 94 percent. The multispectral information of TM imagery is abundant, both its positioning and qualitative accuracy are relatively high, so it it suitable for the dynamic monitoring of land use and crop distribution, and will has shot period and high efficiency.
This paper introduces near-infrared spectra (0. 7─2.5 μm) of some petroleum matter by the comprehensive measurement in terms of spectral informa- tion feature obtained by remote sensing for oil and gas resources. The spectral characteristics and choosing optimum wave bands applied to remote sensing for oil and gas resources is discussed.
The response of vegetation to geochemical anomaly can be form a remote sensing information for exploration The sensitivity of plants to the anomalous abundance of many kinds of metals in Northern Xinjiang Aertai area are analysed in this paper. By ground truth study and interpretation on MSS image of 3 knowing mineral ranges, 3 ranges with anoumalous vegetation in the study area are delimited, which duplicate the known geochemical intense anomalous regions.
This paper is composed of three parts. Firstly, the show features from landsat images of the several ring-like structures formed by magma intrusi- vism on the Yangzi River in Anhui are described. Secondly, combining remote sensing with other informations, the existance of the intrusive batholiths are discussed from geophysical and geochemical prospecting anomalies, drilling informations, and the surface geology, oveszation and altered wallrocks and so on. Finally, it is discussed to form the process of the ring-like structures in simple.
The Darabut fault appeared in the northeast strike across the West Jungger area is regarded as a big multiphase fault with a length of 480 kilometers through the interpretation of satellite digital image and the study of geological character. The Darabut fault does not control the strata of the lower Carboniferous and Precarboniferous Series, only leftlateral breaks can be seen; It obviously controls the strata of the middle Carboniferous and the lower-middle Jurassic ones ; Ultramafite in the Darabut ultrabasic rock is affected by the nappe tectonic, and then it locates in the up side of the Darabut fault. The formation and development of this system resulted from the continuous face-to-face movement of the Talim, Sibelian and Kazakhstanian continental segments after their collision and the early Carboniferous Epoch. As a type of the stress relief form, at the early stage (Triassic period, early and middle Jurassic Epoch) the system was turned into the plough-shaped faults by the strong nappe structure under the continental diving. At the late stage, it was in the state of extention, thus showing that the hanging wall went down. So the clear fault geomorphologic expression has been formed at pre-sent.
Digital mosaic technology is a common method used in digital image processing, but it is not good enough in SAR image inlay because the(geometric and radiation) distortion of SAR images is related to the direction and distance of radar beam. When the neighbouring image strips were inlaid, the obvious difference between them in tone and geometric position appeared. In this paper it will be found that the problem in digital mosaic of SAR images was solved. The mathematic theory of SAR image radiation correction and geometric correction was discussed in detail, and the effectiveness of the correction methods was approved by examples. The mosaic images with uniform tone and accurate position can be obtained after the suitable radiation correction and geometric correction for SAR images.